Weather in Cancun in September + Events and Things to Do

Considering a vacation to Cancun in September, but unsure if it’s the perfect time to visit? You’ve come to the right place!

The city of Cancun is one the most popular destination in Mexico, and one of the most well-known vacation spots in the entire world. From golden-white beaches, sparkling turquoise waters, and culture brimming with Mayan history, there are endless things to do, see, (and eat, of course).

There’s really no bad time to visit this slice of paradise on the Yucatan Peninsula, but there are a few things you should know before you go to Cancun in September.

In this blog post, you’ll learn everything you need to know when it comes to Cancun travel. From weather patterns and the hurricane season to top cafes and restaurants and seasonal activities you can’t miss, you’ll be ready to pack your bags.

Keep reading below to find out more about why you should visit Cancun in September:

Cancun playa chaacmol people

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Weather in Cancun In September – At a Glance

September in Cancun is considered the low season, which means lower prices and fewer people than in the peak season. But there is a reason. Let’s find out.

The weather in Cancun in September is generally hot and humid. Humidity rarely falls below 60 percent even at night, which is why it will feel hotter than it actually is. Make sure you book hotel rooms and lodging with reliable air-conditioning to be the most comfortable.

It’s also no secret that September through November brings the height of the Atlantic hurricane season.

Although this is technically true for most islands in the hurricane zone, it’s not entirely true for Cancun itself. The possibility and potential threat of a hurricane making landfall are always present, but the likelihood of it happening in Cancun is very low.

If one does show up, it will usually occur at the end of August or throughout September. Even then, it’s been nearly two decades since a hurricane made landfall in Cancun, so you can plan your vacation with peace of mind.

One thing you must be prepared to experience is rain which can turn into a tropical storm sometimes. September is one of the rainiest months of the year, bringing more than 10 days of rain on average.

Though these showers often last no more than a few hours at a time, they can be disruptive. It’s best to have alternate indoor plans in case a storm or extreme heat interrupt outdoor plans.

Weather in Cancun in September temperature
Photo © Wheatherspark

Cancun Weather by Month


What’s the average temperature in Cancun in September?

Even with the extreme heat and humidity, temperatures don’t fluctuate much in September. The average high temperature during the day hovers around 90 degrees. At night, the average low temperature sits around 86 degrees, rarely falling below 80 degrees.

A lack of wind in addition to the humidity makes most days feel muggy and sticky. You may find some wind closer to the coastline during dusk or early evening, but this usually doesn’t occur until later in September.

If you are sensitive to heat or humidity, especially due to a health condition, it’s necessary to book a hotel room with air-conditioning. Conversely, hotels and resorts usually have the best deals of the season during September due to the heat and hurricane season.

Wheather in Cancun in September: rain
Photo © Wheatherspark

Does it rain in Cancun in September?

Yes. September is the rainiest month of the year for Cancun. Total rainfall can surpass 11 inches or 91mm over 12-21 days of rain throughout the month.

Rainfall typically comes in spurts that last no more than 2 to 3 hours. This rainfall can come in steady flows or give way to periods of more intensity. It shouldn’t be an excessive problem, but be ready to reschedule or cancel outdoor plans if necessary.

In spite of all of the rain, you should still enjoy plenty of warm and sunny days if you visit Cancun in September.

Does it rain all day in Cancun in September?

September falls in the rainy season, but it rarely rains all day in Cancun, even during the rainiest month of the year! Unless a hurricane makes landfall, or a rare storm develops off the coast, it is very unlikely you will experience an entire day of non-stop rain in September.

Cancun sees between 12 and 21 days of total rainfall during this month.

Average monthly rainfall in Cancun in September
Photo © Wheatherspark

Best things to do in Cancun when it rains 

During the month of September, it’s not uncommon for days to be interrupted by bursts of showers or rainfall. They don’t last long, but can certainly put a dent in your outdoor plans. Here are some ways to spend a day indoors if the weather isn’t cooperating:

1. Check out some of the Cancun Museums

Although Cancun isn’t exactly known for the museums there are a few interesting ones that can make your day in rainy weather. The most interesting one is the Museo Maya in the Hotel Zone.

2. See a Cirque du Soleil show

Join the most successful entertainment company in the world for dinner and an acrobatics show in the jungle. The show, JOYÁ, depicts the heritage and history of Mexico through music, acrobatics, dance, and theater. ► GET YOUR TICKETS HERE

3. Take a Mexican cooking class

There are several cooking classes offered in Cancun that you can join and learn the secrets of delicious Mexican cuisine. ► BOOK HERE THE TOP-RATED TOUR

Is it hot in Cancun in September?

Cancun in September is very hot and muggy. The average temperature fluctuates but usually hovers around 84 degrees during the day. The daily high temperature can reach as much as 91 degrees or more.

At night after the sun drops, it rarely gets below 80 degrees, and the lowest recorded temperature in September has been 77 degrees.

These temperatures may not seem like much, but pair them with 60 percent humidity (sometimes even 100 percent) and the “real feel” temperature can seem closer to 100 degrees.

Is it very humid in Cancun in September?

The short answer is: absolutely! September is one of the most humid months for Cancun. On average, expect to experience humidity between 70 and 90 percent. It can even reach 98 to 100 percent humidity if the conditions are right.

If you have asthma or another health condition or are very sensitive to heat, it may be best to balance outdoor activities with indoor ones. Definitely book a hotel room that has good air filtration and air conditioning.

Humidity in Cancun in September
Photo © Wheatherspark

Are there hurricanes in Cancun in September?

The period of September through November is the height of the Atlantic Hurricane season.

This may seem intimidating, and for some destinations in the Caribbean, it’s a real threat. However, the threat of a dangerous hurricane making landfall in the Yucatan Peninsula is very slim. Demographically, it’s part of the Caribbean, but it’s far enough away from the sea and protected by the peninsula that it’s missed by most hurricanes.

In the rare event that one does make landfall in Cancun, it’s usually been downgraded to a tropical storm or just an intense rain shower.

But that doesn’t mean that the possibility of a hurricane is 0, it still can happen. So make sure you check the forecast before leaving your country.

When is Hurricane Season in Cancun?

Hurricane season in Cancun runs from June 1 to November 30. During late September and October, hurricane patterns tend to head westward. This means that the likelihood of a hurricane reaching Cancun is greater, but only slightly.

Hurricanes almost never strike by surprise. Developments are almost always detected by meteorologists well ahead of time, so in the unlikely event you have to evacuate or cancel travel plans, you’ll have time.

For additional security and peace of mind, you can also take out an affordable travel insurance plan that will cover most if not all trip interruptions or cancellations.

If you ask me I have two recommended travel insurance companies, one is SafetyWing, which I find relatively affordable and quite comprehensive.

The other is not a company but a site aggregator, Travel Insurance Master which will help you find the perfect insurance for you. You fill out the form with the information about your profile and requirements and they select the insurance company that is a good fit.

Get a free insurance quote:

Is Cancun safe during hurricane season?

Visiting Cancun is safe any time of the year, even during hurricane season! While you may experience an increase in rainfall, flooding rarely occurs. The only minor discomfort you may experience is having to cancel any outdoor activities due to a rain shower!

In the unlikely event of a hurricane, you will have plenty of advance notice as meteorologists track the storm (sometimes a week ahead of landfall). If you’re in Cancun when a storm makes landfall, many hotels and resorts have newly built shelters to house tourists safely.

Cancun sunset on the beach
Cancun Sunset from Puerto Cancun

Sea water temperature in Cancun in September

The weather is always warm in Cancun, which means the temperature of the sea is too!

The average sea temperature reaches 85 degrees, rarely surpassing 87 degrees. The outside temperature during September is also very hot and humid, making water activities even more enjoyable.

No matter what month you visit Cancun, you will be able to swim, snorkel, or scuba dive comfortably in fresh or saltwater.

The only thing to watch out for in the ocean during certain months is seaweed (which you will learn more about below).

How warm is the water in Cancun in September?

The average water temperature in Cancun in September is 85 degrees. This is bathtub warm when it comes to ocean temperatures.

Surprisingly, the water temperature increases during the fall months when comparing it to the summer months. This is due to ocean currents and the intense heat and humidity of the outside air temperature.

Sea visibility in Cancun in September

The sea visibility in Cancun is usually between 50 to 100 feet in the ocean, and up to 300 feet in freshwater cenotes. The average total daylight in September is nearly 13 hours, with close to 10 hours of sunshine per day.

Cloud cover, which can impact sea visibility, is usually around 29 percent throughout the month of September compared to 40 percent in January.

Cancun beach on a sunday
Playa Chacmol on a Sunday

Sargassum Seaweed In Cancun in September

You are probably wondering what Sargassum seaweed is in the first place, and that’s normal.

A species of brown algae from the Sargasso Sea, floats along the surface of the ocean. After it loses its buoyancy, it washes ashore and dies. The seaweed season in Cancun usually begins in May and lasts through October.

While September isn’t the height of this season, you may still witness some floating in the water and on the beaches.

This may not seem like a big deal, but there are many issues that sargassum poses to both humans and the environment.

While some marine life uses it as food, the seaweed also sucks up oxygen that many fish and marine organisms need to survive.

Threats to humans are mild but still exist in potentially dangerous bacteria and poisonous gas released during decomposition. It’s best to avoid the seaweed while swimming or snorkeling if possible.

In the above-linked post, I am explaining more about the sargassum in Cancun and how to avoid it.

Sargasso Season in Cancun
Sargasso in Cancun – Photo from Canva

Events in Cancun in September

🇲🇽 Mexican Independence Day

At midnight on September 16th, Mexico celebrates its most important holiday: Mexican Independence Day.

Taking place on both September 15th and 16th, the celebrations commemorate the day that Catholic priest Miguel Hidalgo rang a bell to declare independence from Spain in the town of Dolores. An 11-year war between Mexico and Spain ensued but brought a Spanish reign of 300 years to an end.

Today, towns and cities all over Mexico become vibrant places of celebration. It’s the perfect time to enjoy plenty of parties, fireworks, street fairs, and re-enactments.

Eat food like fresh guacamole, tacos, tamales, and the official El Grito de la Independencia dish of poblano peppers and walnut sauce, called Chile en Nogada.

🍁 Autumn Equinox Festival

At the iconic UNESCO Heritage site of Chichen-Itza, you can experience the incredible celebration of The Autumn Equinox festival phenomenon.

Taking place every year around September 22, thousands of visitors descend on the Mayan ruins at the El Castillo pyramid. What happens is an astronomical phenomenon!

The late afternoon sun moves over the equator to reveal the “snake of sunlight” serpent god Kukulkan, moving slowly down the steps of the pyramid. Many believe this is a symbol of the feathered serpent joining the underworld, heavens, and earth all at once.

Keep in mind that September is the rainiest and most cloudy month of the year. It’s smart to check the forecast in advance of your trip to ensure conditions are prime for viewing the shadow.

Pro tip: You may have the opportunity to view the shadow of Kulkulkan two days before the actual Autumn Equinox on September 20.Salsa-Casino Mayan Congress

Chichen Itza Castillo at sunrise

Pros of Visiting Cancun in September

The biggest perks of visiting Cancun in September are the hotel and resort prices!

September marks the low tourist season in Cancun, so this means many properties will have great deals on all-inclusive packages. Often, these prices will be the lowest of the entire year.

Additionally, the arrival of the hurricane season typically means the arrival of even fewer tourists than in shoulder season. So, you can take advantage of these great prices without virtually any crowds.

If you’re a nature buff, September is the migratory season for numerous bird species seeking warmer climates. There are also fewer insects during this time of year due to hibernation.

So birdwatchers and nature lovers will have a great time in September in Cancun and surroundings.

If you’re looking for a true tropical getaway — humidity and all — September is also a prime time to visit Cancun. Temperatures are at their hottest which increases the ocean temperature to a toasty 85 degrees.

Cons of Visiting Cancun in September

👎🏼 One word: rain. September brings plenty of sunshine to Cancun, but you can’t get a rainbow without a little rain (and clouds).

Even though it rarely rains all day, bursts of showers may interrupt outdoor activities or tours. This doesn’t mean you still won’t have an unforgettable vacation, it just means you may have to be flexible in switching up your schedule.

Depending on your preference for and sensitivity to heat, the humidity and average daily temperatures could also be a deterrent.

The Yucatan Peninsula has so much natural beauty that spending time outside is necessary. Oppositely, know your limits and recognize when it’s time to head to the air conditioning.

Since it’s the shoulder season and less crowded, some hotels and resorts may also be undergoing routine maintenance. Check with property management prior to securing lodging to avoid any interruptions.

👎🏼 Also with rains come mosquitos, in my opinion, the most annoying bugs on the planet and among the most popular animals you can find in Cancun.

Keep mosquitos away!

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Things to Do in Cancun in September

➡️ Spend time on the beach

Visiting Cancun in September means you can easily and comfortably spend an entire day at the beach. Due to the height of the hurricane season, the crowds really thin out, and the water temperature rises by a couple of degrees.

There’s no shortage of world-class beaches in Cancun. In fact, although Cancun beach is basically one long stretch of endless white sand only interrupted a few times, some of the beaches have a name and some are also more swimmable than others.

On the North Side of Cancun, the beaches provide more privacy with fewer crowds and calmer water. Beaches that locals and visitors like to frequent on this side include Playa Caracol, Playa Las Perlas, Playa Tortugas, and Playa Langosta.

Isla Mujeres is another popular beach destination just off the coast. Here, you can find the beautiful beach of Playa Norte featuring dozens of beachfront restaurants and hotels.

On many beaches, you can rent lounge chairs and umbrellas, enjoy delicious cuisine at nearby restaurants, or simply relax.

Playa Delfines turqouise water
Playa Delfines Cancun

➡️ Visit Chichen Itza

Known as one of the “New 7 Wonders of the World” since 2000, Chichen Itza is home to numerous ancient Mayan marvels and man-made wonders. For these reasons alone, it’s a must to witness Chichen Itza with your own eyes while visiting Cancun.

Just 120 miles from Cancun, it’s the most popular site in the Yucatan Peninsula, and one of the most important cultural sites in all of Mexico.

You can choose to visit the site on your own if you want to have a more flexible schedule, or you can book a private or small group tour with one of the area’s many professional tour companies.

In September, temperatures begin to fall slightly providing some relief from the summer heat. Oppositely, rainfall begins to increase and can be unexpected, so bring an umbrella, sunscreen, and comfortable waterproof shoes for exploring.

Chichen Itza columns

➡️ Go on a day trip to Tulum 

You can’t visit Cancun and not make the short drive to the beachside town of Tulum.

Aside from stunning beaches, Tulum has a lush jungle, Mayan ruins, picturesque lagoons and cenotes, and upscale nightlife.

With only a 2-hour direct drive down the Mexican Federal Highway, you can enjoy Tulum for a half or full day via a self-guided tour or with a professional guide.

One of the most popular places to visit is the Tulum Ruins and Archeological Site. It’s a former pre-Columbian Mayan walled city along 12 miles of breathtaking coastline.

The second most popular sight is El Gran Cenote or “Big Cenote”. This is the most popular of all of the limestone caverns due to its close proximity to Tulum and hypnotizing crystal-clear water.

Tulum is also known for a number of beautiful nearby beaches including Akumal Beach, Playa Paraíso, and Tulum Beach.

After soaking up some sun, sip on a cocktail or grab an appetizer at one of the many popular bars including Habitas or Nômade (a boho-style hotel with a beachfront bar).

There are different ways to get to Tulum from Cancun. I would suggest renting a car so you have the freedom to move around at your convenience.

Additionally, you can join an organized tour or go to Tulum by public bus. It takes longer but it’s doable.

tulum archeological site classic
Tulum archeological site

➡️ Try some of the great restaurants

If you’re a food connoisseur, Cancun is the place for you. With no shortage of world-class restaurants, cafes, bars, and food trucks you can find just about any type of cuisine you want within the city.

Authentic Mexican cuisine, top-rated steakhouses, locally caught seafood, and the freshest fruit and vegetables are all for the taking.

The month of September is prime time to enjoy beachfront dining. When it’s not raining, the breeze off the water is delightfully refreshing. Some local favorites include  Lorenzillo’s (one of Cancun’s oldest restaurants), and Thai (the most unique restaurant in all of Cancun).

➡️ Go snorkeling 

September is a key month to enjoy water activities around Cancun. From the Great Mayan Reef to the array of freshwater cenotes nearby, it’s an ideal time to jump in and explore the vast underwater ecosystems.

In September, it’s important to know that humidity is often above 60 percent both at night and during the day, on top of hot average temps. It will be smart to take refuge in the water (especially of a cool cenote) to beat the heat.

If you prefer to snorkel or dive in a more unique and controlled environment, head to the Underwater Museum: MUSA. It contains nearly 500 underwater sculptures and an array of sea life in waters that are 10 to 20 feet deep.

Snorkeling alone off many beaches in Cancun is perfectly safe, but it’s better to book a professional tour since they know all the best spots!

cozumel snorkeling group blue water

Best Tours in Cancun in September

👉 Chichen Itza tour

⭐️⭐️⭐️⭐️⭐️ 10357 Reviews

This full-day tour will take you to the architectural wonder of Chichen Itza first (admission not included) at the pyramid of Kukulcan.  Your second stop will be the colorful city of Valladolid. Finally, you’ll swim in the crystal clear waters of the Saamal cenote before savoring a delicious buffet meal at the end of the tour. ► BOOK IT HERE

👉 Tulum combo tour

⭐️⭐️⭐️⭐️⭐️ 2652 Reviews

On this full-day tour to Tulum from Cancun or Playa del Carmen, you will visit a popular coral reef, explore the grounds of the Tulum archeological site, and swim in a nearby cenote. Before heading back to your hotel, you’ll trek through the jungle to a limestone cave. This tour includes entrance fees, a buffet lunch, and transportation. ► BOOK IT HERE

👉 Isla Mujeres Sailing tour

⭐️⭐️⭐️⭐️⭐️ 1936 Reviews

Enjoy a catamaran sail from Cancun to nearby Islas Mujeres to snorkel, eat a gourmet lunch, and drink plenty of complimentary beverages. ► BOOK IT HERE

👉 ATV tour

⭐️⭐️⭐️⭐️⭐️ 1465 Reviews

You will spend four hours at the Extreme Adventure Eco Park to zipline, man your own ATV, and swim in a freshwater cenote. All activities are family-friendly. ► BOOK IT HERE

Isla Mujeres aerial view from Punta Sur
Isla Mujeres Overview

Tips For Visiting Cancun in September

Bring mosquito repellent

Mosquitos are always prevalent in the Caribbean, but they are at their worst in the summer months, including early September. Apply and reapply mosquito repellant all day!

Bring a reusable water bottle

It is not safe to drink tap water in Mexico, so it’s imperative that you bring a reusable water bottle. Many hotel rooms and resorts offer free bottled water or bottled water for purchase.

Find amazing hotel and resort deals

Hotels and all-inclusive resorts have some of the lowest prices of the entire year in September. Use sites like and Expedia to find the perfect hotel and packages deals.

Purchase a good travel insurance plan

So you usually have the best experiences on your vacations, but you have to be prepared for the worst, too. Even if you’re the most careful traveler, things happen out of your control. I recommend and use SafetyWing, which I find relatively affordable and quite comprehensive.

Otherwise, you can find the best solution for you by using a site aggregator, Travel Insurance master. You just fill out their form with your needs and the system pulls out the best insurance company for you.

Cancun Playa Delfines Beach
Cancun playa Delfines

Cancun in September FAQs

Is September a good time to visit Cancun?

The short answer is yes. If you are a person who can tolerate heat, humidity, and rain, there are many ways to enjoy Cancun in September regardless of the weather. There will be virtually no crowds at popular tourist attractions, and lodging prices are at their very lowest of the year. 

On sunny days (which there will be plenty of) beaches are extremely enjoyable in September. The water is warm and refreshing, and in some parts of the day, you may even have certain beaches to yourself!

Overall, Cancun is the perfect place to escape for a vacation in September.

How hot is Cancun in September?

Average daily temperatures may appear normal for the fall months, but when you consider the humidity (the “felt temperature”) the game changes.

September is the most humid month of the year at 70 to 100 percent humidity. Keep this in Dress and plan accordingly for any outdoor excursions, especially if you have a health condition.

You may want to spend time in your hotel room during the hottest hours of the day, which are typically between 11 am and 2 pm, or in the pool with a rash guard and a hat on to protect you from the sun.

Cancun playa langosta
Playa Langosta aerial View

What is the best time of year to go to Cancun?

The most popular months to visit Cancun are usually December through April, which is the high season. This is mostly due to the Christmas and New Year holiday breaks, and the fact that the weather is generally dry and not too hot.

Weather conditions may not be the most ideal in September, but there truly is no “bad” time to enjoy everything Cancun has to offer.

It all comes down to what you are looking to experience on your vacation, and what you are willing to sacrifice (ex: less sunny days, more humidity, cheaper hotel prices for hurricane season).

Ultimately, September in Cancun is actually one of the most tranquil times to visit.

Having said that is always a good time to visit Cancun.

How are the beaches in Cancun in September?

The beaches are virtually empty, with far fewer crowds than in other months of the year. Beaches on the coast are typically more hot and muggy than inland destinations. If you’re planning to spend a day at one of Cancun’s many beaches, it’s important to dress accordingly, stay hydrated, and wear sunscreen! 

Is Cancun worth visiting?

As someone who has lived in Cancun for 7 years and counting, yes I can tell you that Cancun is worth visiting, whether you are a solo traveler or you travel with your family or friends, you will have a blast in Cancun.

With so many things to do in Cancun and its surroundings, there are many Cancun itineraries that you can follow based on how many days you are staying.

Cenote Corazon

Is Cancun safe for tourists?

The short answer is Yes, Cancun is relatively safe for tourists. You may have read or heard about new waves of illness or rises in violent crime. It’s important to consider these factors of course, but Cancun is a very safe destination if you are vigilant and use common sense.

Airports, hotels, and entertainment venues continue to take extra measures to ensure visitors have a safe and enjoyable experience in Cancun.

The crime rate in Cancun is actually lower than that of some U.S. cities, including New Orleans, Kansas City, and Philadelphia. To still practice increased caution, it’s best to stay in well-lit tourist areas, book lodging in the Hotel Zone, and avoid being out alone past midnight.

What is the rainiest month in Cancun?

September is one of the wettest months of the year, but October is actually the rainiest month of them all. September sees an average of 8 to 11 inches of total rainfall, while October sees a total rainfall of 12 to 16 inches. 

Even a rainy day can mean a passing shower in the Caribbean, however. So don’t pay attention to the rain factor too much.

Weather in Cancun in September: Final thoughts

Now that you have read this post, I am sure you are able to tell whether September is a good month to visit or not.

Personally, I would wait until the last minute to check the weather forecasts and then book. You will always be able to grab a great deal in this low-season month.

Just travel with an open mind and a happy heart and you will have a blast in Cancun in September!

About the Author

Hey there! This is Isabella, the owner, and writer of this site. I have been living in Cancun for the past 12 years and although I have been roaming around Mexico, Cancun’s spectacular turquoise waters and pristine beach draw me back to this popular Mexican beach destination. That is why I decided to start this blog, to show you all the beauty you can find in Cancun and share helpful travel tips to help you plan a fabulous vacation in Cancun!

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