Cancun Weather in September: What to Expect
Cancun weather in September brings a significant number of hot days, with 17 out of 30 days seeing temperatures exceeding 90°F (32°C). This makes it one of the hottest months in this tropical paradise. Daytime highs generally average around a warm 89°F (32°C). The weather during September includes both high temperatures and significant rainfall, marking it as the wettest month of the year. If you’re planning a trip to Cancun in September, you can expect warm, tropical weather that’s perfect for beach activities.
September also signals the peak of the rainy season in Cancun. You should anticipate about 9 inches (228 mm) of rain spread over seven days. However, don’t let this deter you; the rain is typically brief and followed by plenty of sunshine, allowing you to enjoy your Cancun vacation without major interruptions. The Cancun Hotel Zone remains a popular area for tourists to stay and soak in the weather.
As summer transitions into fall, Cancun’s climate undergoes subtle changes in September. Humidity levels range between 75% to 85% throughout the day, making the heat feel even more intense. Thankfully, the sea breeze and cool ocean waters provide a refreshing break from the sweltering temperatures.
For those seeking a hot-weather vacation with fewer crowds and lower prices, Cancun in September is ideal. The combination of high temperatures, occasional rain, and fewer tourists creates a unique travel experience. Keep reading to find out more about what the weather in Cancun holds during this month.
Average Temperatures in Cancun in September
Planning a trip to Cancun in September involves understanding the average temperatures to help you prepare adequately. Despite being the rainy season, Cancun remains a top choice for sun-seekers. Let’s delve into the typical highs and lows you’ll encounter in September.
Daytime High Temperatures
In September, Cancun experiences very high temperatures, with daytime highs reaching up to 33°C (91°F). This is comparable to the heat experienced in June, July, and August. On average, September sees 17 days with temperatures exceeding 32°C (90°F), making it quite a hot month. The highest recorded temperature in September was 39°C (102°F).
Heat Mitigation: The intense Cancun September temperature can be somewhat alleviated by coastal and sea breezes. However, protection from the sun and staying hydrated is essential due to the combined heat and humidity.
Sun Protection: Use high SPF sunscreen, wear wide-brimmed hats, and lightweight, breathable clothing.
Hydration Tips: Always carry a water bottle and avoid consuming too many caffeinated or alcoholic beverages.
Do read our article: 5-Day Cancun Itinerary: Your Tropical Escape
Nighttime Low Temperatures
Cancun Weather in September: What to Expect
At night, Cancun cools slightly but remains warm, with average low temperatures in September around 25°C (82°F). This makes it perfect for evening beach walks or dining outdoors.
Occasional Cool Nights: Occasionally, nighttime temperatures can drop to 19°C (66°F), especially towards the end of the month. However, this is rare, and most nights in September are warm and humid.
Humidity Impact: The hot days combined with high humidity can make the heat feel even more intense. Cancun's humidity in September ranges from 62% to 98%, adding to the feeling of warmth and stickiness.
Humidity Levels in Cancun During September
When planning a trip to Cancun in September, it’s crucial to consider the humidity. It’s often over 60%, and can sometimes reach 90% or even 100%, making the air feel hotter and more humid, leaving you feeling muggy and sticky.
Morning Humidity Percentages
In the mornings, Cancun's humidity ranges between 80% and 90%. The air is already saturated with moisture, making it feel warm and humid right from the start. If you're planning to head out early, you’ll definitely feel the high humidity.
Early Activities: Plan early morning activities in shaded or air-conditioned areas to stay comfortable.
Hydration: Start your day with a glass of water to stay hydrated from the get-go.
Clothing: Wear moisture-wicking apparel to keep sweat at bay.
Afternoon Humidity Percentages
As the day heats up, humidity levels tend to drop slightly in the afternoon but still remain high, ranging from 70% to 80%. The combination of high temperatures and moisture makes the afternoons feel hotter. To cope, drink plenty of water, wear light clothing, and take breaks in cool places.
Midday Breaks: Take breaks indoors or in shaded areas to cool down.
Light Meals: Consume light, refreshing meals to avoid feeling sluggish.
Cooling Products: Use cooling towels and fans to stay refreshed.
Rainfall in Cancun in September
Cancun Weather in September: What to Expect
Cancun weather in September is marked by the wettest month, with an average of 11 inches (270 mm) of rain spread over 10 rainy days. The weather features a tropical climate with warm temperatures, increased humidity, and potential rain. The chances of rain start at 29% at the beginning of the month and rise to 36% by the end. Despite the rainfall, Cancun still enjoys nine hours of sunshine daily in September.
Average Rainfall Amounts
September holds the record as the wettest month with an average of 11 inches (270 mm) of rain. Over the past 43 years, September's rainfall has remained fairly consistent with minor fluctuations.
Historical Data: The driest September on record was in 2004 with 635 mm of rain, while the wettest was in 2013 with 2270 mm.
Rain Expectations: Be prepared for varied rain intensity and frequency, but rest assured that wet weather usually doesn’t last all day.
Number of Rainy Days
On average, Cancun experiences about 26 rainy days in September. There’s a 40% chance of rain on any given day. In September 2023, there were 6 rainy days, 17 cloudy days, and only 7 sunny days.
Rain Patterns: Even though September has many rainy days, the rain usually comes in short bursts rather than all-day downpours.
Adaptive Plans: Have a mix of indoor and outdoor plans to adapt to sudden weather changes.
Intensity of Rainfall
The most common types of rain in September are moderate rain, light rain, and thunderstorms. The heaviest rainfall in one day was about 12 mm, which is relatively light. Despite being the wettest month, the rain is generally not too heavy, allowing visitors to enjoy Cancun between showers.
Rain Gear: Carry a lightweight rain jacket or travel umbrella.
Safety During Thunderstorms: Seek shelter and avoid open areas during thunderstorms.
Post-Rain Activities: Enjoy the fresh, cooler air immediately after rain showers.
Hurricane Season in Cancun
Cancun Weather in September: What to Expect
Planning a trip during Cancun weather in September means being aware that it’s the peak of the Atlantic hurricane season, which runs from June to November, with most storms occurring between August and October. However, Cancun has only been hit by two hurricanes in the last 30 years, making such events rare. Cancun International Airport serves as a key transportation hub, conveniently located near the Hotel Zone.
Hurricanes Gilbert on September 5, 1988, and Wilma on October 21, 2005, are the notable ones. Hurricane Wilma was the strongest ever in the Atlantic, causing significant damage and shutting down tourism for six months. Yet, Cancun bounced back strong, showcasing its resilience and community spirit.
Despite the chance of storms, September can still be a great time to visit Cancun. The odds of a major hurricane hitting are low, and you’ll find fewer people and lower prices, making it a good deal for budget-conscious travelers.
Tips for Visiting Cancun During Hurricane Season:
Stay Informed: Keep up with the weather by checking reliable sources like the National Hurricane Center and local news.
Travel Insurance: Buy travel insurance to cover any issues like delays or cancellations due to bad weather.
Emergency Plans: Learn what your hotel does in an emergency and where to go if you need to evacuate.
Weather Apps: Use apps like Accuweather and Storm Radar: Weather Tracker for updates and safety advice.
Visiting Cancun in hurricane season might seem daunting, but remember, not all storms turn into hurricanes. And even if one does, the chance of hitting Cancun is small. With the right information and planning, you can have a fantastic time in Cancun in September. Despite some concerns about Cancun safety, millions of tourists visit each year, and the area remains a popular destination.
Sea Temperatures in Cancun in September
The Caribbean Sea during Cancun weather in September is perfect for beach lovers and water sports enthusiasts in September. Sea temperatures average between 84°F to 85°F, making the ocean feel like a warm bath. It’s ideal for swimming, snorkeling, and various other water activities.
Early September sees sea temperatures around 84°F, rising to 85°F by the end of the month. These temperatures remain consistently warm, rarely dipping below 80°F or exceeding 87°F. The sea is often warmer than the resort pools, offering a refreshing escape from the heat.
Average Ocean Temperatures
September's average sea temperature in Cancun is a steady 85.1°F. Historical data over the past decade shows temperatures ranging from 82.9°F to 86.9°F. The highest average was 86°F in 2023.
Historical Trends: Compared to September's high air temperature of 93°F and low of 76°F, the sea provides a refreshing escape.
Comfortable Conditions: It’s warm enough for extended periods of water fun and relaxation.
Ideal Water Conditions for Swimming and Water Sports
Cancun Weather in September: What to Expect
September’s warm sea temperatures in Cancun are perfect for a variety of water activities. Swimmers, snorkelers, and scuba divers will enjoy the warm waters. The Mesoamerican Barrier Reef System is vibrant and easily accessible.
Water Sports: Kayaking, paddleboarding, and surfing also benefit from the warm waters.
Extended Enjoyment: Participants can enjoy their activities longer without getting cold.
Safety and Enjoyment: The sea state is monitored, with charts and safety guidelines for swimming.
September offers 12 hours of daylight and 6 hours of sunshine, with a UV index of 11. It’s a great time to enjoy Cancun’s warm seas and beaches. Just remember to use reef-safe sunscreen, stay hydrated, and take breaks in the shade.
Cancun Weather in September Compared to Other Months
When planning a trip to Cancun, it’s essential to know how September's weather compares to other months. The best weather is typically from December to April, with temperatures ranging between 81°F and 87°F. However, September also offers unique benefits for travelers.
Comparison to Peak Season Months
The peak season in Cancun brings the best weather and a surge of visitors. The water is warm, ideal for swimming and water activities. However, expect higher prices and crowded attractions.
High Season: The peak season offers optimal weather but comes with higher costs and more crowded attractions.
September's Contrast: September falls in the low season, characterized by warmer and more humid weather. Temperatures can reach 89°F to 93°F, starting to cool down later in the month. There’s a risk of hurricanes and increased rainfall, but you'll still find plenty of sunny days to enjoy Cancun.
Advantages of Visiting in September
Visiting in September has several advantages:
Lower Prices: With fewer tourists, you can save money on hotels, flights, and activities. Cancun hotels often offer lower rates during September.
Fewer Crowds: It’s quieter at beaches, restaurants, and attractions, providing a more peaceful visit.
Warm Ocean Temperatures: The sea is a comfortable 84°F, perfect for swimming and snorkeling.
Unique Events: Celebrate Mexican Independence Day on September 16th with parades and events.
While some attractions might have shorter hours or close due to the low season, there’s still plenty to see and do in Cancun. With proper planning, September can be a fantastic time to visit, offering pleasant weather, lower costs, and a relaxed atmosphere. Cancun travel during the low season also means fewer crowds and more budget-friendly options.
Cancun in September: What to Pack
When packing for Cancun in September, prepare for warm, humid weather and the possibility of rain. As a seasoned traveler, I’ve found that the right clothes and accessories can make a significant difference, ensuring a comfortable and enjoyable trip.
Essential Clothing Items
With high temperatures and humidity, I recommend packing light, breathable clothing. Here are my top picks:
5 swimsuits (one for each day of your stay)
3-4 swimsuit cover-ups
Shorts and tank tops for daytime activities
1-2 sundresses for evening outings
A light rain jacket or travel umbrella
Comfortable walking shoes for exploring the city
Flip flops or sandals for beach and pool time
Choose clothing made of lightweight, quick-drying materials like cotton, linen, or moisture-wicking fabrics. These will help you stay cool and dry in the humid weather.
Recommended Accessories
Don’t forget these essential accessories for your Cancun trip in September:
High SPF sunscreen (at least SPF 50)
Insect repellent to keep mosquitoes away
2+ pairs of sunglasses (in case one gets lost in the ocean)
A wide-brimmed hat or straw hat for sun protection
A reusable water bottle to stay hydrated
Waterproof phone case for beach and pool days
Backpack or beach tote for carrying essentials
Mosquito repellent bracelets and sunscreen mist for extra protection
Activated charcoal or over-the-counter medication for stomach issues
USD cash for tipping at all-inclusive resorts
Backup feminine care products (hotel prices can be high)
Lastly, always pack an extra set of clothes in your carry-on, just in case your checked bag is lost or delayed. With the right clothes and accessories, you’ll be set for a fantastic Cancun vacation in September, no matter the weather.
Best Things to Do in Cancun in September
September is a great time to visit Cancun, offering a plethora of activities and attractions for all types of travelers. Even though it’s the low season, there is still plenty to do, both outdoors and indoors. Whether you seek adventure, cultural experiences, or relaxation, Cancun has something for everyone.
Outdoor Activities and Attractions
Cancun Weather in September: What to Expect
Swimming with whale sharks is an exhilarating experience in Cancun, and September is one of the best months to see these gentle giants. Snorkeling tours start at $30 USD and allow you to get up close with these magnificent creatures. This season also coincides with the nesting season for sea turtles, offering a chance to witness baby turtles making their way to the sea.
Whale Shark Tours: These are not to be missed. Book early to secure a spot.
Turtle Nesting: Seek local tours that focus on conservation efforts.
Visiting the ancient city of Chichen Itza is a must for history enthusiasts. It’s a UNESCO World Heritage Site located about 2.5 hours from Cancun. The ruins are particularly stunning during the Autumn Equinox, making it a memorable visit. Quintana Roo, the state where Cancun is located, offers numerous attractions and beautiful beaches.
Day Trips: Organize a guided tour to fully appreciate the historical significance.
Equinox Events: Check local schedules for special events during the equinox.
Swimming in cenotes is another exciting activity. These natural sinkholes with clear water are scattered across the Yucatan Peninsula and provide a refreshing way to beat the heat. Many cenotes are close to Cancun, making them perfect for a day trip.
Cenote Tours: Guided tours ensure safety and provide insightful information.
Swimming Gear: Bring snorkeling equipment for a better experience.
Don’t forget to spend time on the beaches. Playa Delfines is the largest beach and a favorite spot for locals. Even with some seaweed in September, you can still enjoy the sun, sand, and sea.
Beach Essentials: Sunscreen, towels, and a good book.
Local Spots: Ask locals for hidden beach gems.
Indoor Activities for Rainy Days
September can have rainy days, but Cancun has plenty of indoor activities to keep you entertained. The Underwater Museum of Art (MUSA) is a standout attraction, featuring over 500 sculptures submerged underwater. You can view them by boat or while snorkeling.
Museum Tours: Book a combined tour to see both underwater and above-water exhibits.
The Cancun Mayan Museum is perfect for culture enthusiasts, showcasing the history and artifacts of the Mayan civilization. Other indoor attractions include the Cancun Wax Museum and Ripley's Believe It or Not!, both of which are fun and interactive.
Cultural Sites: Allocate a few hours to thoroughly explore each museum.
Interactive Fun: Perfect for families and kids.
Shopping enthusiasts will love Cancun's many options. La Isla Shopping Village is a large outdoor mall with a variety of stores, restaurants, and activities, making it an excellent place to spend a rainy afternoon.
Retail Therapy: Explore a mix of local boutiques and international brands.
Dining Options: Take the opportunity to sample local cuisine.
Tips for Enjoying Cancun Weather in September
When planning a trip to Cancun in September, preparation is key. This month is particularly rainy, with about 270 mm of precipitation. Therefore, it’s essential to pack rain gear and be ready for sudden changes in your plans. Despite the rain, the weather remains warm, making it ideal for those who enjoy the heat and water activities.
Rain Gear: Always carry a lightweight rain jacket or umbrella.
Flexible Plans: Have backup plans for indoor activities.
Water Safety: Be mindful of stronger currents and bigger waves during the hurricane season.
Strategic Timing: Plan your days wisely, perhaps opting for indoor activities or visiting air-conditioned places during the hottest hours, typically from 11 am to 2 pm.
September is a low season in Cancun, meaning you can find excellent deals on accommodations. Enjoy the peaceful atmosphere and save money while immersing yourself in the local culture. Participate in local events like Mexico's Independence Day on September 16 to truly experience the spirit of Cancun. Always remember to stay hydrated, use sunscreen, and protect yourself from insects for a safe and enjoyable trip.
FAQ
What is the average temperature in Cancun in September?
Cancun experiences warm temperatures in September, ranging from the mid-70s to mid-80s Fahrenheit. The highest temperatures usually peak in the low 90s Fahrenheit. Every day in September sees temperatures exceeding 80°F (27°C).
How humid is Cancun in September?
Cancun's humidity in September ranges between 75-85%, making it feel hotter due to the high moisture content in the air. The humidity amplifies the sensation of warmth.
How much rain does Cancun get in September?
September is the wettest month in Cancun, receiving about 9 inches of rain over approximately 7 days. Thus, around 23 days are typically dry.
Is September part of the hurricane season in Cancun?
Yes, September falls within the peak of the hurricane season in Cancun, which runs from June to November. However, direct hurricane hits are rare, with only two occurring in the last 30 years.
How warm is the sea in Cancun in September?
The sea in Cancun is warm in September, averaging around 85°F. This makes it ideal for swimming, snorkeling, and diving.
Is September a good time to visit Cancun?
September offers lower prices and fewer crowds compared to the peak season. It’s a good time to enjoy the calm and save on accommodations and flights.
What should I pack for a trip to Cancun in September?
Pack light, breathable clothes for the heat and humidity. Bring a raincoat or umbrella for the wet season. Don't forget sunscreen, bug spray, sunglasses, a hat, and comfy shoes.
What are the best things to do in Cancun in September?
September is great for swimming, snorkeling, and water sports. It's also a good time to see turtles. You can visit Mayan ruins or indoor places like museums and malls on rainy days.
How can I make the most of my Cancun vacation in September?
Be ready for rain and pack right. Enjoy the beach and water activities, but watch out for strong currents and big waves. Plan indoor activities or go to places with air conditioning during the hottest part of the day.
