What is the weather like in Cancún in September?

Expect temperatures between 26°C and 30°C with 55% average rain probability and about 8 hours of sunshine daily.

What is the weather like in Cancún in September?

Cancún in September scores 52/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit Cancún in September?

September in Cancún is ideal for: Budget travelers, Business travelers.

Cancún Weather in September | 30-Year Forecast

Avg High

30°C

Hottest around day 1

Avg Low

26°C

Coolest around day 29

Rainy Days

30days

55% avg rain chance

Sunshine

8hrs/day

Autumn season

Sea Temperature in September

Caribbean Sea(Mar Caribe)

29.4°C

Monthly Average

Water Feel

🌴Tropical

Perfect for swimming and water sports

Swim Rating

✅Excellent for swimming

Based on average sea surface temperature

Body of Water

Caribbean Sea

Mar Caribe

Cancún coastline

Essential Travel Info for Cancún

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

MXN

$ Mexican peso

Language

Spanish

Driving

Right side

Connect

High-speed wireless internet (5G) is wid...

Safety

Travel Precautions

GPI: 2.612

Travel Intelligence

Exclusive flight analytics & health data for Cancún

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

59/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Mar

Low

Sep

Monthly Traffic Distribution

258

Jan

266

Feb

293

Mar

239

Apr

233

May

254

Jun

249

Jul

227

Aug

Sep

193

Oct

268

Nov

243

Dec

Traffic Level

Low Season

Key Connections

Mexico City Licenciado Benito Juarez (MEX)

Monterrey General Mariano Escobedo (MTY)

Toronto Pearson (YYZ)

Dallas-Fort Worth (DFW)

Guadalajara Don Miguel Hidalgo Y Costilla (GDL)

Health & Safety Advisory

CDC travel health recommendations

9 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Chikungunya

There iselevated chikungunya riskin Mexico.Chikungunya vaccinationmay be considered for people traveling or moving to this location if they are planning to stay for an extended period of time (for example, 6 months or more).

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Mexico.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Mexico. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Mexico.

Malaria

CDC recommends that travelers going to certain areas of Mexico take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasCampeche, Chiapas, and the southern part of Chihuahua stateRare in the states of Oaxaca, Sinaloa, Sonora, and TabascoNo malaria transmission along the U.S.–Mexico borderDrug resistanceNoneSpeciesP. vivax(100%)Recommended chemoprophylaxisCampeche, Chiapas, and the southern part of Chihuahua state: Atovaquone-proguanil, chloroquine, doxycycline, mefloquine, primaquine5, tafenoquine2All other areas with malaria transmission: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)4Updated April 23, 2025See footnotes

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

+3 more

Source: CDC Travelers' Health

View Complete Health Guide

Is September a Good Time to Visit Cancún?

👌Good option with minor considerations(52/100)

Short Answer

Storm season alert for Cancún in September: beyond the 30°C, 55% rain averages, hurricane risk requires travel insurance and schedule flexibility.

Decision Factors

Atlantic Hurricane season active

Atlantic zone - expect potential atlantic hurricane activity

Oppressive heat and humidity

30°C with 83% humidity - challenging conditions

Vaccinations required

Yellow Fever

Feels significantly hotter than 30°C

Heat index: 39°C due to 83% humidity

Warm tropical seas

29.4°C sea temperature - Hot Soup

Frequent rainfall expected

55% chance of rain - pack waterproofs

Good For

💰
Budget travelers
Off-peak pricing with acceptable weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

👨‍👩‍👧‍👦
Families with children
39°C heat index dangerous for children
👴
Elderly travelers
Heat index of 39°C poses health risks
🥾
Outdoor enthusiasts
55% rain probability disrupts outdoor activities
💑
Honeymoon couples
Wedding score only 74/100 - better months available

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,Cancún in September averages 30°C with 55% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: Cancún in September

What are the temperatures in Cancún in September?

Daytime highs average 30°C, nights drop to 26°C. Temperatures remain fairly consistent.

How many rainy days in Cancún in September?

Expect around 30 days with measurable rainfall. Definitely pack rain gear.

What to wear in Cancún in September?

Light, breathable fabrics. Don't forget sunglasses and a hat.

Is September peak season in Cancún?

This is off-peak season. Expect lower prices and fewer crowds.

Cancún Weather in September