BestDateWeather
✈️ Plan my tripPlan trip
Cancún, Mexico · Temperate oceanic

Cancún in September: go or not?

Mixed period. Cancún in September: 4.8/10.

📅 Updated August 2026 🛰️ ERA5 · 10 years 📍 21.16°N · 86.85°W
⚡ This month's verdict
Why not
Cancún · September
4.8
25–31°
Temperature
75%
Rain
9h
Sun
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo : Hongbin via Unsplash
The month in detail

What to expect in September

Autumn marks the end of peak season in Cancún. Temperatures drop (31.0°C) and rain returns (75.0% of days). With 75.0% of rainy days, always have indoor alternatives planned.

September ranks 12 out of 12 months in Cancún. Compared to August: 9 pts more rainy days, −0.8h of sun per day.

This month's conditions

What it's like in September

UV index
8 · high
sunscreen and hat advised
Feels like
oppressive heat
24°
Sea
30°C
warm, ideal
Daylight
12.1h of daylight
Air quality
good
AQI 24
Compare

Is September the right month?

The best month in Cancún is March (8.7/10), 3.9 pts higher than September.

See March →See all 12 months →
Context

Our verdict

Cancun is the all-inclusive Mexican beach resort par excellence: Hotel Zone built on a 25 km sand-bar island, 30 million visitors/year. March-April are my favourite months (8.7-8.8/10): 23-29°C, 25-30% rain, turquoise sea at 25°C, end of the American high season.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Cancún

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach holiday.

Country · Mexico

🗣️LanguageSpanish
💶CurrencyMexican Peso ($)
🚗DrivingRight-hand
🛡️Safety Very safe · 1/5
💰Cost of living Cheap · 2/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend Stable
🔥Hottest monthJuly · 31°C
❄️Coolest monthJanuary · 26°C
🌧️Rainiest month September · 75%

🏖️ Beach holiday

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) Modérée
Location

Where is Cancún ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Mexico
Temperate oceanic climate with a 8.7 → 4.8 gap between best and worst month. 10 years of ERA5 data to choose by project.
21.16°N · 86.85°W
Questions

Frequently asked questions

What is the best time to visit Cancún?
April is the best month with 29.0°C highs, 24.0°C lows, 9.7h of sunshine and 25.0% rainy days. The months of April & March offer comparable conditions.
How many hours of sunshine does Cancún get in April?
Cancún averages 9.7 sunshine hours per day in April. It is the sunniest month with a climate score of 8.3/10.
What is the rainiest month in Cancún?
September is the most unfavourable month with September has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Cancún in April?
In April, overnight lows reach 24.0°C, while afternoon highs average 29.0°C.
Is Cancún good in winter?
In winter (December-February), Cancún scores 7.5/10 on average — Decent period conditions for cultural visits.. The best month overall remains April with a score of 8.3/10.
When should you avoid Cancún?
September is the most difficult month to visit Cancún, with September has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Cancún in September?
In September, the sea averages 30°C in Cancún: warm, ideal. Ideal conditions for swimming and snorkeling.
Do you need sun protection in Cancún in September?
The average UV index reaches 8 in September in Cancún (high), with about 12.1h of daylight. Sunscreen and hat advised.