Cancun weather in September
Monthly temperatures, rain, humidity, what to wear and what to pack — 2024–2025 historical average
Cancun September weather at a glance
In September, Cancun averages 27.7°C, with typical highs of 31.6°C and lows of 24.9°C. The historical average is 26 wet days and 84% humidity.
Cancun September temperature & humidity
Cancun September rain & wet days
Pack a light rain jacket, waterproof pouch and quick-dry shoes. Keep an indoor stop available between outdoor activities.
What to wear in Cancun in September
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 26 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
- DaytimeBreathable short sleeves, hat and sunscreen · average high 31.6°C
- Morning & eveningLight layer for air-conditioned rooms · average low 24.9°C
- FootwearComfortable walking shoes; quick-dry footwear for rainy days.
Packing essentials
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Cancun September sunrise & sunset times
2026 September · Local time (America/Cancun)
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 2026-09-01 | 06:31 | 19:03 | 12h 32m |
| 2026-09-15 | 06:35 | 18:50 | 12h 16m |
| 2026-09-30 | 06:38 | 18:36 | 11h 58m |
For sunset photos, arrive before the listed sunset time. Clouds, mountains and buildings can change when the sun becomes visible or disappears.
Calculated for the city coordinates with daylight saving applied. SunCalc · tz-lookup
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Best months to visit Cancun
Bar height shows our simple weather-comfort score, not a safety rating; colour shows temperature.
September weather by year
Daily weather in 2025
Daily high and low temperatures; blue labels show precipitation
Frequently asked questions
What is Cancun weather like in September?
In September, Cancun averages 27.7°C, with typical highs of 31.6°C and lows of 24.9°C. The historical average is 26 wet days and 84% humidity. Our weather-comfort rating for this month is challenging.
Does it rain a lot in Cancun in September?
There are about 26 wet days in September. Pack a rain jacket and water-resistant shoes.
What should I wear in Cancun in September?
Expect intense heat. Pack lightweight quick-dry clothing, sun protection and a refillable bottle. Rain is frequent at roughly 26 days in the month; pack a rain jacket and water-resistant shoes. High humidity makes quick-dry clothing and a spare top especially useful.
What are the best months to visit Cancun?
Recent weather data rates February, April, May among the more comfortable months.
Where can I check Cancun weather in September in real time?
Check local webcams for the view right now and a local weather service for today’s forecast. Monthly temperatures here are historical averages.
What time are sunrise and sunset in Cancun in September?
On 2026-09-15, calculated sunrise is 06:35 and sunset is 18:50 in local time (America/Cancun). Times vary by date and terrain.
Cancun weather by month
More Americas destinations in September
Open-Meteo (CC BY 4.0) · 2024–2025 historical data, aggregated and rounded by this site. Not a forecast or long-term climate normal. Calculation method and limitations