Weather in Cancun in September 2025
Average weather
Average temperature in Cancun in September
Going from a maximum of +31°C during the day to a minimum of +25°C during the night, the temperature in September averages around +30°C.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +31°C to +31°C.
Is Cancun warm or cold in September?
Cancun is typically warm in September.
Maximum temperatures go down compared to the previous month from +30°C to +29°C. The minimum temperature also goes up from +26°C to +26°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
September is one of the warmest months in Cancun, here is the comparison with other months:
Water temperature in Cancun in September
Water in Cancun in September is Very warm. It varies from +28°C to +30°C, with an average of +29°C. Note that the air temperature is lower than the water temperature, averaging around +29°C.
The water temperature in September is one of the warmest of the entire year:
Can you swim in Cancun in September?
Climate in Cancun in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +30°C | +29°C | +28°C | ||||
| Min. temperature | ||||||
| +22°C | +22°C | +15°C | ||||
| Max. temperature | ||||||
| +36°C | +33°C | +33°C | ||||
| Rainfall | ||||||
| 123 mm | 170 mm | 160 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Avg. water temperature | ||||||
| +29°C | +29°C | +28°C | ||||
| Humidity | ||||||
| 80% | 82% | 82% | ||||
| Air pressure | ||||||
| 1014 HPa | 1012 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 1 | ||||
| Cloudy days | ||||||
| 3 | 2 | 4 | ||||
| Rainy days | ||||||
| 26 | 26 | 24 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as ok as in August. It’s getting colder in September. From +30°C in the day, the average maximum temperature lowers to +29°C. Prepare for more rain. Average rainfall goes from 123 mm to 170 mm. Humidity rises from 80% to 82%. The average wind speed doesn’t change much during September, staying around 2 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains ok.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Cancun is gradually decreasing during September, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Cancun?
Climate Change over Years
The climate in Cancun in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+27°C) and the highest in 2019 (+30°C). The driest year was 2004 with only 635 mm of rainfall, and the wettest year was 2013 with 2270 mm.
FAQ
Is September a good time to visit Cancun?
Can you sunbathe in Cancun in September?
Can you swim in Cancun in September?
Is Cancun rainy in September?
Is it sunny in Cancun in September?
Other cities in Mexico
Monthly weather in Cancun
Source of the data
For this page, we’ve looked at the typical weather in Cancun, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.