Cosolapa Weather in September
What's the weather like in Cosolapa (Oaxaca) in September 2025?
The climate in Cosolapa during September can be summarized as hot, humid and very wet.
September is in the fall / autumn in Cosolapa and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a muggy 30°C (86°F), whilst at night 20°C (68°F) is normal.
| Daytime temperature | 30.1°C 86.2°F |
|---|---|
| Nightly temperature | 19.9°C 67.8°F |
| Average temperature | 25°C 77°F |
| Daily sunshine | 5.1 hrs |
| Avg rainfall | 474 mm 18.7 ins |
| Rainy days | 19 days |
| Sea temperature | 29.3°C 84.7°F |
| Humidity | 81% |
| Windspeed | 11.2kph 7 mph |
On average September is the 2nd wettest month of the year in Cosolapa with around 474mm 18.7 inches of rain making it a very wet time to visit. This rainfall is typically spread over 19 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.1 hours of sunshine per day.
September temperatures in Cosolapa
September rainfall
September hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Cosolapa in September 2025.
Other monthly averages
Best places to visit in September
Cosolapa weather stats
| Hottest month: | May | 32.7°C 90.9°F |
|---|---|---|
| Driest month: | February | 50mm 2ins |
| Sunniest month: | February | 6.1hrs |
| Coldest month: | January | 25.7°C 78.3°F |
| Wettest month: | July | 518mm 20.4ins |
© Google
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