Mexicali Weather in September
What's the weather like in Mexicali (Baja California) in September 2025?
The climate in Mexicali during September can be summarized as very hot and very dry.
September is in the fall / autumn in Mexicali and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a warm 39°C (103°F), whilst at night 21°C (69°F) is normal.
| Daytime temperature | 39.3°C 102.7°F |
|---|---|
| Nightly temperature | 20.5°C 68.9°F |
| Average temperature | 29.9°C 85.8°F |
| Daily sunshine | 11.2 hrs |
| Avg rainfall | 7 mm 0.3 ins |
| Rainy days | 1 days |
| Sea temperature | 23.6°C 74.5°F |
| Humidity | 54% |
| Windspeed | 13.3kph 8 mph |
On average September is the 5th wettest month of the year in Mexicali with around 7mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 11.2 hours of sunshine per day.
September temperatures in Mexicali
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 Mexicali in September 2025.
Other monthly averages
Best places to visit in September
Mexicali weather stats
| Hottest month: | July | 41.9°C 107.4°F |
|---|---|---|
| Driest month: | May | 1mm 0ins |
| Sunniest month: | April | 11.9hrs |
| Coldest month: | January | 20.6°C 69.1°F |
| Wettest month: | December | 11mm 0.4ins |
© Google
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