Santa Ana Weather in September
What's the weather like in Santa Ana (Sonora) in September 2025?
The climate in Santa Ana during September can be summarized as hot and reasonably dry.
September is in the fall / autumn in Santa Ana and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a warm 34°C (93°F), whilst at night 18°C (64°F) is normal.
| Daytime temperature | 33.9°C 92.9°F |
|---|---|
| Nightly temperature | 17.6°C 63.6°F |
| Average temperature | 25.7°C 78.3°F |
| Daily sunshine | 10.2 hrs |
| Avg rainfall | 43 mm 1.7 ins |
| Rainy days | 3 days |
| Sea temperature | 29.4°C 84.9°F |
| Humidity | 49% |
| Windspeed | 11.2kph 7 mph |
On average September is the 3rd wettest month of the year in Santa Ana with around 43mm 1.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 3 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.2 hours of sunshine per day.
September temperatures in Santa Ana
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 Santa Ana in September 2025.
Other monthly averages
Best places to visit in September
Santa Ana weather stats
| Hottest month: | July | 35.1°C 95.2°F |
|---|---|---|
| Driest month: | May | 2mm 0.1ins |
| Sunniest month: | June | 12.7hrs |
| Coldest month: | January | 19.3°C 66.7°F |
| Wettest month: | July | 104mm 4.1ins |
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