The climate in Santa Bárbara during September can be summarized as warm and wet.
September is in the fall / autumn in Santa Bárbara and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 26°C (79°F), whilst at night 12°C (54°F) is normal.
Daytime temperature | 25.9°C 78.6°F |
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Nightly temperature | 12.1°C 53.8°F |
Average temperature | 19°C 66.2°F |
Daily sunshine | 7.2 hrs |
Avg rainfall | 120 mm 4.7 ins |
Rainy days | 9 days |
Sea temperature | 30.1°C 86.2°F |
Humidity | 61% |
Windspeed | 10.1kph 6 mph |
On average September is the 3rd wettest month of the year in Santa Bárbara with around 120mm 4.7 inches of rain making it a wet time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.
On the flip side this corresponds to an average of 7.2 hours of sunshine per day.
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 Bárbara in September 2025.
Best places to visit in September
Hottest month: | June | 30.8°C 87.4°F |
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Driest month: | March | 3mm 0.1ins |
Sunniest month: | February | 8.6hrs |
Coldest month: | January | 16.8°C 62.2°F |
Wettest month: | August | 133mm 5.2ins |