Santa Bárbara Weather in September
What's the weather like in Santa Bárbara (Potosí) in September 2025?
The climate in Santa Bárbara during September can be summarized as cool and very dry.
September is in the spring in Santa Bárbara and is typically the 5th coldest month of the year. Daytime maximum temperatures average around a cool 16°C (61°F), whilst at night -2°C (28°F) is normal.
| Daytime temperature | 16°C 60.7°F |
|---|---|
| Nightly temperature | -2.4°C 27.8°F |
| Average temperature | 6.8°C 44.2°F |
| Daily sunshine | 9.4 hrs |
| Avg rainfall | 3 mm 0.1 ins |
| Rainy days | 2 days |
| Sea temperature | 17.8°C 64°F |
| Humidity | 35% |
| Windspeed | 16.6kph 10 mph |
On average September is the 6th driest month of the year in Santa Bárbara with around 3mm 0.1 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 9.4 hours of sunshine per day.
September temperatures in Santa Bárbara
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 Bárbara in September 2025.
Other monthly averages
Best places to visit in September
Santa Bárbara weather stats
| Hottest month: | January | 16.5°C 61.7°F |
|---|---|---|
| Driest month: | July | 1mm 0ins |
| Sunniest month: | August | 10.1hrs |
| Coldest month: | July | 13°C 55.4°F |
| Wettest month: | January | 55mm 2.2ins |
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