Sisteron Weather in September
What's the weather like in Sisteron (Provence-Alpes-Côte d'Azur) in September 2025?
The climate in Sisteron during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Sisteron and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 21°C (69°F), whilst at night 12°C (54°F) is normal.
| Daytime temperature | 20.8°C 69.4°F |
|---|---|
| Nightly temperature | 12.1°C 53.7°F |
| Average temperature | 16.4°C 61.5°F |
| Daily sunshine | 8 hrs |
| Avg rainfall | 70 mm 2.8 ins |
| Rainy days | 9 days |
| Sea temperature | 21.1°C 69.9°F |
| Humidity | 71% |
| Windspeed | 13kph 8 mph |
On average September is the 4th wettest month of the year in Sisteron with around 70mm 2.8 inches of rain making it a reasonably dry 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 8 hours of sunshine per day.
September temperatures in Sisteron
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 Sisteron in September 2025.
Other monthly averages
Best places to visit in September
Sisteron weather stats
| Hottest month: | July | 24.6°C 76.3°F |
|---|---|---|
| Driest month: | July | 43mm 1.7ins |
| Sunniest month: | July | 11.2hrs |
| Coldest month: | January | 6°C 42.8°F |
| Wettest month: | November | 86mm 3.4ins |
© Google
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