The weather in Sisteron in August is hot. The average temperatures are between 15°C and 30°C. Usually the days in August are hot while the nights are a bit cooler.
You can expect about 3 to 8 days of rain in Sisteron during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Sisteron in August 2026.
If you’re planning to visit Sisteron in the near future, we highly recommend that you review the 14 day weather forecast for Sisteron before you arrive.
Temperatures
30° / 15°
Rainy Days
3
Snowy Days
0
Dry Days
28
Rainfall
47
mm
Sun Hours
11.8
Hrs
