The temperatures in Cassis in September are comfortable with low of 19°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Cassis during the month of September. 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 Cassis in September 2026.
If you’re planning to visit Cassis in the near future, we highly recommend that you review the 14 day weather forecast for Cassis before you arrive.
Temperatures
24° / 19°
Rainy Days
3
Snowy Days
0
Dry Days
27
Rainfall
65
mm
Sun Hours
11.7
Hrs
