Click on a day for an hourly weather forecast
The temperatures in Cannes in September are comfortable with low of 19°C and and high up to 25°C.
You can expect a few rainy days in Cannes during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Cannes in September 2025.
If you’re planning to visit Cannes in the near future, we highly recommend that you review the 14 day weather forecast for Cannes before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 12° / 7° | 3 | 28 | 0 | 63 mm | Ok | Cannes in January |
| February | 13° / 7° | 4 | 23 | 1 | 76 mm | Ok | Cannes in February |
| March | 15° / 9° | 4 | 27 | 0 | 71 mm | Good | Cannes in March |
| April | 17° / 11° | 4 | 26 | 0 | 87 mm | Good | Cannes in April |
| May | 21° / 14° | 3 | 28 | 0 | 74 mm | Good | Cannes in May |
| June | 25° / 18° | 3 | 27 | 0 | 49 mm | Perfect | Cannes in June |
| July | 27° / 21° | 2 | 29 | 0 | 33 mm | Perfect | Cannes in July |
| August | 28° / 21° | 1 | 30 | 0 | 23 mm | Perfect | Cannes in August |
| September | 25° / 19° | 2 | 28 | 0 | 54 mm | Perfect | Cannes in September |
| October | 20° / 15° | 4 | 27 | 0 | 129 mm | Good | Cannes in October |
| November | 16° / 11° | 5 | 25 | 0 | 180 mm | Good | Cannes in November |
| December | 13° / 8° | 3 | 28 | 0 | 100 mm | Ok | Cannes in December |