Weather in Cannes for September 2025
Until now, September 2025 in Cannes is slightly cooler than the historical average by -0.7 °C.
Expect cooler weather in the next days in Cannes with the forecast suggesting a temperature of 23.5 °C, lower than the historical average.
In general, the average temperature in Cannes at the beginning of September is 25.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °C by the end of September.
The climate of Cannes in September is notably wet, with an average of 12 rainy days, and a total of 76.8 mm of precipitation.
Is September a good time to visit Cannes? check out the best time to travel to Cannes page.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Cannes Weather September
Temperatures trend during September in Cannes
September weather in Cannes day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 25° /20° | 2.2 mm | 6 | |
| 2 Sept. | Sunny | 27° /20° | 0.1 mm | 6 | |
| 3 Sept. | Sunny | 26° /20° | 0 mm | 6 | |
| 4 Sept. |  Partly cloudy | 26° /20° | 2.3 mm | 6 | |
| 5 Sept. | Sunny | 25° /19° | 9 mm | 6 | |
| 6 Sept. | Sunny | 24° /18° | 0.1 mm | 6 | |
| 7 Sept. | Sunny | 25° /18° | 1.6 mm | 6 | |
| 8 Sept. | Sunny | 25° /19° | 5 mm | 6 | |
| 9 Sept. | Sunny | 25° /19° | 1.7 mm | 6 | |
| 10 Sept. | Sunny | 24° /19° | 3.3 mm | 6 | |
| 11 Sept. | Partly cloudy | 25° /19° | 0 mm | 6 | |
| 12 Sept. | Partly cloudy | 25° /18° | 0.1 mm | 7 | |
| 13 Sept. |  Light rain shower | 24° /17° | 5.3 mm | 5 | |
| 14 Sept. | Sunny | 24° /16° | 0 mm | 6 | |
| 15 Sept. | Sunny | 23° /16° | 0 mm | 6 | |
| 16 Sept. | Sunny | 27° /20° | 0 mm | 1.3 | |
| 17 Sept. | Sunny | 25° /20° | 0 mm | 1.4 | |
| 18 Sept. | Sunny | 24° /19° | 0 mm | 1.4 | |
| 19 Sept. | Sunny | 25° /18° | 0 mm | 1.4 | |
| 20 Sept. | Sunny | 26° /19° | 0 mm | 6 | |
| 21 Sept. | Sunny | 25° /21° | 0 mm | 6 | |
| 22 Sept. | Patchy rain possible | 24° /20° | 0.2 mm | 5 | |
| 23 Sept. | Patchy rain possible | 24° /19° | 0.8 mm | 5 | |
| 24 Sept. | Patchy rain possible | 23° /19° | 0.3 mm | 5 | |
| 25 Sept. | Sunny | 21° /16° | 0 mm | 5 | |
| 26 Sept. | Sunny | 20° /16° | 0 mm | 5 | |
| 27 Sept. | Sunny | 21° /15° | 0 mm | 5 | |
| 28 Sept. | Sunny | 22° /14° | 0 mm | 5 | |
| 29 Sept. | Patchy rain possible | 22° /18° | 0.4 mm | 4 | |
| 30 Sept. | Sunny | 22° /17° | 0 mm | 6 | |
| Next | |||||
Cannes weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Patchy rain possible |
| Temperatures | 28°/22° | 23°/18° | 21°/16° |
| Rainfall | 80 mm | 77 mm | 151 mm |
| Wind | 14.2 km/h | 17.5 km/h | 18.5 km/h |
| Humidity | 60% | 64% | 72% |
| Rainy days | 5 days | 12 days | 19 days |
| Dry days | 26 days | 18 days | 12 days |
Planning a trip to Cannes? Discover the best time to visit
Cannes in September - FAQ
Cannes water temperatures in September
The average water temperature of the Mediterranean Sea near Cannes in September is 22.8 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in Cannes in September?
- The average water temperature in Cannes in September is 22.8 °C.
- Can you swim in Cannes in September?
- Comfortably warm for most people. Sensitive swimmers might prefer a light rash-guard, but wetsuits are rarely needed.
What to pack to Cannes in September?
As you prepare for your trip to Cannes in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Cannes, during September, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
September rainfall patterns in Cannes
UV exposure in Cannes during September
Quick links
Where is Cannes?Get accurate weather forecasts for Cannes, located at latitude 43.551 and longitude 7.013. Stay updated with localized weather information tailored for Cannes.