Weather in Annecy for September 2026
In general, the average temperature in Annecy at the beginning of September is 25.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.3 °C by the end of September.
The climate of Annecy in September is notably wet, with an average of 15 rainy days, and a total of 467.9 mm of precipitation.
Is September a good time to visit Annecy? check out the best time to travel to Annecy page.
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Annecy Weather September
Temperatures trend during September in Annecy
September weather in Annecy day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 24° /9° | 23.1 mm | 6 | |
| 2 Sept. | Sunny | 24° /10° | 2.4 mm | 6 | |
| 3 Sept. | Sunny | 26° /11° | 5.7 mm | 6 | |
| 4 Sept. |  Cloudy | 25° /11° | 11.3 mm | 5 | |
| 5 Sept. |  Light rain shower | 23° /10° | 2.4 mm | 5 | |
| 6 Sept. | Sunny | 26° /9° | 0 mm | 6 | |
| 7 Sept. | Sunny | 28° /11° | 0.3 mm | 7 | |
| 8 Sept. | Sunny | 25° /12° | 7.6 mm | 6 | |
| 9 Sept. | Sunny | 20° /11° | 4.7 mm | 5 | |
| 10 Sept. | Sunny | 24° /10° | 1.2 mm | 6 | |
| 11 Sept. | Sunny | 22° /9° | 5.4 mm | 5 | |
| 12 Sept. | Patchy rain possible | 20° /6° | 1.6 mm | 5 | |
| 13 Sept. |  Moderate or heavy rain shower | 17° /6° | 9.7 mm | 4 | |
| 14 Sept. |  Mist | 19° /7° | 1.7 mm | 4 | |
| 15 Sept. | Mist | 22° /8° | 2.6 mm | 6 | |
| 16 Sept. |  Patchy light drizzle | 19° /7° | 1 mm | 5 | |
| 17 Sept. |  Thundery outbreaks possible | 22° /7° | 0.1 mm | 5 | |
| 18 Sept. | Sunny | 21° /8° | 7.2 mm | 5 | |
| 19 Sept. | Patchy rain possible | 23° /8° | 0.6 mm | 5 | |
| 20 Sept. |  Partly cloudy | 24° /8° | 0.1 mm | 6 | |
| 21 Sept. | Patchy light drizzle | 23° /8° | 12.2 mm | 5 | |
| 22 Sept. |  Patchy light rain with thunder | 16° /8° | 13.9 mm | 4 | |
| 23 Sept. | Light rain shower | 13° /5° | 15.7 mm | 3 | |
| 24 Sept. | Sunny | 15° /5° | 0.9 mm | 4 | |
| 25 Sept. | Sunny | 17° /5° | 0.4 mm | 5 | |
| 26 Sept. | Sunny | 16° /7° | 17.6 mm | 4 | |
| 27 Sept. |  Overcast | 18° /6° | 2 mm | 4 | |
| 28 Sept. | Partly cloudy | 17° /4° | 2.8 mm | 4 | |
| 29 Sept. | Mist | 19° /5° | 0 mm | 5 | |
| 30 Sept. | Mist | 19° /6° | 1.9 mm | 4 | |
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Annecy weather in September vs August vs October
| August | September | October | |
|---|---|---|---|
| Weather | Sunny | Sunny | Patchy rain possible |
| Temperatures | 31°/10° | 25°/5° | 20°/3° |
| Rainfall | 374 mm | 468 mm | 571 mm |
| Wind | 7.8 km/h | 6.9 km/h | 7.1 km/h |
| Humidity | 69% | 79% | 84% |
| Rainy days | 14 days | 15 days | 13 days |
| Dry days | 17 days | 15 days | 18 days |
Planning a trip to Annecy? Discover the best time to visit
Annecy in September - FAQ
What are the expected maximum and minimum temperatures in Annecy during September?
How much rainfall should be expected in Annecy during September?
What are the typical wind conditions in Annecy during September?
September rainfall patterns in Annecy
UV exposure in Annecy during September
What to pack to Annecy in September?
Cold & raw · highs around 25 °C, frequent showers
As you prepare for your trip to Annecy 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 Annecy, during September, is comfortable and enjoyable, regardless of the weather conditions.
🧥 Clothing
👟 Footwear
🎒 Accessories
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Where is Annecy?Get accurate weather forecasts for Annecy, located at latitude 45.909 and longitude 6.126. Stay updated with localized weather information tailored for Annecy.