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Haute-Savoie (Annecy)
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Weather in Haute-Savoie for September 2025

Your guide to Haute-Savoie weather in September - trends and predictions

    Temperatures

  • Until now, September 2025 in Haute-Savoie is cooler than usual, with temperatures averaging 20.7 °C, this is -2.4 °C below the typical seasonal average.

  • The forecast for the next days in Haute-Savoie predicts a temperature of 17.9 °C, which is cooler than the historical average.

  • In general, the average temperature in Haute-Savoie at the beginning of September is 25.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.1 °C by the end of September.

    • Rain 🌧️

  • Haute-Savoie in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 136.2 mm.

    • More

  • Is September a good time to visit Haute-Savoie? check out the best time to travel to Haute-Savoie page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/8°
Temperatures
Average wind speed
7 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Haute-Savoie Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
24°
2
Sunny
24°
3
Sunny
26°
4
Cloudy
25°
5
Light rain shower
23°
6
Sunny
26°
7
Sunny
28°
8
Sunny
25°
9
Sunny
20°
10
Sunny
24°
11
Sunny
22°
12
Patchy rain possible
20°
13
Moderate or heavy rain shower
17°
14
Mist
19°
15
Mist
22°
16
Patchy rain possible
19°
17
Sunny
22°
18
Sunny
26°
19
Sunny
28°
20
Sunny
27°
21
Patchy rain possible
19°
22
Patchy rain possible
19°
23
Patchy rain possible
11°
24
Patchy rain possible
11°
25
Patchy rain possible
11°
26
Sunny
14°
27
Sunny
15°
28
Sunny
17°
29
Moderate rain
11°
30
Mist
20°

Temperatures trend during September in Haute-Savoie

See the weather trend as well as the moving average line

September weather in Haute-Savoie day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 24° /9° 23.1 mm 6
2 Sept. Sunny
Sunny
 24° /10° 2.4 mm 6
3 Sept. Sunny
Sunny
 26° /11° 5.7 mm 6
4 Sept. Cloudy
Cloudy
 25° /11° 11.3 mm 5
5 Sept. Light rain shower
Light rain shower
 23° /10° 2.4 mm 5
6 Sept. Sunny
Sunny
 26° /9° 0 mm 6
7 Sept. Sunny
Sunny
 28° /11° 0.3 mm 7
8 Sept. Sunny
Sunny
 25° /12° 7.6 mm 6
9 Sept. Sunny
Sunny
 20° /11° 4.7 mm 5
10 Sept. Sunny
Sunny
 24° /10° 1.2 mm 6
11 Sept. Sunny
Sunny
 22° /9° 5.4 mm 5
12 Sept. Patchy rain possible
Patchy rain possible
 20° /6° 1.6 mm 5
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 17° /6° 9.7 mm 4
14 Sept. Mist
Mist
 19° /7° 1.7 mm 4
15 Sept. Mist
Mist
 22° /8° 2.6 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.8 mm 1.1
17 Sept. Sunny
Sunny
 22° /6° 0 mm 1.4
18 Sept. Sunny
Sunny
 26° /10° 0 mm 1.4
19 Sept. Sunny
Sunny
 28° /12° 0 mm 1.4
20 Sept. Sunny
Sunny
 27° /13° 0 mm 1.4
21 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 1.2 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 19° /9° 0.8 mm 3
23 Sept. Patchy rain possible
Patchy rain possible
 11° /6° 1.9 mm 2
24 Sept. Patchy rain possible
Patchy rain possible
 11° /2° 0.8 mm 2
25 Sept. Patchy rain possible
Patchy rain possible
 11° /1° 0.2 mm 1
26 Sept. Sunny
Sunny
 14° /0° 0 mm 3
27 Sept. Sunny
Sunny
 15° /2° 0 mm 3
28 Sept. Sunny
Sunny
 17° /2° 0 mm 3
29 Sept. Moderate rain
Moderate rain
 11° /6° 5.1 mm 2
30 Sept. Mist
Mist
 20° /8° 2.9 mm 5
Next
Important Notice
Our weather forecast for Haute-Savoie in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Haute-Savoie forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Haute-Savoie weather in September vs August vs October

Compare September weather in Haute-Savoie with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherSunny
Sunny
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures27°/13°21°/8°17°/7°
Rainfall132 mm136 mm178 mm
Wind7.4 km/h7.2 km/h6.6 km/h
Humidity69%77%82%
Rainy days18 days19 days21 days
Dry days13 days11 days10 days

Planning a trip to Haute-Savoie? Discover the best time to visit

Haute-Savoie in September - FAQ

What are the expected maximum and minimum temperatures in Haute-Savoie during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Haute-Savoie during September?
Significant rainfall exceeding 136.2 mm is expected in Haute-Savoie during September, occurring over more than 19 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Haute-Savoie during September?
The average wind speed in Haute-Savoie during September is 7 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Haute-Savoie in September?

As you prepare for your trip to Haute-Savoie 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 Haute-Savoie, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long 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
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Haute-Savoie

Explore the daily rainfall trends and prepare for Haute-Savoies September weather 💧

UV exposure in Haute-Savoie during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Haute-Savoie?

Get accurate weather forecasts for Haute-Savoie, located at latitude 45.909 and longitude 6.126. Stay updated with localized weather information tailored for Haute-Savoie.

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