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Weather in Geneva for September 2025

Your guide to Geneva weather in September - trends and predictions
  • In general, the average temperature in Geneva at the beginning of September is 25.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.9 °C by the end of September.

  • Geneva sees moderate rainfall in September, averaging 7 rainy days.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
24°/11°
Temperatures
Average wind speed
8 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Geneva in September average weather

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Temperatures trend during September in Geneva

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
27° /12° 2.8 mm 7
2 Sept. Sunny
Sunny
26° /12° 1.1 mm 7
3 Sept. Sunny
Sunny
26° /13° 15.1 mm 7
4 Sept. Mist
Mist
25° /14° 7.1 mm 6
5 Sept. Sunny
Sunny
24° /12° 2.1 mm 6
6 Sept. Sunny
Sunny
25° /11° 0 mm 6
7 Sept. Sunny
Sunny
28° /12° 0.7 mm 8
8 Sept. Sunny
Sunny
27° /13° 7.5 mm 7
9 Sept. Sunny
Sunny
22° /12° 3 mm 6
10 Sept. Sunny
Sunny
25° /11° 0.2 mm 6
11 Sept. Partly cloudy
Partly cloudy
24° /10° 8.6 mm 6
12 Sept. Partly cloudy
Partly cloudy
21° /8° 1.1 mm 5
13 Sept. Moderate rain
Moderate rain
15° /8° 5.2 mm 4
14 Sept. Overcast
Overcast
17° /8° 0 mm 4
15 Sept. Mist
Mist
21° /8° 0 mm 6
16 Sept. Patchy light drizzle
Patchy light drizzle
20° /9° 0.6 mm 5
17 Sept. Partly cloudy
Partly cloudy
20° /10° 0.2 mm 6
18 Sept. Light rain shower
Light rain shower
19° /10° 11.8 mm 4
19 Sept. Patchy rain possible
Patchy rain possible
21° /8° 0.5 mm 5
20 Sept. Partly cloudy
Partly cloudy
22° /8° 0.4 mm 6
21 Sept. Patchy light drizzle
Patchy light drizzle
22° /9° 4.6 mm 5
22 Sept. Light rain shower
Light rain shower
18° /9° 9.1 mm 4
23 Sept. Patchy rain possible
Patchy rain possible
15° /7° 19 mm 4
24 Sept. Sunny
Sunny
18° /6° 0.1 mm 5
25 Sept. Sunny
Sunny
20° /5° 0 mm 6
26 Sept. Sunny
Sunny
18° /8° 26.1 mm 5
27 Sept. Overcast
Overcast
19° /7° 3.3 mm 5
28 Sept. Partly cloudy
Partly cloudy
17° /7° 5.1 mm 4
29 Sept. Sunny
Sunny
20° /7° 0 mm 5
30 Sept. Sunny
Sunny
20° /9° 2.7 mm 5
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Important Notice
Our weather forecast for Geneva 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 Geneva forecast closer to your planned date for the most up-to-date weather information.

Geneva in September - FAQ

What are the expected maximum and minimum temperatures in Geneva during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Geneva during September?
Moderate rainfall is anticipated in Geneva during September, with a total of 55.7 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Geneva during September?
The average wind speed in Geneva during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Geneva in September?

As you prepare for your trip to Geneva 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 Geneva, 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 Geneva

Explore the daily rainfall trends and prepare for Genevas September weather 💧

UV exposure in Geneva during September

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

Get accurate weather forecasts for Geneva, located at latitude 46.202 and longitude 6.146. Stay updated with localized weather information tailored for Geneva.

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