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Weather in Grindelwald for September 2025

Your guide to Grindelwald weather in September - trends and predictions
  • In general, the average temperature in Grindelwald at the beginning of September is 18.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.9 °C by the end of September.

  • Expect significant rainfall in Grindelwald during September, with an average of 16 rainy days.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/3°
Temperatures
Average wind speed
8 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Grindelwald in September average weather

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Temperatures trend during September in Grindelwald

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 Snow More
1 Sept. Patchy rain possible
Patchy rain possible
19° /2° 3 mm 0 cm
2 Sept. Patchy rain possible
Patchy rain possible
18° /3° 4.8 mm 0 cm
3 Sept. Sunny
Sunny
19° /3° 3.4 mm 0 cm
4 Sept. Overcast
Overcast
18° /4° 4 mm 0 cm
5 Sept. Sunny
Sunny
18° /4° 7.9 mm 0 cm
6 Sept. Sunny
Sunny
19° /3° 0.9 mm 0 cm
7 Sept. Patchy rain possible
Patchy rain possible
21° /4° 0.2 mm 0 cm
8 Sept. Patchy rain possible
Patchy rain possible
19° /5° 5.3 mm 0 cm
9 Sept. Patchy rain possible
Patchy rain possible
16° /6° 11.4 mm 0 cm
10 Sept. Patchy rain possible
Patchy rain possible
18° /3° 0.7 mm 0 cm
11 Sept. Patchy light rain with thunder
Patchy light rain with thunder
17° /2° 4.7 mm 0 cm
12 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
12° /2° 8.5 mm 0.6 cm
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
7° /2° 20.7 mm 6.1 cm
14 Sept. Thundery outbreaks possible
Thundery outbreaks possible
8° /1° 1.1 mm 0.8 cm
15 Sept. Thundery outbreaks possible
Thundery outbreaks possible
12° /-2° 0 mm 0 cm
16 Sept. Light rain shower
Light rain shower
13° /-2° 1.1 mm 0 cm
17 Sept. Sunny
Sunny
14° /0° 0.1 mm 0 cm
18 Sept. Light rain shower
Light rain shower
14° /0° 8.2 mm 0 cm
19 Sept. Patchy rain possible
Patchy rain possible
13° /0° 2.2 mm 0 cm
20 Sept. Light rain shower
Light rain shower
15° /0° 1.5 mm 0 cm
21 Sept. Patchy rain possible
Patchy rain possible
14° /1° 1.4 mm 0 cm
22 Sept. Light rain shower
Light rain shower
12° /2° 18.9 mm 0 cm
23 Sept. Light rain shower
Light rain shower
8° /-3° 9.5 mm 0 cm
24 Sept. Patchy rain possible
Patchy rain possible
10° /-3° 1.3 mm 0 cm
25 Sept. Sunny
Sunny
14° /-2° 0.2 mm 0 cm
26 Sept. Sunny
Sunny
13° /0° 7.9 mm 0 cm
27 Sept. Sunny
Sunny
14° /2° 3 mm 0 cm
28 Sept. Sunny
Sunny
11° /2° 6.7 mm 1.1 cm
29 Sept. Patchy rain possible
Patchy rain possible
14° /1° 0.1 mm 0 cm
30 Sept. Patchy rain possible
Patchy rain possible
14° /1° 2.1 mm 0 cm
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Important Notice
Our weather forecast for Grindelwald 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 Grindelwald forecast closer to your planned date for the most up-to-date weather information.

Grindelwald in September - FAQ

What are the expected maximum and minimum temperatures in Grindelwald during September?
During September, expect a variety of temperatures with highs around 17° and lows near 3°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grindelwald during September?
Significant rainfall exceeding 106.7 mm is expected in Grindelwald during September, occurring over more than 16 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Grindelwald during September?
The average wind speed in Grindelwald during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Grindelwald in September?

As you prepare for your trip to Grindelwald 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 Grindelwald, 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
    • 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

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Location coordinates Where is Grindelwald?

Get accurate weather forecasts for Grindelwald, located at latitude 46.624 and longitude 8.036. Stay updated with localized weather information tailored for Grindelwald.

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