Grindelwald
September
Weather in Grindelwald for September 2025
Your guide to Grindelwald weather in September - trends and predictions
With an average of 4 snowy days, Grindelwald usually enjoys a light touch of snow in September.
In general, the average temperature in Grindelwald at the beginning of September is 19.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13 °C by the end of September.
Snow Forecast ❄️
Temperatures
2
Dry days
24
Rainy days
4
Snow days
15°/5°
Temperatures
8 km/h
Avg max wind
79 %
Avg humidity
Grindelwald in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2  19° | 3  19° | 4 19° | 5 20° | 6 20° | 7 21° |
| 8 19° | 9  17° | 10 17° | 11  17° | 12 16° | 13 15° | 14 14° |
| 15 15° | 16 14° | 17 13° | 18 14° | 19 12° | 20 13° | 21  14° |
| 22 13° | 23 13° | 24 13° | 25 15° | 26 14° | 27  13° | 28 12° |
| 29 12° | 30 12° |
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Temperatures trend during September in Grindelwald
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Sept. | Sunny | 19° /5° | 1.5 mm | 0 cm | |
| 2 Sept. | Patchy rain possible | 19° /6° | 2.6 mm | 0 cm | |
| 3 Sept. | Cloudy | 19° /7° | 2.4 mm | 0 cm | |
| 4 Sept. | Patchy rain possible | 19° /7° | 2.1 mm | 0 cm | |
| 5 Sept. | Cloudy | 20° /7° | 4.1 mm | 0 cm | |
| 6 Sept. | Cloudy | 20° /7° | 0.8 mm | 0 cm | |
| 7 Sept. | Sunny | 21° /7° | 1.7 mm | 0 cm | |
| 8 Sept. | Sunny | 19° /8° | 6.6 mm | 0 cm | |
| 9 Sept. | Heavy rain at times | 17° /8° | 7.3 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 17° /6° | 2.6 mm | 0 cm | |
| 11 Sept. | Moderate rain at times | 17° /5° | 2.5 mm | 0 cm | |
| 12 Sept. | Patchy rain possible | 16° /5° | 4.3 mm | 0.3 cm | |
| 13 Sept. | Patchy rain possible | 15° /6° | 10.5 mm | 3 cm | |
| 14 Sept. | Moderate rain at times | 14° /6° | 3.2 mm | 0.4 cm | |
| 15 Sept. | Moderate or heavy rain shower | 15° /5° | 6.5 mm | 0 cm | |
| 16 Sept. | Moderate or heavy rain shower | 14° /4° | 5.9 mm | 0 cm | |
| 17 Sept. | Patchy rain possible | 13° /3° | 3.4 mm | 0 cm | |
| 18 Sept. | Cloudy | 14° /3° | 4.2 mm | 0 cm | |
| 19 Sept. | Patchy rain possible | 12° /3° | 6.7 mm | 0 cm | |
| 20 Sept. | Moderate rain at times | 13° /2° | 1.2 mm | 0 cm | |
| 21 Sept. | Partly cloudy | 14° /2° | 0.7 mm | 0 cm | |
| 22 Sept. | Sunny | 13° /3° | 9.5 mm | 0 cm | |
| 23 Sept. | Sunny | 13° /1° | 4.8 mm | 0 cm | |
| 24 Sept. | Sunny | 13° /2° | 2.9 mm | 0 cm | |
| 25 Sept. | Moderate rain at times | 15° /2° | 2.9 mm | 0 cm | |
| 26 Sept. | Moderate rain at times | 14° /3° | 5.5 mm | 0 cm | |
| 27 Sept. | Overcast | 13° /3° | 4.9 mm | 0 cm | |
| 28 Sept. | Patchy rain possible | 12° /4° | 12.3 mm | 0.6 cm | |
| 29 Sept. | Patchy rain possible | 12° /3° | 3.7 mm | 0 cm | |
| 30 Sept. | Patchy rain possible | 12° /2° | 1.7 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 15° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grindelwald during September?
Significant rainfall exceeding 128.9 mm is expected in Grindelwald during September, occurring over more than 24 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Grindelwald in September 2025?
Grindelwald experiences an average snowfall of 4.3025 cm during September, occurring over 4 days.
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.
Grindelwald snow forecast September 2025
Track daily snowfall levels and discover Grindelwald’s snowy potential this September ❄️
September rainfall patterns in Grindelwald
Explore the daily rainfall trends and prepare for Grindelwalds September weather 💧
UV exposure in Grindelwald during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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