Grindelwald
September
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.
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14
Dry days
16
Rainy days
0
Snow days
17°/3°
Temperatures
8 km/h
Avg max wind
76 %
Avg humidity
Grindelwald in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  19° | 2 18° | 3  19° | 4  18° | 5 18° | 6 19° | 7 21° |
| 8 19° | 9 16° | 10 18° | 11  17° | 12  12° | 13 7° | 14  8° |
| 15 12° | 16 13° | 17 14° | 18 14° | 19 13° | 20 15° | 21 14° |
| 22 12° | 23 8° | 24 10° | 25 14° | 26 13° | 27 14° | 28 11° |
| 29 14° | 30 14° |
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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. | Patchy rain possible | 19° /2° | 3 mm | 0 cm | |
| 2 Sept. | Patchy rain possible | 18° /3° | 4.8 mm | 0 cm | |
| 3 Sept. | Sunny | 19° /3° | 3.4 mm | 0 cm | |
| 4 Sept. | Overcast | 18° /4° | 4 mm | 0 cm | |
| 5 Sept. | Sunny | 18° /4° | 7.9 mm | 0 cm | |
| 6 Sept. | Sunny | 19° /3° | 0.9 mm | 0 cm | |
| 7 Sept. | Patchy rain possible | 21° /4° | 0.2 mm | 0 cm | |
| 8 Sept. | Patchy rain possible | 19° /5° | 5.3 mm | 0 cm | |
| 9 Sept. | Patchy rain possible | 16° /6° | 11.4 mm | 0 cm | |
| 10 Sept. | Patchy rain possible | 18° /3° | 0.7 mm | 0 cm | |
| 11 Sept. | Patchy light rain with thunder | 17° /2° | 4.7 mm | 0 cm | |
| 12 Sept. | Moderate or heavy rain shower | 12° /2° | 8.5 mm | 0.6 cm | |
| 13 Sept. | Moderate or heavy rain shower | 7° /2° | 20.7 mm | 6.1 cm | |
| 14 Sept. | Thundery outbreaks possible | 8° /1° | 1.1 mm | 0.8 cm | |
| 15 Sept. | Thundery outbreaks possible | 12° /-2° | 0 mm | 0 cm | |
| 16 Sept. | Light rain shower | 13° /-2° | 1.1 mm | 0 cm | |
| 17 Sept. | Sunny | 14° /0° | 0.1 mm | 0 cm | |
| 18 Sept. | Light rain shower | 14° /0° | 8.2 mm | 0 cm | |
| 19 Sept. | Patchy rain possible | 13° /0° | 2.2 mm | 0 cm | |
| 20 Sept. | Light rain shower | 15° /0° | 1.5 mm | 0 cm | |
| 21 Sept. | Patchy rain possible | 14° /1° | 1.4 mm | 0 cm | |
| 22 Sept. | Light rain shower | 12° /2° | 18.9 mm | 0 cm | |
| 23 Sept. | Light rain shower | 8° /-3° | 9.5 mm | 0 cm | |
| 24 Sept. | Patchy rain possible | 10° /-3° | 1.3 mm | 0 cm | |
| 25 Sept. | Sunny | 14° /-2° | 0.2 mm | 0 cm | |
| 26 Sept. | Sunny | 13° /0° | 7.9 mm | 0 cm | |
| 27 Sept. | Sunny | 14° /2° | 3 mm | 0 cm | |
| 28 Sept. | Sunny | 11° /2° | 6.7 mm | 1.1 cm | |
| 29 Sept. | Patchy rain possible | 14° /1° | 0.1 mm | 0 cm | |
| 30 Sept. | 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
September rainfall patterns in Grindelwald
Explore the daily rainfall trends and prepare for Grindelwalds September weather 💧
September snowfall in Grindelwald
Track daily snowfall levels and discover Grindelwald’s snowy potential this September ❄️
UV exposure in Grindelwald during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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