Interlaken
September
Weather in Interlaken for September 2027
Your guide to Interlaken weather in September - trends and predictions
In general, the average temperature in Interlaken at the beginning of September is 18.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.9 °C by the end of September.
The climate of Interlaken in September is notably wet, with an average of 14 rainy days, and a total of 124 mm of precipitation.
Is September a good time to visit Interlaken? check out the best time to travel to Interlaken page.
Temperatures
Rain 🌧️
More
16
Dry days
14
Rainy days
0
Snow days
15°/7°
Temperatures
8 km/h
Avg max wind
77 %
Avg humidity
Interlaken Weather September
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Temperatures trend during September in Interlaken
See the weather trend as well as the moving average line
September weather in Interlaken day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Light rain | 17° /8° | 5.4 mm | 5 | |
| 2 Sept. | Light rain | 17° /8° | 4.5 mm | 4 | |
| 3 Sept. |  Patchy rain possible | 18° /9° | 2.3 mm | 5 | |
| 4 Sept. | Light rain | 19° /10° | 6.4 mm | 5 | |
| 5 Sept. | Light rain | 18° /10° | 2.7 mm | 5 | |
| 6 Sept. |  Sunny | 19° /9° | 0.4 mm | 5 | |
| 7 Sept. | Patchy rain possible | 21° /11° | 1.3 mm | 6 | |
| 8 Sept. | Light rain | 19° /11° | 5.5 mm | 5 | |
| 9 Sept. | Light rain | 16° /9° | 9.6 mm | 3 | |
| 10 Sept. | Light rain | 15° /8° | 2.6 mm | 3 | |
| 11 Sept. | Patchy rain possible | 16° /8° | 2 mm | 4 | |
| 12 Sept. | Light rain | 15° /7° | 2.7 mm | 4 | |
| 13 Sept. | Light rain | 15° /8° | 6.5 mm | 3 | |
| 14 Sept. | Light rain | 15° /8° | 3.5 mm | 3 | |
| 15 Sept. |  Moderate or heavy rain shower | 16° /9° | 5.5 mm | 4 | |
| 16 Sept. | Moderate or heavy rain shower | 14° /7° | 9.2 mm | 3 | |
| 17 Sept. | Patchy rain possible | 13° /6° | 2.3 mm | 3 | |
| 18 Sept. | Patchy rain possible | 15° /7° | 2.2 mm | 4 | |
| 19 Sept. | Light rain | 14° /7° | 4.5 mm | 3 | |
| 20 Sept. | Patchy rain possible | 15° /7° | 1 mm | 3 | |
| 21 Sept. | Light rain | 15° /6° | 2.7 mm | 3 | |
| 22 Sept. |  Moderate rain | 13° /5° | 10.9 mm | 3 | |
| 23 Sept. | Light rain | 13° /5° | 3.8 mm | 3 | |
| 24 Sept. | Patchy rain possible | 12° /5° | 2.4 mm | 3 | |
| 25 Sept. | Patchy rain possible | 14° /5° | 2.4 mm | 4 | |
| 26 Sept. | Light rain | 14° /7° | 6 mm | 3 | |
| 27 Sept. | Light rain | 13° /6° | 3.9 mm | 3 | |
| 28 Sept. | Light rain | 13° /6° | 8.2 mm | 3 | |
| 29 Sept. | Light rain | 13° /6° | 2.5 mm | 3 | |
| 30 Sept. | Patchy rain possible | 13° /6° | 1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Interlaken 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 Interlaken forecast closer to your planned date for the most up-to-date weather information.
Change Month
Interlaken in September - FAQ
What are the expected maximum and minimum temperatures in Interlaken during September?
During September, expect a variety of temperatures with highs around 15° and lows near 7°, suitable for diverse activities and preferences.
How much rainfall should be expected in Interlaken during September?
Significant rainfall exceeding 124 mm is expected in Interlaken during September, occurring over more than 14 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Interlaken during September?
The average wind speed in Interlaken during September is 8 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Interlaken
Explore the daily rainfall trends and prepare for Interlakens September weather 💧
Typically, Interlaken has 14 rainy days in September with a total of 124 mm of rainfall.
UV exposure in Interlaken during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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