Bern
September
Weather in Bern for September 2026
Your guide to Bern weather in September - trends and predictions
Until now, September 2026 in Bern has been nearly identical to the historical average, with a temperature of 23.5 °C (showing only a slight deviation of 0.1 °C).
Expect cooler weather in the next days in Bern with the forecast suggesting a temperature of 19.8 °C, lower than the historical average.
In general, the average temperature in Bern at the beginning of September is 24.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.
The climate of Bern in September is notably wet, with an average of 12 rainy days, and a total of 113.8 mm of precipitation.
Temperatures
Rain 🌧️
18
Dry days
12
Rainy days
0
Snow days
19°/9°
Temperatures
9 km/h
Avg max wind
80 %
Avg humidity
Bern Weather September
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What’s the Weather Like in Bern This September?
Discover the average temperatures and weather trends across Bern’s cities this September.
Temperatures trend during September in Bern
See the weather trend as well as the moving average line
September weather in Bern day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 23° /10° | 3.4 mm | 6 | |
| 2 Sept. |  Patchy rain possible | 24° /10° | 3.9 mm | 5 | |
| 3 Sept. | Partly cloudy | 25° /11° | 2.6 mm | 6 | |
| 4 Sept. |  Sunny | 25° /12° | 5.9 mm | 6 | |
| 5 Sept. | Sunny | 24° /11° | 2.4 mm | 6 | |
| 6 Sept. | Sunny | 25° /10° | 0 mm | 6 | |
| 7 Sept. | Sunny | 26° /12° | 0.5 mm | 6 | |
| 8 Sept. | Sunny | 25° /13° | 4.7 mm | 6 | |
| 9 Sept. | Light rain shower | 20° /11° | 8.5 mm | 4 | |
| 10 Sept. | Patchy rain possible | 20° /10° | 1.3 mm | 5 | |
| 11 Sept. | Patchy rain possible | 21° /9° | 2.9 mm | 5 | |
| 12 Sept. | Patchy rain possible | 21° /8° | 1.5 mm | 5 | |
| 13 Sept. |  Overcast | 23° /12° | 0 mm | 5.2 | |
| 14 Sept. | Sunny | 24° /14° | 0.1 mm | 5.5 | |
| 15 Sept. | Sunny | 26° /12° | 0 mm | 5.6 | |
| 16 Sept. | Sunny | 22° /12° | 2.7 mm | 5 | |
| 17 Sept. | Partly cloudy | 18° /10° | 6.1 mm | 5 | |
| 18 Sept. | Overcast | 18° /11° | 0 mm | 5 | |
| 19 Sept. | Sunny | 20° /11° | 0 mm | 5 | |
| 20 Sept. | Overcast | 21° /12° | 0 mm | 6 | |
| 21 Sept. | Overcast | 20° /12° | 0 mm | 5 | |
| 22 Sept. | Sunny | 18° /11° | 0 mm | 5 | |
| 23 Sept. | Overcast | 13° /8° | 7.9 mm | 2 | |
| 24 Sept. | Sunny | 18° /10° | 0 mm | 5 | |
| 25 Sept. | Overcast | 17° /11° | 0 mm | 5 | |
| 26 Sept. |  Mist | 19° /12° | 6.1 mm | 4 | |
| 27 Sept. | Overcast | 17° /6° | 3.3 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /6° | 8.6 mm | 4 | |
| 29 Sept. | Patchy rain possible | 17° /6° | 2.5 mm | 4 | |
| 30 Sept. | Patchy rain possible | 16° /6° | 0.3 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Bern 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 Bern forecast closer to your planned date for the most up-to-date weather information.
Change Month
Bern in September - FAQ
What are the expected maximum and minimum temperatures in Bern during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Bern during September?
Significant rainfall exceeding 113.8 mm is expected in Bern during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bern during September?
The average wind speed in Bern during September is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Bern
Explore the daily rainfall trends and prepare for Berns September weather 💧
Typically, Bern has 12 rainy days in September with a total of 113.8 mm of rainfall.
UV exposure in Bern during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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