Biel/Bienne
September
Weather in Biel/Bienne for September 2026
Your guide to Biel/Bienne weather in September - trends and predictions
In general, the average temperature in Biel/Bienne at the beginning of September is 23.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.7 °C by the end of September.
Biel/Bienne in September brings notable rainfall, with an average of 18 rainy days and a total precipitation of 112.1 mm.
Temperatures
Rain 🌧️
12
Dry days
18
Rainy days
0
Snow days
20°/9°
Temperatures
10 km/h
Avg max wind
78 %
Avg humidity
Biel/Bienne Weather September
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Temperatures trend during September in Biel/Bienne
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September weather in Biel/Bienne day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Partly cloudy | 23° /12° | 7.4 mm | 5 | |
| 2 Sept. |  Sunny | 24° /11° | 4.7 mm | 6 | |
| 3 Sept. | Partly cloudy | 24° /12° | 3.6 mm | 6 | |
| 4 Sept. |  Mist | 23° /13° | 9.7 mm | 5 | |
| 5 Sept. |  Light rain shower | 22° /11° | 4.4 mm | 5 | |
| 6 Sept. | Mist | 24° /10° | 0 mm | 6 | |
| 7 Sept. | Sunny | 27° /11° | 0 mm | 6 | |
| 8 Sept. | Sunny | 24° /13° | 3.4 mm | 5 | |
| 9 Sept. | Sunny | 19° /11° | 11.7 mm | 5 | |
| 10 Sept. | Sunny | 22° /10° | 1.5 mm | 5 | |
| 11 Sept. | Partly cloudy | 20° /11° | 6.6 mm | 5 | |
| 12 Sept. |  Thundery outbreaks possible | 20° /9° | 1.5 mm | 4 | |
| 13 Sept. | Light rain shower | 16° /8° | 4.7 mm | 4 | |
| 14 Sept. | Patchy rain possible | 17° /8° | 5.5 mm | 4 | |
| 15 Sept. | Mist | 21° /8° | 0.9 mm | 5 | |
| 16 Sept. | Light rain shower | 19° /8° | 0.4 mm | 5 | |
| 17 Sept. | Partly cloudy | 19° /8° | 0.2 mm | 5 | |
| 18 Sept. |  Moderate or heavy rain shower | 19° /7° | 5.4 mm | 5 | |
| 19 Sept. | Patchy rain possible | 21° /8° | 0.4 mm | 5 | |
| 20 Sept. | Patchy rain possible | 23° /9° | 0.5 mm | 6 | |
| 21 Sept. | Light rain shower | 22° /9° | 10.4 mm | 5 | |
| 22 Sept. | Light rain shower | 17° /8° | 8.4 mm | 4 | |
| 23 Sept. | Light rain shower | 13° /6° | 5.9 mm | 3 | |
| 24 Sept. | Sunny | 15° /5° | 0.8 mm | 4 | |
| 25 Sept. | Sunny | 17° /5° | 0.6 mm | 4 | |
| 26 Sept. | Sunny | 16° /6° | 25.2 mm | 4 | |
| 27 Sept. |  Overcast | 17° /6° | 2.5 mm | 4 | |
| 28 Sept. | Overcast | 16° /5° | 1.9 mm | 4 | |
| 29 Sept. | Sunny | 18° /6° | 0 mm | 5 | |
| 30 Sept. | Sunny | 18° /7° | 0.5 mm | 5 | |
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Important Notice
Our weather forecast for Biel/Bienne 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 Biel/Bienne forecast closer to your planned date for the most up-to-date weather information.
Change Month
Biel/Bienne in September - FAQ
What are the expected maximum and minimum temperatures in Biel/Bienne during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Biel/Bienne during September?
Significant rainfall exceeding 112.1 mm is expected in Biel/Bienne during September, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Biel/Bienne during September?
The average wind speed in Biel/Bienne during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Biel/Bienne
Explore the daily rainfall trends and prepare for Biel/Biennes September weather 💧
UV exposure in Biel/Bienne during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Biel/Bienne?Get accurate weather forecasts for Biel/Bienne, located at latitude 47.137 and longitude 7.246. Stay updated with localized weather information tailored for Biel/Bienne.
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