Weather in Bern for September 2025
In general, the average temperature in Bern at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17 °C by the end of September.
Bern experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 97.1 mm.
Is September a good time to visit Bern? check out the best time to travel to Bern page.
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Bern in September average weather
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  25° | 3  25° | 4 24° | 5  25° | 6 25° | 7 26° |
| 8 25° | 9 21° | 10 22° | 11 22° | 12 21° | 13 20° | 14  18° |
| 15  20° | 16 20° | 17 16° | 18 17° | 19 16° | 20 18° | 21 19° |
| 22 18° | 23 17° | 24 18° | 25 19° | 26 17° | 27 17° | 28 15° |
| 29 17° | 30 16° |
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Temperatures trend during September in Bern
September weather day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 24° /9° | 1.5 mm | 6 | |
| 2 Sept. | Patchy rain possible | 25° /10° | 1.8 mm | 6 | |
| 3 Sept. | Overcast | 25° /11° | 3.8 mm | 6 | |
| 4 Sept. | Patchy rain possible | 24° /11° | 1.5 mm | 6 | |
| 5 Sept. | Sunny | 25° /11° | 0.8 mm | 6 | |
| 6 Sept. | Sunny | 25° /11° | 0.1 mm | 6 | |
| 7 Sept. | Sunny | 26° /11° | 0.7 mm | 7 | |
| 8 Sept. | Sunny | 25° /12° | 5.5 mm | 6 | |
| 9 Sept. | Overcast | 21° /11° | 2.9 mm | 5 | |
| 10 Sept. | Patchy rain possible | 22° /11° | 0.9 mm | 5 | |
| 11 Sept. | Patchy rain possible | 22° /10° | 4.1 mm | 5 | |
| 12 Sept. | Patchy rain possible | 21° /8° | 2.2 mm | 5 | |
| 13 Sept. | Partly cloudy | 20° /9° | 2.3 mm | 5 | |
| 14 Sept. | Cloudy | 18° /9° | 2.4 mm | 4 | |
| 15 Sept. | Moderate rain at times | 20° /8° | 5 mm | 5 | |
| 16 Sept. | Patchy rain possible | 20° /8° | 4.5 mm | 5 | |
| 17 Sept. | Patchy rain possible | 16° /8° | 2.9 mm | 4 | |
| 18 Sept. | Overcast | 17° /7° | 4.9 mm | 4 | |
| 19 Sept. | Light rain shower | 16° /7° | 5.5 mm | 4 | |
| 20 Sept. | Patchy rain possible | 18° /6° | 0.6 mm | 5 | |
| 21 Sept. | Sunny | 19° /6° | 1.4 mm | 5 | |
| 22 Sept. | Partly cloudy | 18° /6° | 4.7 mm | 5 | |
| 23 Sept. | Sunny | 17° /5° | 2 mm | 5 | |
| 24 Sept. | Sunny | 18° /6° | 1.8 mm | 5 | |
| 25 Sept. | Partly cloudy | 19° /5° | 0.9 mm | 5 | |
| 26 Sept. | Patchy rain possible | 17° /7° | 14.4 mm | 4 | |
| 27 Sept. | Overcast | 17° /7° | 3.8 mm | 4 | |
| 28 Sept. | Patchy rain possible | 15° /7° | 10.7 mm | 4 | |
| 29 Sept. | Patchy rain possible | 17° /6° | 3.1 mm | 4 | |
| 30 Sept. | Patchy rain possible | 16° /6° | 0.4 mm | 4 | |
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Guide for Bern in September
In Bern, Switzerland, September marks the transition from summer to autumn, bringing about a noticeable change in the weather. At the beginning of the month, the average temperature hovers around 17°, with pleasant, mild conditions.
The days are still relatively long, providing ample opportunity for outdoor activities and sightseeing. However, as the month progresses, the temperatures gradually begin to drop.
By the end of September, the average temperature in Bern decreases to around 13°, signaling the onset of cooler autumn weather. Visitors can expect to experience a mix of sunny days and occasional rainfall as the city transitions into the fall season.
It's advisable to pack layers and a light jacket to stay comfortable throughout the day, especially as the evenings become cooler.
Overall, September in Bern offers a beautiful blend of late summer warmth and the beginnings of autumn, making it an ideal time to explore the city's charming streets, parks, and historical landmarks.
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Bern in September - FAQ
What to pack to Bern in September?
As you prepare for your trip to Bern 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 Bern, 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 Bern
UV exposure in Bern during September
Quick links
Where is Bern?Get accurate weather forecasts for Bern, located at latitude 46.948 and longitude 7.447. Stay updated with localized weather information tailored for Bern.