Thun in September
6.1out of 10
Possible, with caveats
Mild: highs around 16°C. Frequent rain: about 14 rainy days.
16°CAvg high
7°CAvg low
14Rainy days (137 mm)
12:19 hDaylight
07:14Sunrise · 19:33 Sunset
Why this score
- Mild: highs around 16°C
- Frequent rain: about 14 rainy days
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±3.5 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -5°C | 107 mm | 13 | – | – | 3.5 |
| February | 3°C | -5°C | 100 mm | 12 | – | – | 3.9 |
| March | 7°C | -2°C | 108 mm | 14 | – | – | 4.5 |
| April | 11°C | 1°C | 120 mm | 15 | – | – | 5.1 |
| May | 15°C | 6°C | 184 mm | 18 | – | – | 5.1 |
| June | 19°C | 9°C | 181 mm | 18 | – | – | 5.7 |
| July | 21°C | 11°C | 193 mm | 17 | – | – | 6.1 |
| August | 20°C | 11°C | 180 mm | 16 | – | – | 6.2 |
| September | 16°C | 7°C | 137 mm | 14 | – | – | 6.1 |
| October | 12°C | 4°C | 112 mm | 12 | – | – | 5.7 |
| November | 6°C | -1°C | 117 mm | 13 | – | – | 4.4 |
| December | 3°C | -4°C | 122 mm | 14 | – | – | 3.5 |
Frequently asked questions
How hot is Thun in September?
Daytime highs average 16°C and nights about 7°C.
When is the best time to visit Thun?
The best months are August, July, September, June.