The region: Lake Thun region
Lake Thun region (Bern): the weather above is computed at the centre of the region (560 m). Below you will find the forecasts for the 15 municipalities, 2 ski resorts, 1 lakes and 3 passes or summits within 10 km — the terrain makes the weather vary a lot from one valley to the next: use the page of the exact place.
Climate of Lake Thun region: 1991–2020 normals
In Lake Thun region (560 m), the mean annual temperature is 9.7 °C. The warmest month is July (18.5 °C on average) and the coldest January (1.2 °C). About 1150 mm of precipitation falls per year, peaking in July (143 mm) with a minimum in February (65 mm). The sun shines for about 1626 hours a year, mostly in July (223 h). On average there are 92 frost days and 8 hot days (≥ 30 °C) per year. The mean monthly maximum reaches 30.5 °C and the absolute minimum −8.9 °C.
Mean monthly precipitation (mm) — bar height relative to the wettest month.
| Month | Mean T | Abs. max | Abs. min | Precip. (mm) | Sunshine (h) | Frost days | Summer days |
|---|---|---|---|---|---|---|---|
| Jan | 1.2 °C | 12.5 °C | −8.9 °C | 71 | 67 | 24 | 0 |
| Feb | 1.8 °C | 14.0 °C | −8.7 °C | 65 | 82 | 21 | 0 |
| Mar | 5.5 °C | 18.4 °C | −5.4 °C | 71 | 129 | 12 | 0 |
| Apr | 9.1 °C | 21.9 °C | −1.6 °C | 80 | 164 | 3 | 0 |
| May | 13.2 °C | 26.2 °C | 2.8 °C | 119 | 183 | 0 | 3 |
| Jun | 16.7 °C | 29.7 °C | 6.7 °C | 124 | 200 | 0 | 11 |
| Jul | 18.5 °C | 30.5 °C | 9.3 °C | 143 | 223 | 0 | 15 |
| Aug | 18.1 °C | 30.0 °C | 8.5 °C | 141 | 199 | 0 | 14 |
| Sep | 14.4 °C | 25.4 °C | 5.1 °C | 91 | 152 | 0 | 3 |
| Oct | 10.3 °C | 21.4 °C | 0.5 °C | 78 | 103 | 1 | 0 |
| Nov | 5.2 °C | 16.8 °C | −4.6 °C | 78 | 68 | 10 | 0 |
| Dec | 2.0 °C | 12.6 °C | −8.2 °C | 89 | 56 | 22 | 0 |
| Year | 9.7 °C | 30.5 °C | −8.9 °C | 1150 | 1626 | 92 | 46 |
Source: MeteoSwiss open data (1991–2020 normals) — stations Interlaken (12 km, 578 m), Adelboden (24 km, 1321 m), Jungfraujoch (25 km, 3571 m), adjusted to the elevation of Lake Thun region (560 m) using a 0.55 °C/100 m lapse rate. Indicative, rounded values.
Municipalities in the region
- Krattigen 3 km · 842 m
- Aeschi bei Spiez 4 km · 764 m
- Wimmis 4 km · 792 m
- Reichenbach im Kandertal 6 km · 1433 m
- Beatenberg 6 km · 1649 m
- Därligen 6 km · 867 m
- Leissigen 6 km · 1088 m
- Oberhofen am Thunersee 7 km · 628 m
- Spiez 8 km · 652 m
- Heiligenschwendi 9 km · 1044 m
- Reutigen 9 km · 751 m
- Unterseen 9 km · 786 m
- Teuffenthal (BE) 9 km · 1010 m
- Hilterfingen 10 km · 728 m
- Diemtigen 10 km · 960 m
⛷️ Ski resorts
- Aeschi / Aeschiried 860–1500 m
- Beatenberg 1150–1950 m
🌊 Lakes
- Lake Thun 558 m
⛰️ Passes and summits
- Niederhorn 1963 m
- Niesen 2362 m
- Harder Kulm 1322 m
📍 Places to visit
Frequently asked questions about the weather: Lake Thun region
What is the weather like in Lake Thun region today?
The weather at the top of the page gives conditions at the centre of the region (560 m); for a specific town pick it in the “Municipalities in the region” list — each page has its own hourly and 15-day forecast.
What is the climate of Lake Thun region?
At the centre of the region (560 m) the mean annual temperature is 9.7 °C with 1150 mm of precipitation a year; the warmest month is July (18.5 °C) and the coldest January (1.2 °C). Valleys and summits differ markedly.
What is the warmest month in Lake Thun region?
The warmest month in Lake Thun region is July, averaging 18.5 °C (1991–2020 normal). The coldest is January at 1.2 °C.
How much does it rain in Lake Thun region per year?
Lake Thun region receives about 1150 mm of precipitation a year. The wettest month is July (143 mm), the driest February (65 mm).
When is the best time to visit Lake Thun region?
For warmth and sunshine: July (18.5 °C on average, 223 h of sun). The coldest month is January (1.2 °C). Check the 15-day forecast above for your dates.