The 5 most scenic train journeys in Switzerland
Explore Switzerland's top 5 train journeys, featuring breathtaking Alpine views and engineering marvels like the Glacier Express and Bernina Express.
Thun (BERN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Thun.
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Climate overview of Thun
Thun, Canton of Bern, Switzerland, experiences significant temperature variation throughout the year. Summers bring daytime highs of 21°C (70°F) in July, while winters cool to 2°C (36°F) in January.
Rain/snowfall is high, totalling around 1796 mm (71 in) per year. July is the wettest month and January the driest. The city also experiences a distinct rainy season from May to August, with pleasant summers and cold winters. July is the sunniest month, averaging 7.3 hours of sunshine per day.
Thun Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Thun - and find the best time to visit.
Monthly Temperature in Thun
Depending on the time of the year, temperatures range from pleasant to chilly in Thun. Average maximum daytime temperatures range from a pleasant 21°C (70°F) in July, the warmest time of the year, to a chilly 2°C (36°F) during cooler months like January.
At night, you can expect temperatures ranging from 11°C (52°F) in July to around -6°C (21°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Thun
Thun has a relatively rain/snowy climate with high precipitation levels, averaging 1796 mm (71 in) of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 208 mm (8.2 in) of precipitation, spread over 15 rainy days.
In contrast, the driest month January experiences a drier climate, with about 114 mm (4.5 in) of snow/rainfall spread across 14 snowy/rainy days. For more details, please visit our Thun Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Thun
Seasonal changes in sunshine hours are quite dramatic in Thun. While July receives considerable daily sunshine with up to 7.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Interlaken, Switzerland (21 KM, 13 Miles).
Daily hours of sunshine
Data from: Interlaken, Switzerland (21 KM, 13 Miles).
Daily percentage of sunshine
Data from: Interlaken, Switzerland (21 KM, 13 Miles).
Humidity in Thun by Month
The relative humidity is high throughout the year in Thun.
The city experiences its highest humidity in November, reaching 83%. In April, the humidity drops to its lowest level at 70%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Interlaken, Switzerland (21 KM, 13 Miles).
Best Time to Visit Thun
For the most comfortable conditions available during the year, consider visiting Thun in August. Conditions are usually least comfortable in January, February, March, April, May, June, October, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
wet
Apr
wet
May
wet
Jun
very wet
Jul
mixed
Aug
good
Sep
mixed
Oct
wet
Nov
wet
Dec
cold
- Best overall: August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: A distinct rainy season from May to August, with pleasant summers and cold winters
- Coldest conditions: January, with freezing nights around -6°C (21°F).
Frequently asked questions about the climate in Thun
What is the best time to visit Thun?
August typically offers the most optimal weather in Thun. In contrast, January, February, March, April, May, June, October, November and December tend to have less optimal conditions. Thun has a distinct rainy season from May to August, with pleasant summers and cold winters.
What temperatures can I expect in Thun?
Daytime highs range from 2°C (36°F) in January to 21°C (70°F) in July. Nighttime lows range from -6°C (21°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Thun get?
Annual rainfall is around 1796 mm (71 in). July is the wettest month with 208 mm (8.2 in), while January is the driest with 114 mm (4.5 in).
How sunny is Thun?
Thun receives around 1,580 hours of sunshine per year. July is the sunniest month with 219 hours, while December is the cloudiest with just 51 hours.
Thun 3-Day Forecast
Thun on the map
Thun is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Zürich
20°C (68°F) Crans-Montana15°C (59°F) Engelberg
15°C (59°F) Nendaz15°C (59°F) Saas-Fee12°C (54°F) Davos13°C (55°F) Grindelwald13°C (55°F) Zermatt11°C (52°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most scenic train journeys in Switzerland
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