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Thun (BERN) Weather and Climate: A Comprehensive Guide

The temperature in Thun can vary greatly throughout the year. The temperatures shift from pleasant to cold. It also has a notably wet climate with much precipitation. Now, let’s explore all the climate details to give you a full picture.

Average maximum day and minimum night temperature

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 in July, the warmest time of the year, to a chilly 2°C during cooler months like January.

At night, temperatures typically drop to an average of around -6°C during these months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Thun has a relatively rain/snowy climate with high precipitation levels, averaging 1796 mm of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. July brings wetter days averaging 208 mm of precipitation, spread over 15 rainy days.

In contrast, January experiences a drier climate, with about 114 mm of snow/rainfall spread across 14 snowy/rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

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).

Forecast for Thun (BERN)

Wed   Jan 15
4°C | -6°C
NW 3 m/s
almost clear and no rain

almost clear and no rain

Thu   Jan 16
3°C | -4°C
N 2 m/s
partly cloudy and no rain

partly cloudy and no rain

Fri   Jan 17
2°C | -6°C
NW 2 m/s
almost clear and no rain

almost clear and no rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Thun in Switzerland

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which months have the greatest rainfall in Thun?
    Most rainfall (rainy season) is seen in May, June, July, August and September.
  • Which is the warmest month in Thun?
    July has an average maximum temperature of 21°C and is the warmest month of the year.
  • Which is the coldest month in Thun?
    The coldest month is January with an average maximum temperature of 2°C.
  • Which is the wettest month in Thun?
    July tops the wettest month list with 208 mm of rainfall.
  • Which is the driest month in Thun?
    January is the driest month with 114 mm of precipitation.
  • Which is the sunniest month in Thun?
    July is the sunniest month with an average of 219 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.