Interlaken Weather in December
What's the weather like in Interlaken (Bern) in December 2025?
The climate in Interlaken during December can be summarized as cold and a little damp.
December is in the winter in Interlaken and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a freezing 1°C (34°F), whilst at night -4°C (24°F) is normal.
| Daytime temperature | 1.1°C 34°F |
|---|---|
| Nightly temperature | -4.3°C 24.3°F |
| Average temperature | -1.6°C 29.1°F |
| Daily sunshine | 3 hrs |
| Avg rainfall | 86 mm 3.4 ins |
| Rainy days | 15 days |
| Sea temperature | 12.8°C 55°F |
| Humidity | 75% |
| Windspeed | 12.2kph 8 mph |
On average December is the 5th driest month of the year in Interlaken with around 86mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 3 hours of sunshine per day.
December temperatures in Interlaken
December rainfall
December hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Interlaken in December 2025.
Other monthly averages
Best places to visit in December
Interlaken weather stats
| Hottest month: | July | 18.3°C 64.9°F |
|---|---|---|
| Driest month: | February | 80mm 3.1ins |
| Sunniest month: | July | 7.5hrs |
| Coldest month: | January | -0.3°C 31.5°F |
| Wettest month: | August | 153mm 6ins |
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