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December Weather in Interlaken, United States

Last updated: June 24, 2025

In December, the average temperature in Interlaken, United States is a mild 10°C (51°F), with minimums dipping to 0°C (33°F) and reaching a comfortable maximum of 24°C (75°F). Precipitation amounts to 92 mm (3.6 in) spread over 9 days, while the average humidity hovers around a brisk 80%.

December Temperature in Interlaken

In December in Interlaken, the average temperature is 10°C (51°F), with maximums reaching 24°C (75°F) and minimums dropping as low as 0°C (33°F). This variation makes it advisable for travelers to pack layers to stay comfortable throughout the day.

December Weather in Interlaken: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Interlaken, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Interlaken, December typically has an average temperature of 10°C (51°F), with highs reaching up to 24°C (75°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec515254565862636465615551
Data source: Temperature data for Interlaken generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Interlaken

In Interlaken in December, the precipitation amount is 92 mm (3.6 in) during 9 days, indicating a relatively wet period for the region.

December Precipitation Trends in Interlaken

The chart displays monthly precipitation patterns in Interlaken, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Interlaken, December typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1221058832191112224292
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Interlaken

In Interlaken in December, humidity is 80%. With an average temperature of 10°C (51°F), this humidity feels like a damp layer clinging to the skin, making outdoor activities uncomfortable and requiring travelers to dress in layers to cope with the chill and moisture in the air.

December Average Humidity in Interlaken

This chart illustrates the average monthly humidity levels in Interlaken, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Interlaken is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Interlaken

In Interlaken in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Interlaken, you can check the information here.

Maximum UV Index Levels in Interlaken for December

The chart shows the monthly maximum UV Index (UVI) for Interlaken in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Interlaken typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec4589111111109753
Data source: Interlaken December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Interlaken Compares to Other Months

Weather in Interlaken varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Interlaken, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Interlaken, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (51°F)122 mm (4.8 inches)82%moderate
February Weather11°C (52°F)105 mm (4.1 inches)84%moderate
March Weather12°C (54°F)88 mm (3.5 inches)82%very high
April Weather13°C (57°F)32 mm (1.2 inches)78%very high
May Weather15°C (59°F)19 mm (0.7 inches)71%extreme
June Weather17°C (62°F)1 mm (0.1 inches)64%extreme
July Weather17°C (63°F)1 mm (0.0 inches)58%extreme
August Weather18°C (65°F)1 mm (0.0 inches)54%very high
September Weather18°C (65°F)2 mm (0.1 inches)55%very high
October Weather16°C (62°F)22 mm (0.9 inches)62%high
November Weather13°C (56°F)42 mm (1.7 inches)78%moderate
December Weather10°C (51°F)92 mm (3.6 inches)80%moderate

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