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January Weather in Interlaken, United States

Last updated: June 24, 2025

In January, the average temperature in Interlaken, United States hovers around -3°C (27°F). You can expect a chilly range where the minimum can drop to -24°C (-11°F), while the maximum peaks at 17°C (64°F). Prepare for moisture, as precipitation amounts average around 76 mm (3.0 in) over 12 days, contributing to a high average humidity of 90%. Stay warm and dry!

January Temperature in Interlaken

In January in Interlaken, the average temperature is -3°C (27°F). Maximums can reach 17°C (64°F), while minimums can drop as low as -24°C (-11°F). Travelers should be prepared for a wide temperature range and dress accordingly for a comfortable experience.

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

The chart illustrates January 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, January typically has an average temperature of -3°C (27°F), with highs reaching up to 17°C (64°F) and lows dropping to around -24°C (-11°F).
JanFebMarAprMayJunJulAugSepOctNovDec262835465867727164543932
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.

January Precipitation in Interlaken

In Interlaken in January, the total precipitation amount is 76 mm (3.0 in), occurring over the course of 12 days.

January Precipitation Trends in Interlaken

The chart displays monthly precipitation patterns in Interlaken, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Interlaken, January typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec7685801121199013586821448992
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Interlaken

In Interlaken in January humidity is 90%. With an average temperature of -3°C (27°F), this humidity feels like a bitter chill that seeps into your bones, making travel uncomfortable and necessitating extra layers to combat both the cold and the dampness in the air.

January Average Humidity in Interlaken

This chart illustrates the average monthly humidity levels in Interlaken, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Interlaken is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Interlaken

In Interlaken in January, 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 January

The chart shows the monthly maximum UV Index (UVI) for Interlaken in January, 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 January, the maximum UV index in Interlaken typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Interlaken January 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 January 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 January’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 January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (27°F)76 mm (3.0 inches)90%moderate
February Weather-2°C (28°F)85 mm (3.4 inches)90%moderate
March Weather1°C (35°F)80 mm (3.2 inches)87%high
April Weather8°C (46°F)111 mm (4.4 inches)88%very high
May Weather14°C (58°F)119 mm (4.7 inches)82%very high
June Weather19°C (67°F)90 mm (3.5 inches)79%very high
July Weather22°C (72°F)135 mm (5.3 inches)78%very high
August Weather21°C (71°F)86 mm (3.4 inches)76%very high
September Weather18°C (64°F)82 mm (3.2 inches)78%very high
October Weather12°C (54°F)144 mm (5.7 inches)84%high
November Weather4°C (39°F)89 mm (3.5 inches)89%moderate
December Weather0°C (32°F)91 mm (3.6 inches)86%low

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