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May Weather in Interlaken, United States

Last updated: June 24, 2025

In May, the average temperature in Interlaken, United States hovers around 14°C (58°F). However, be prepared for fluctuations, as temperatures can dip to a minimum of -2°C (28°F) or rise to a sizzling 32°C (89°F). Expect 119 mm (4.7 in) of precipitation spread over approximately 15 days, contributing to an average humidity of 82%. Whether you're planning your activities or simply enjoying the weather, understanding these statistics will help you make the most of your time in Interlaken!

May Temperature in Interlaken

In May, in Interlaken, the average temperature is 14°C (58°F). Maximum temperatures can reach 32°C (89°F) while minimums can drop as low as -2°C (28°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates May 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, May typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (89°F) and lows dropping to around -2°C (28°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.

May Precipitation in Interlaken

In Interlaken in May, the precipitation amount is 119 mm (4.7 in) over a span of 15 days.

May Precipitation Trends in Interlaken

The chart displays monthly precipitation patterns in Interlaken, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Interlaken, May typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec7685801121199013586821448992
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Interlaken

In Interlaken in May, humidity is 82%. With an average temperature of 14°C (58°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and sticky.

May Average Humidity in Interlaken

This chart illustrates the average monthly humidity levels in Interlaken, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Interlaken is approximately 82%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Interlaken

In Interlaken in May, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Interlaken.

Maximum UV Index Levels in Interlaken for May

The chart shows the monthly maximum UV Index (UVI) for Interlaken in May, 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 May, the maximum UV index in Interlaken typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Interlaken May 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 May 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 May’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 May’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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