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April Weather in Interlaken, United States

Last updated: June 24, 2025

In April, the average temperature in Interlaken, United States hovers around 8°C (46°F). However, be prepared for a range, as it can dip to a chilly -5°C (24°F) or rise to a pleasant 27°C (81°F). Expect 111 mm (4.4 in) of precipitation across 16 days, and with an average humidity of 88%, it's wise to come ready for some moisture in the air!

April Temperature in Interlaken

In April in Interlaken, the average temperature is 8°C (46°F), with maximums reaching up to 27°C (81°F) and minimums dipping as low as -5°C (24°F). It's advisable to pack layers for your trip to Interlaken, as the weather can vary significantly throughout the day.

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

The chart illustrates April 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, April typically has an average temperature of 8°C (46°F), with highs reaching up to 27°C (81°F) and lows dropping to around -5°C (24°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.

April Precipitation in Interlaken

In Interlaken in April, the precipitation amount is 111 mm (4.4 in) occurring over the course of 16 days.

April Precipitation Trends in Interlaken

The chart displays monthly precipitation patterns in Interlaken, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Interlaken, April typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec7685801121199013586821448992
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in Interlaken

In Interlaken in April, humidity is 88%. With an average temperature of 8°C (46°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration feel much more uncomfortable than the temperature alone would suggest.

April Average Humidity in Interlaken

This chart illustrates the average monthly humidity levels in Interlaken, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Interlaken is approximately 88%, 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 April generated using information from the Copernicus Climate Change Service.

April UV Index in Interlaken

In Interlaken in April, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Interlaken.

Maximum UV Index Levels in Interlaken for April

The chart shows the monthly maximum UV Index (UVI) for Interlaken in April, 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 April, the maximum UV index in Interlaken typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Interlaken April 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 April 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 April’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 April’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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