Ernen Weather & Climate: Best Time to Visit

Average temperatures, rainfall, sunshine and the best time to visit Ernen.

Climate overview of Ernen

The climate in Ernen, Canton of Valais, Switzerland, is marked by large temperature swings across the seasons, ranging from 16°C (61°F) in July to -5°C (23°F) in January.

Rain/snowfall is high, totalling around 1910 mm (75 in) per year. August is the wettest month and February the driest. The city also experiences a distinct rainy season from May to August, with mild summers and very cold winters. July is the sunniest month, averaging 7.3 hours of sunshine per day.

Ernen Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Ernen - and find the best time to visit.

Monthly Temperature in Ernen

In Ernen, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a moderate 16°C (61°F) in July, the warmest time of the year, to a very cold -5°C (23°F) during cooler months like January.

At night, you can expect temperatures ranging from 6°C (43°F) in July to around -12°C (10°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Ernen

Ernen experiences significant rain/snowfall throughout the year, averaging 1910 mm (75 in) of precipitation annually. While rainfall varies throughout the year, each season offers its own charm. August brings wetter days averaging 196 mm (7.7 in) of precipitation, spread over 19 rainy days.

In contrast, the driest month February experiences a drier climate, with about 116 mm (4.6 in) of snowfall spread across 15 snowy days. For more details, please visit our Ernen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Sunshine Hours in Ernen

Seasonal changes in sunshine hours are quite dramatic in Ernen. While July receives considerable daily sunshine with up to 7.3 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.7 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Interlaken, Switzerland (35 KM, 22 Miles).

Daily hours of sunshine

Data from: Interlaken, Switzerland (35 KM, 22 Miles).

Humidity in Ernen by Month

Best Time to Visit Ernen

Weather conditions in Ernen vary little from month to month, so there is no clear best period based on weather alone.

Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.

  • Warmest weather: July and August
  • Most sunshine: July
  • Seasonal pattern: A distinct rainy season from May to August, with mild summers and very cold winters
  • Coldest conditions: January, with freezing nights around -12°C (10°F).

Frequently asked questions about the climate in Ernen

What is the best time to visit Ernen?

Ernen has a distinct rainy season from May to August, with mild summers and very cold winters.

What temperatures can I expect in Ernen?

Daytime highs range from -5°C (23°F) in January to 16°C (61°F) in July. Nighttime lows range from -12°C (10°F) to 6°C (43°F). Temperatures vary considerably through the year.

How much rain does Ernen get?

Annual rainfall is around 1910 mm (75 in). August is the wettest month with 196 mm (7.7 in), while February is the driest with 116 mm (4.6 in).

How sunny is Ernen?

Ernen receives around 1,580 hours of sunshine per year. July is the sunniest month with 219 hours, while December is the cloudiest with just 51 hours.

Ernen 3-Day Forecast

Ernen on the map

Ernen is highlighted - select any city to see its climate.

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