UV Index
UV Index
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Today's UV index in Bern, Switzerland 
will be up to 4.4, indicating a moderate level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 4.4 in Bern, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
The UV index in Bern, Switzerland, can reach a high of 7 in summer months, suggesting a significant risk of harm from unprotected sun exposure. In winter, the index drops to around 1, indicating little to no risk.
Bern has four distinct seasons. Spring, from March to May, is generally mild and wet. Summers are warm and often reach temperatures in the mid-twenties Celsius. Autumn, from September to November, is cool and colorful. Winters are cold, snowy and last from December to February, with temperatures occasionally dropping below freezing.
Compared to its region and neighboring countries, Bern's climate is moderately continental. It's slightly colder and receives more precipitation than nearby cities in France and Germany. However, it's warmer and drier than many parts of the Swiss Alps, making it a popular destination for tourists seeking a mix of city life and outdoor activities.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Bern. It's designed to provide you with a better understanding of the yearly weather and sun exposure.