UV Index
UV Index
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Today's UV index in Västerås, Sweden 
will be up to 4.1, 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 4.1 in Västerås, 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 Västerås, Sweden, can reach a high of 7 during the summer months. In the winter, the UV index is usually low, rarely exceeding 1.
Västerås experiences four distinct seasons. Summer days are long and warm with temperatures around 20-25°C. Autumn brings cooler temperatures and vibrant foliage. Winter is cold and snowy, with temperatures often below freezing. Spring sees the snow melt and temperatures gradually increase.
Compared to its region and neighboring countries, Västerås is typically cooler and slightly wetter than southern Sweden and Denmark. However, it is warmer and less rainy than Norway's coastal areas. Summer temperatures are similar to those in Finland, but Västerås experiences colder winters.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Västerås. It's designed to provide you with a better understanding of the yearly weather and sun exposure.