UV Index
UV Index
Today's UV index in Västerås, Sweden 
will be up to 3.9, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With a UV index reaching up to 3.9 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 varies throughout the year, peaking around 5 to 6 in summer months and dropping close to zero in winter due to its northern location and reduced sunlight. Västerås experiences cold winters with snow, often below freezing from December to February, and mild summers with temperatures reaching around 20 to 25 degrees Celsius. Spring and autumn bring moderate temperatures and variable weather, including rain and occasional frost. Compared to southern Sweden, Västerås is generally cooler with longer winters. It has milder summers and less intense UV radiation than southern areas but is warmer and sunnier than much of northern Sweden. Neighboring countries like Norway and Finland have similar seasonal patterns, although Norway’s coastal areas are milder due to the Gulf Stream.
See the UV index hour by hour for Västerås, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.