UV Index
UV Index
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Today's UV index in Basel, Switzerland 
will be up to 4.5, 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 4.5 in Basel, 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 Basel, Switzerland typically ranges from 1 to 8. In winter, the index is low, while during summer months it can reach higher levels.
Basel experiences four distinct seasons. Spring arrives in March, bringing mild temperatures and blooming flowers. Summers are warm, with highs around 25°C. Autumn, from September to November, is cool and colorful. Winters are chilly, with temperatures often dropping below 0°C.
Compared to its region and neighboring countries, Basel is relatively mild. While the nearby Alps can be very cold, Basel's location in the northern part of the country, near the Rhine River, provides a moderating influence, resulting in a more temperate climate.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Basel. It's designed to provide you with a better understanding of the yearly weather and sun exposure.