UV Index
UV Index
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Today's UV index in Winterthur, Switzerland 
will be up to 3.4, 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 3.4 in Winterthur, 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 Winterthur, Switzerland, remains low during the winter months, typically ranging from 0-2, and increases to 4-6 during the summer.
Winterthur experiences four distinct seasons: a chilly winter with occasional snow, a mild spring with occasional rain, a warm and sunny summer, and a cool and colorful autumn.
Winterthur's climate is moderate compared to its region and neighboring countries, with milder winters and cooler summers than southern European cities. However, it still experiences more rainfall than many neighboring countries in central Europe.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Winterthur. It's designed to provide you with a better understanding of the yearly weather and sun exposure.