UV Index
UV Index
Today's UV index in Karlsruhe, Germany 
will be up to 5.9, 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 5.9 in Karlsruhe, 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.
Karlsruhe's UV index varies seasonally, typically low in winter (around 0-1) and higher in summer (up to 7-8), indicating stronger sun exposure during warmer months. The UV index rarely reaches extreme levels.
In Karlsruhe, summers are warm with temperatures often between 20-30°C, while winters are cold and damp, sometimes dropping below freezing. Spring and autumn are mild but can be rainy and cloudy, with unpredictable weather changes.
Compared to other parts of Germany, Karlsruhe has a relatively mild climate with more sunshine and less rainfall than northern cities. It's warmer and sunnier than cities like Hamburg but cooler and rainier than southern neighbors like Switzerland or Austria.
See the UV index hour by hour for Karlsruhe, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.