UV Index
UV Index
Today's UV index in Heidelberg, Germany 
will be up to 6.1, indicating a high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-01
With Heidelberg's UV index reaching 6.1, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
The UV index in Heidelberg usually ranges between low and moderate throughout the year, with higher levels during summer months, especially in June and July, reaching up to about 6 or 7 on sunny days.
Heidelberg experiences all four seasons distinctly, with cold, snowy winters and warm, sometimes rainy summers. Spring and autumn bring mild temperatures and occasional rain, while summer often sees the warmest and sunniest weather.
Compared to other parts of Germany, Heidelberg's weather is relatively mild because it lies in the Rhine valley. It tends to be warmer than northern Germany but cooler than some areas in southern Germany, like Bavaria. Neighboring countries like France and Switzerland have similar seasonal patterns but can be warmer or colder depending on elevation.
See the UV index hour by hour for Heidelberg, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.