UV Index
UV Index
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Today's UV index in Köln, Germany 
will be up to 6.5, indicating a high 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 Köln's UV index reaching 6.5, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours between 10 a.m. and 4 p.m., when UV rays are strongest.
The UV index in Köln, Germany, can reach a high of 8 in the summer months. On average, the UV index here is lower than many other European cities, offering some natural protection against the sun’s harmful rays.
Köln experiences four distinct seasons. Winters are mild and often damp, with temperatures rarely dropping below freezing. Spring brings milder weather, leading to warm summers with occasional showers. Autumn is usually crisp and comfortable, with leaves changing colors and falling.
Compared to its region and neighboring countries, Köln's weather is relatively temperate. It's warmer than many parts of Northern Europe, but cooler than Southern European cities like Madrid or Rome. Rainfall is more common in Köln than in many other German cities, similar to London or Brussels.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Köln. It's designed to provide you with a better understanding of the yearly weather and sun exposure.