UV Index
UV Index
Today's UV index in Heelsum, Netherlands 
will be up to 7, 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: 2025-06-22
With Heelsum's UV index reaching 7, 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 Heelsum generally ranges from low to moderate, peaking in the summer months around 5 to 7. Sunlight is less intense in winter, often dropping to 1 or 2. Seasonal patterns in Heelsum show mild summers with temperatures averaging 17 to 22°C (63 to 72°F) and cool winters around 0 to 6°C (32 to 43°F). Rainfall is spread throughout the year, with slightly wetter autumns and winters. Spring and summer bring more daylight and occasional sunny days. Compared to the wider Netherlands, Heelsum experiences similar weather, being inland but still influenced by the North Sea. Neighboring countries like Germany and Belgium have comparable climates, though Germany's interior can be slightly warmer or colder depending on the region.
See the UV index hour by hour for Heelsum, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.