UV Index
UV Index
Today's UV index in Heelsum, Netherlands 
will be up to 5.7, 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: 2025-06-01
With a UV index reaching up to 5.7 in Heelsum, 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 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.