UV Index
UV Index
Today's UV index in Trondheim, Norway 
will be up to 3.6, 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 3.6 in Trondheim, 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 Trondheim is generally low, often between 0 and 3, with higher readings during late spring and summer months, especially in June and July. It rarely exceeds moderate levels due to the northern latitude.
Trondheim has cold winters with snow from November to March and mild summers from June to August. Spring and autumn are brief and cool, with more rain in autumn and occasional snowfall in early spring.
Compared to other parts of Norway, Trondheim’s weather is milder than the northern Arctic areas but colder than southern Norway. It is wetter than inland areas but less rainy than coastal cities further west like Bergen.
See the UV index hour by hour for Trondheim, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.