Last updated: June 2, 2025
In Tromsø, Norway, understanding the UV Index is crucial for maintaining skin health and preventing sunburn, especially during the bright summer months. With the city’s Dfc climate bringing extended daylight hours, UV exposure can surprisingly escalate, reaching levels as high as 5 around noon. Being aware of these fluctuations helps residents and visitors alike take necessary precautions, ensuring enjoyable outdoor activities while safeguarding against harmful UV rays. Stay informed about the UV Index to protect your skin and enjoy the stunning natural beauty of this Arctic paradise safely!
As the sun rises, the UV Index starts off at a mild 2 at 7:00 AM, gradually increasing throughout the morning. By 10:00 AM, it reaches a moderate 4, peaking at a solid 5 from 11:00 AM to 2:00 PM, indicating a great need for sun protection during these hours. As the afternoon wears on, the intensity begins to wane, with levels dropping back to 4 by 3:00 PM, and further decreasing to 3 at both 4:00 PM and 5:00 PM. By 6:00 PM, the index falls to 2, and finally settles at just 1 as twilight approaches at 7:00 PM. It's a day characterized by a peak UV exposure during midday, reminding everyone to stay safe in the sun!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels demonstrate significant seasonal variation, with the highest risk months being April through August. During this period, the UV Index rises from a moderate level of 3 in April to a peak of 5 in June and July, where the recommended burn time decreases to just 30 minutes. In contrast, the winter months—January, February, and December—feature a low UV Index, where exposure is less critical with a burn time of 45 minutes. Visitors and residents are advised to take precautions during the high-risk months: apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak sun hours to reduce the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tromso | 1 | 1 | 2 | 3 | 4 | 5 | 5 | 4 | 2 | 1 | 1 | 0 |
| Trondheim UVI | 1 | 1 | 2 | 4 | 5 | 6 | 6 | 5 | 3 | 2 | 1 | 1 |
| Bergen UVI | 1 | 1 | 3 | 4 | 5 | 7 | 6 | 5 | 4 | 2 | 1 | 1 |
| Oslo UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Drammen UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Stavanger UVI | 1 | 1 | 3 | 4 | 6 | 7 | 6 | 5 | 4 | 2 | 1 | 1 |