Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Groa, Norway, where the unique ET climate can lead to varying levels of sun exposure. Being aware of UV levels is essential not just for preventing painful sunburn but also for safeguarding your long-term skin health. With midday values peaking at 6 to 7, Groa experiences significant UV exposure risks, particularly during the summer months. Stay informed and take proactive measures to enjoy the beautiful outdoors while protecting your skin!
The UV Index for the day presents a clear pattern of increasing intensity, peaking at 1 PM with a significant value of 7, signaling a time for caution if you're outdoors. As the day progresses, the index climbs steadily from 1 at 7 AM to reach 6 by noon. After the afternoon high, the levels gradually decrease, settling back to 3 by 6 PM. For your safety, it’s best to stay protected with sunscreen and protective clothing during the hours of 11 AM to 3 PM, when the UV exposure is at its highest. As the sun dips lower, the risk decreases, making later hours more comfortable for outdoor activities. Enjoy the sunshine wisely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
The UV Index demonstrates distinct seasonal variations, peaking during the summer months. From January to February, the UV Index remains low (1), allowing for a safe sun exposure time of 45 minutes. As we move into March, the index rises to 3, indicating a moderate risk, with a burn time of 30 minutes. The months of April to June see a notable increase, hitting a high of 7 in July, when the burn time shortens to 25 minutes. August sees a slight decrease to a moderate 5, followed by a further decline in September and October. The year concludes with low UV levels in November and December (Index 1), permitting extended sun exposure once again. To safeguard skin health, high-risk months are identified as May through July; visitors and residents should apply sunscreen, wear protective clothing, and limit sun exposure during peak hours to mitigate the risk of UV-related harm.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Groa | 1 | 1 | 3 | 5 | 6 | 6 | 7 | 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 |