Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Rollag, Norway, where sun exposure can impact skin health significantly. As the UV levels rise throughout the day, particularly peaking at a level of 6 between noon and mid-afternoon, awareness becomes essential for preventing sunburn and long-term skin damage. With Rollag's Dfc climate, characterized by cool summers and variable weather, it's important to stay informed about UV risks to enjoy the sun safely. By monitoring the UV Index regularly, you can take proactive steps to protect yourself and make the most of those sunny days!
During a sunny day, the UV Index showcases a dynamic rise and fall in intensity. At 07:00, the index starts modestly at 1, perfect for a relaxed morning outdoors. By 09:00, it climbs to 3, signaling a bit more caution as midday approaches. The index peaks at 12:00 with a robust 6, urging sun-seekers to slather on sunscreen. Continuing through the afternoon, it settles at the peak of 6 from 12:00 to 15:00, maintaining its strength before gradually tapering off. By 17:00, it drops to 3, and as evening approaches, it reaches a gentle 2 around 19:00. This hourly UV rollercoaster reminds us to stay sun-safe, especially during those midday hours!
| 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 | 6 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 2 | low | 45 min |
The UV Index experiences notable seasonal changes, peaking during the summer months. From January to February, UV levels remain low (Index 1-2), allowing for a safe burn time of 45 minutes. As spring approaches in March, the index rises to 3, indicating a moderate exposure risk with a reduced burn time of 30 minutes, which continues into April and May. By June and July, UV levels escalate to 7, categorized as high, and the burn time decreases to just 25 minutes, marking this as a high-risk period for sun exposure. The UV Index begins to decline in August (Index 5) and remains moderate until September (Index 4), before returning to low levels in October, November, and December (Index 1-2, with burn times of 45 minutes). Consequently, residents and visitors are advised to take extra precautions during the summer months, particularly from June to July, by seeking shade, wearing protective clothing, and applying sunscreen to prevent sunburn and skin damage.
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 |
| 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 |
| Rollag | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |