Last updated: July 2, 2025
In Rognan, Norway, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn, especially during those sunny days when UV levels peak. Understanding these levels can help you make informed decisions about sun protection and outdoor activities. The climate in Rognan, classified as Dfc, typically brings cool summers with occasional sunny spells, creating moments when UV exposure can be deceptively high. With UV Index values reaching up to 6 during the brightest hours of the day, awareness and precaution become key to enjoying the sun safely.
The UV Index throughout the day shows a steady climb, peaking during the midday hours. Starting at 2 at 07:00, it gradually rises to 6 by 13:00, indicating a heightened need for sun protection during these hours. As the afternoon wanes, the index dips back down, resting at 2 by 18:00 and tapering off to 1 by 19:00. Notably, the hours of 11:00 to 14:00, with values of 5 and 6, highlight the critical time to stay vigilant against overexposure to the sun. So, if you're planning to be outdoors, don your sunscreen and sunglasses, especially during those peak hours!
| 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 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, with the highest levels occurring in the summer months. From June to July, the UV Index reaches 6, indicating a high risk for sunburn, requiring only 25 minutes of exposure for skin damage to occur. As we transition into April and May, the index rises to 4 and 5 respectively, marking a moderate risk and a reduced burn time of 30 minutes. Conversely, the winter months, particularly from October to March, present much lower levels, with an index of 1 to 2, categorizing exposure as low and allowing for 45 minutes before risking a burn. Visitors and residents are advised to take extra precautions from April through July, including wearing sunscreen, protective clothing, and seeking shade during peak sun hours, to mitigate the risks of UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rognan | 1 | 1 | 2 | 4 | 5 | 6 | 6 | 4 | 3 | 1 | 1 | 1 |
| 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 |