Last updated: June 2, 2025
In Rjukan, Norway, understanding the UV Index is crucial for maintaining your skin health and preventing sunburn, especially during the sunny summer months. Knowing the UV levels throughout the day can help you take the necessary precautions while enjoying the scenic beauty of this picturesque valley. With its Dfc climate, Rjukan experiences varied UV exposure risks, particularly around midday when the index can soar to 7. By staying informed about daily UV trends, residents and visitors can better protect themselves from harmful UV radiation and enjoy outdoor activities safely.
The UV Index throughout the day showcases a dynamic rise and fall, peaking at 7 between 12:00 and 14:00. Starting off gently at 1 at 07:00, it gradually escalates, reaching 4 by 10:00 and spiking to a robust 6 at 11:00. As the sun reaches its zenith, the index hits its highest point of 7, signaling a strong need for sun protection. Post-14:00, the intensity begins to dip, descending gracefully to 5 by 16:00, and tapering off further to 2 by 19:00. This fascinating UV journey underscores the importance of vigilance and protection when exposed to sunlight, particularly during the 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 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 7 | 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 |
Throughout the year, seasonal UV Index changes indicate varying levels of sun exposure risk. In the low-risk months of January, February, October, November, and December, the UV Index remains between 1 and 2, allowing for a safer burn time of 45 minutes. As spring approaches, March sees a moderate UV Index of 3, reducing safe exposure to 30 minutes. The high-risk months of May through August, with UV Index values between 6 and 7, demand more caution as burn times drop to 25 minutes. September transitions back to moderate levels, while the cycle returns to low risk by October. Visitors and residents are advised to monitor UV Index changes, especially during high-risk months, by applying sunscreen, wearing protective clothing, and seeking shade to minimize 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 |
| Rjukan | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |