Last updated: June 2, 2025
In Karlshus, Norway, staying informed about the UV Index is crucial for maintaining healthy skin and preventing sunburn. Understanding the levels of ultraviolet radiation can significantly impact your outdoor activities, especially during the sunnier midday hours when the UV Index reaches a peak of 7 between 1 PM and 2 PM. With its Cfb climate, Karlshus can experience varying UV exposure throughout the day, making it essential for residents and visitors alike to be mindful of the sun's rays. By keeping an eye on the UV index, you can enjoy the beautiful outdoors while ensuring your skin stays protected from potential damage.
As the day unfolds, the UV Index rises steadily, starting from a mild 1 at 07:00. By 09:00, it reaches 3, marking the beginning of increased sun exposure. At 10:00, the index escalates to 4, and by 11:00, it hits 6, indicating a peak in intensity. The highest UV levels occur at 13:00 and 14:00 with a sharp 7, suggesting it's prime time for protective measures. As the afternoon progresses, the index gradually declines, falling to 5 by 16:00 and 3 by 17:00. As the sun sets, the index drops back to 1 by 19:00, offering a gentle reminder of the sun's power throughout the day. Remember to stay safe and embrace those UV rays 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 | 6 | high | 25 min |
| 12:00 | 6 | 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 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, with peak intensity occurring during the summer months. January through February feature low UV Index levels (1), allowing for safe outdoor activities with a burn time of 45 minutes. As spring approaches, March to May sees a gradual increase, reaching a moderate level (3-5) where exposure should be limited to 30 minutes to prevent skin damage. The high-risk months of June and July present the highest UV indices (7), necessitating heightened precautions and limiting direct sun exposure to 25 minutes. In late summer and fall, August to September sees a moderate decrease, while October through December return to low levels, similar to the start of the year, with a burn time of 45 minutes. Visitors and residents are advised to wear sunscreen, protective clothing, and seek shade, particularly during the high UV months to ensure skin safety and health.
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 |
| Karlshus | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |