Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents and visitors of Tonstad, Norway, as it plays a significant role in safeguarding skin health and preventing sunburn. The UV levels in this Dfc climate zone can reach a peak of 7 during midday, raising awareness about proper sun protection measures essential for outdoor activities. In the tranquil backdrop of Tonstad, where the sun can be deceptive, being informed about daily UV exposure helps ensure a safer and more enjoyable experience under the sun. By monitoring the UV Index, you can better protect your skin and embrace the beauty of nature with confidence.
The UV Index peaked dramatically throughout the day, starting with a mild 1 at 07:00 and reaching its zenith of 7 between 13:00 and 14:00. As the sun climbed higher, the intensity of UV radiation increasingly called for protective measures. By 11:00, the index had already hit 5, nudging outdoor enthusiasts to seek shade. The afternoon brought a slight decrease, with values tapering to 6 at 15:00 and then gradually down to 2 by 19:00. This pattern highlights the importance of being vigilant during the midday hours when UV exposure is at its most potent. Ensure to stay protected during those peak 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 | 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 |
| Tonstad | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 4 | 2 | 1 | 1 |