Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Sundsvall, Sweden, especially during the sunnier months when UV exposure risks can rise significantly. Being aware of UV levels not only helps in preventing sunburn but also plays a vital role in protecting long-term skin health. With a Dfc climate that often sees variable weather, it's essential for Sundsvall’s inhabitants to stay informed about their local UV levels, particularly during midday when they peak at 5. Armed with this knowledge, you can enjoy the beautiful sunshine while safeguarding your skin from harmful effects.
The UV Index forecast for the day presents a pattern that peaks at midday. Starting at 07:00, the index begins at a mild 1, gradually rising to 2 by 08:00. As the sun climbs higher, it reaches 3 by 09:00 and hits a notable 4 at both 10:00 and 11:00. The highest point occurs at 12:00, with a UV Index of 5, and remains steady at this level until 14:00. As afternoon progresses, the index starts to decline, falling to 4 by 15:00, then 3 at 16:00, and tapering off to 2 at 17:00, finally settling back to 1 by 18:00 and 19:00. This gradual increase and decrease highlights the day's solar intensity, underscoring the importance of sun protection during the 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 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, the UV Index fluctuates significantly, indicating varying levels of sun exposure risk throughout the year. From January to February, the UV Index remains low at 1, allowing for a burn time of 45 minutes without significant risk. March marks the beginning of a rise, with a moderate exposure category of 3 (burn time: 30 min), continuing through to May when it reaches 5. The high-risk months are June and July, where the UV Index peaks at 6, necessitating caution with a reduced burn time of 25 minutes. By August, the index drops back to 5, with September and October further decreasing to 3 and 2 respectively. Visitors and residents should be particularly vigilant during the summer months of June and July, ensuring adequate skin protection such as sunscreen, hats, and sunglasses, while still enjoying the outdoors responsibly in the moderate months of March, April, May, August, and September.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sundsvall | 1 | 1 | 3 | 4 | 5 | 6 | 6 | 5 | 3 | 2 | 1 | 1 |
| Sollentuna UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Uppsala UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Stockholm UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Goeteborg UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 2 | 1 | 1 |
| Malmoe UVI | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 1 | 1 |