Last updated: July 2, 2025
In Nykarleby, Finland, awareness of the UV Index is essential for maintaining skin health and preventing sunburn. With UV levels peaking between 11:00 AM and 3:00 PM—reaching up to 6—it's crucial to understand when the risks are highest during the day. The Dfc climate here means frequent cloudy days, but when the sun does shine, UV radiation can still be intense. By keeping an eye on the UV Index, residents and visitors can make informed decisions to protect their skin while enjoying the beautiful outdoors.
As the sun rises, the UV Index begins its slow ascent, peaking during the midday hours. At 07:00, you can expect a mild UVI of 1, suitable for most outdoor activities without concern. By 08:00, it gently climbs to 2, and by 09:00, it reaches 3, marking the start of moderate UV exposure. The index surges to 4 at 10:00 and hits 5 by 11:00, which means it’s time to consider some sun protection. At 12:00 and 13:00, the UVI remains at 5 and 6 respectively, indicating the peak of UV radiation—best to find shade or apply sunscreen during these hours! The afternoon sees a slight drop, with values at 6 until 14:00 before descending to 5 at 15:00 and further to 4 and 3 between 16:00 and 18:00. Finally, as the day winds down, the UV Index returns to a safe 2 by 19:00, ushering in a more comfortable evening for outdoor activities. Be sun-smart and enjoy your day!
| 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 | 5 | moderate | 30 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 5 | moderate | 30 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 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nykarleby | 1 | 1 | 3 | 4 | 5 | 6 | 6 | 5 | 3 | 2 | 1 | 1 |
| Tampere UVI | 1 | 1 | 3 | 4 | 5 | 6 | 6 | 5 | 3 | 2 | 1 | 1 |
| Vantaa UVI | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Espoo UVI | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Helsinki UVI | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |
| Turku UVI | 1 | 2 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |