Last updated: July 2, 2025
In Lumijoki, Finland, being aware of the UV Index is essential for maintaining skin health and preventing sunburn. Understanding UV levels is crucial during the sunnier months, especially when the index peaks at 6 around midday, indicating a significant risk of harm from unprotected sun exposure. Lumijoki's Dfc climate may temper prolonged sun exposure, but even on cooler days, UV rays can penetrate the clouds, making it vital for residents and visitors alike to stay informed about UV risks and take protective measures. By monitoring local UV levels, you can enjoy the beauty of Lumijoki while safeguarding your skin from the sun’s potentially damaging effects.
The UV Index rises steadily through the morning, starting at a mild 1 at 07:00, then climbing to 2 by 08:00. As the sun reaches its peak, it hits a maximum of 6 at both 13:00 and 14:00, signifying a high potential for harm from unprotected sun exposure. The intensity then begins to wane, dropping back to 5 by 15:00 and gradually descending to 2 by 19:00. It’s advisable to stay protected when the index reaches 5 or higher, especially during the midday hours when the sunlight is strongest. So, prepare for vibrant outdoor activities in the morning and evening, but take caution during the peak hours of 11:00 to 14:00!
| 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 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 2 | low | 45 min |
The UV Index experiences significant seasonal changes, peaking during the summer months. January and February show low UV levels (1), with a burn time of up to 45 minutes, indicating minimal risk for most individuals. As March arrives, the index rises to moderate levels (3), suggesting a burn time of 30 minutes. The UV Index escalates further in June and July to high levels (6), where a burn can occur in just 25 minutes, marking these months as high-risk for sun exposure. While August sees a drop to moderate levels (4), September also returns to moderate (3) before temperatures and UV levels decrease again in the fall and winter months. Residents and visitors should take precautions during high-risk months, particularly from June through August, by using sunscreen, wearing protective clothing, and limiting direct sun exposure during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lumijoki | 1 | 1 | 3 | 4 | 4 | 6 | 6 | 4 | 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 |