Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Lestijaervi, Finland, as it plays a pivotal role in sunburn prevention and maintaining overall skin health. With the area's Dfc climate, Lestijaervi experiences varying UV exposure throughout the day, peaking between 12:00 PM and 2:00 PM with levels reaching 6—a significant risk for sun damage. By staying informed about UV levels, individuals can make better choices regarding sun safety, ensuring a healthier, more enjoyable experience in the Finnish outdoors.
Starting early in the morning, the UV Index gradually climbs, reaching a peak of 6 at noon and maintaining that level until 2 PM. By 7 AM, it’s a mild 1, but as the sun rises higher, the intensity escalates to 5 by 11 AM. The highest point occurs at 12 PM, where caution is advised for outdoor activities. As the afternoon progresses, the index slightly dips to 5 at 3 PM, before gradually falling back to 2 by 7 PM. This pattern suggests that planning outdoor ventures during the midday hours warrants protective measures, while later hours are more forgiving for fun in the sun.
| 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 | 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 fluctuates seasonally, reflecting changes in sun strength and associated risk levels throughout the year. January through March sees low UV levels (1-2) with a burn time of 45 minutes. As spring approaches, April and May experience an increase to moderate exposure (4-5), reducing burn time to 30 minutes. The risk peaks in June and July, where the UV Index reaches 6, categorizing it as high risk, with a burn time of just 25 minutes. This is followed by a slight decrease in August (UV Index 5) and September (UV Index 3), both retaining moderate exposure. By October to December, levels fall back to low (1-2), allowing for a safer burn time of 45 minutes. Visitors and residents should exercise caution and use sun protection during high-risk months (June and July), while maintaining awareness of changing UV levels throughout the year to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lestijaervi | 1 | 1 | 2 | 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 |