Last updated: May 3, 2025
Understanding the UV Index is essential for residents of Karkkila, Finland, especially during the sunny summer months when UV radiation can reach concerning levels. By being aware of the UV index, you can take proactive steps to prevent sunburn and maintain your skin health. Karkkila experiences a Dfb climate, characterized by warm summers, which means that those peak UV levels can pose risks, particularly between 11 AM and 3 PM when they can soar to 5. So, whether you're enjoying outdoor activities or just spending time in your garden, staying informed about the UV levels is key to protecting yourself and your loved ones from harmful sun exposure.
As the sun rises, the UV Index begins its gentle ascent, starting at a modest 1 at 07:00 and remaining low until 09:00. By 10:00, it reaches a mild 3, signaling a perfect time for outdoor activities. The intensity peaks between 12:00 and 14:00, hitting a maximum of 5, urging sun lovers to take precautions against the stronger rays. As the afternoon wanes, the index gradually decreases, dipping back to a 3 by 17:00, and ultimately returning to a 1 by 19:00. This pattern highlights the day's ideal hours for sun exposure while emphasizing the importance of sun safety during peak hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | 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 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure levels fluctuate significantly, with peak intensity occurring during the summer months. January through February feature low UV Index levels (1), allowing for safe outdoor activities with a burn time of 45 minutes. As spring approaches, March to May sees a gradual increase, reaching a moderate level (3-5) where exposure should be limited to 30 minutes to prevent skin damage. The high-risk months of June and July present the highest UV indices (7), necessitating heightened precautions and limiting direct sun exposure to 25 minutes. In late summer and fall, August to September sees a moderate decrease, while October through December return to low levels, similar to the start of the year, with a burn time of 45 minutes. Visitors and residents are advised to wear sunscreen, protective clothing, and seek shade, particularly during the high UV months to ensure skin safety and health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Karkkila | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |