Last updated: June 2, 2025
Understanding the UV Index in Lohja, Finland is essential for safeguarding your skin health, especially in a region characterized by a Dfb climate with its distinct seasons. As the sun rises higher in the sky, the UV levels peak, reaching a maximum of 7 around mid-afternoon, making awareness crucial for effective sunburn prevention. Knowledge of local UV exposure risks helps residents and visitors alike enjoy the outdoors safely, while minimizing the dangers of overexposure. With a typical day featuring fluctuating UV levels, it’s important to stay informed and take protective measures against harmful rays, ensuring a long-lasting and healthy glow!
As the sun rises, the UV Index gradually climbs, reaching a maximum of 7 at 1:00 PM, indicating a significant risk of harm from unprotected sun exposure. Starting from a gentle 1 at 7:00 AM, it builds to a moderate 5 at 11:00 AM, and peaks at 6 during midday. The afternoon sees a slight decline, tapering back to 5 by 4:00 PM and dropping further to a mild 2 by 7:00 PM. Take precautions during the peak hours, especially between 11:00 AM and 2:00 PM, when the sunlight is most intense and skin protection is crucial.
| 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 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 2 | 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 |
| Lohja | 1 | 1 | 3 | 4 | 5 | 7 | 7 | 5 | 4 | 2 | 1 | 1 |