Last updated: July 2, 2025
In Sejny, Poland, understanding the UV Index is crucial for protecting your skin and promoting overall health. With varying UV levels throughout the day, especially peaking at 7 during midday, awareness of these fluctuations can help you prevent painful sunburns and long-term skin damage. Nestled in a Dfb climate zone, Sejny experiences distinct seasons, but sunny days can still pose risks for unprotected skin. Keep an eye on the UV Index to enjoy the sun safely while maintaining your skin's health and vitality!
The UV Index throughout the day exhibits a dynamic progression as the sun rises. At 07:00 AM, the index starts at a low 2, indicating minimal risk for the skin. As the hours unfold, it climbs steadily, peaking at 11:00 AM with a maximum value of 7—a clear indication for sun protection as the risk becomes high. For the next hour, it maintains this peak, ensuring the midday sun's intensity is felt. By 14:00, the index begins to decline, reflecting the sun's gradual retreat, dropping to 6 at 2 PM before eventually easing to 4 at 4 PM. The evening brings a gentle decline, with values of 2 at 5 PM, and tapering off to 1 by 6 PM and 7 PM, suggesting a peaceful end to a sunlit day. Stay informed, and don't forget your sunscreen during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences noticeable seasonal variations, impacting the level of sun exposure risk for residents and visitors. The highest risk months for UV exposure are from May to August, where the UV Index peaks at 8 in June, classified as very high, indicating a burn time of just 15 minutes. Conversely, from January to February and November to December, the UV Index remains low (1-2), allowing for up to 45 minutes of exposure without significant risk. As such, it is important for everyone to take precautions during the late spring and summer months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when UV radiation is most intense. Being aware of these fluctuations will help ensure safe sun practices year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sejny | 1 | 2 | 4 | 5 | 6 | 8 | 7 | 6 | 5 | 3 | 2 | 1 |
| Warsaw UVI | 1 | 2 | 4 | 5 | 6 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Poznan UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Lodz UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Wroclaw UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Krakow UVI | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |