Last updated: June 2, 2025
In Ciasna, Poland, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding the UV levels helps prevent sunburn and reduces the risk of long-term skin damage. With a Cfb climate characterized by variable weather, it's important to be aware of fluctuating UV exposure, especially during peak hours when the index reaches levels of 7 to 8. By following the UV Index, you can enjoy the sun safely while preserving your skin's health.
The UV Index throughout the day showcases a significant peak in midday sun intensity. Starting from 1 at 07:00, it climbs steadily, reaching 4 by 09:00. The real surge occurs between 10:00 and 13:00, with the index hitting a high of 8 at 13:00—the sun is at its strongest then! As the afternoon progresses, the UV levels begin to taper off: 7 at 14:00, 6 at 15:00, and dropping to 3 by 17:00. Eventually, the index declines to a gentle 1 by 19:00, signaling a safe return to outdoor activities as the day winds down. Stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 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 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 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 |
The UV Index exhibits significant seasonal changes, reflecting the sun's intensity throughout the year. From January to February, the UV levels remain low (UV Index 2), allowing for a burn time of 45 minutes, making these months relatively safe for outdoor activities. As spring approaches, March and April see a rise to moderate levels (UV Index 4 and 5, respectively) with shorter burn times of 30 minutes. The summer months of May to August pose the highest risks, particularly in June and July when the UV Index peaks at 8, corresponding to a very high exposure category and a burn time of only 15 minutes. September still carries a high risk (UV Index 6) before a gradual decline in October back to moderate levels (UV Index 3). November and December return to lower UV indices (UV Index 2 and 1), allowing for longer exposure times without risk. Visitors and residents should especially prioritize sun protection during May through September, employing sunscreen, hats, and seeking shade during peak hours to minimize UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Ciasna | 2 | 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 |