Last updated: July 2, 2025
In the charming town of Jasenna, Czech Republic, staying informed about the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps residents and visitors alike avoid sunburn and long-term skin damage, especially during the summer months when the index can peak at a high 8 between 12:00 PM and 2:00 PM. With its Dfb climate, characterized by warm summers and cold winters, Jasenna experiences fluctuating UV exposure risks throughout the year. By being aware of UV levels, you can take necessary precautions—like wearing sunscreen and protective clothing—to enjoy the sunny outdoors safely.
The UV Index today illustrates a steady climb in intensity as the day progresses, peaking at 8 between 12:00 PM and 2:00 PM. Early risers will notice a gentle start with a maximum of 1 at 7:00 AM, gradually increasing to 2 by 8:00 AM. As the sun climbs higher, the index surges, reaching 7 at 11:00 AM and soaring to its highest point of 8 at noon. After this peak, the UV levels begin to gradually decline, dropping to 6 by 3:00 PM and further down to 1 by 7:00 PM. This highlights the importance of sun protection during the midday hours, where the UV risk is at its most significant. Stay safe and enjoy the sunshine!
| 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 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 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 |
Throughout the year, the UV Index demonstrates significant seasonal changes that highlight periods of increased sun exposure risk. High-risk months are primarily from April through August, when the UV Index peaks at 9 in June and remains at 8 in July and 7 in May and August, categorizing them as very high and high exposure respectively, with burn times as short as 15-25 minutes. In contrast, winter months like January and December show much lower UV levels, categorized as low, allowing for longer burn times of 45 minutes. Visitors and residents should remain vigilant during high-risk months, taking precautions such as wearing sunscreen, sunglasses, and protective clothing during peak hours, while enjoying the outdoors safely.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Prague UVI | 2 | 3 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Ostrava UVI | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Olomouc UVI | 2 | 3 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 2 |
| Jasenna | 2 | 3 | 5 | 6 | 7 | 9 | 8 | 7 | 6 | 4 | 2 | 1 |
| Pilsen UVI | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Brno UVI | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 2 |