Last updated: June 2, 2025
Understanding the UV Index in Hejnice, Czech Republic is crucial for safeguarding your skin against harmful ultraviolet radiation. With peak UV levels reaching up to 8 during midday, awareness of these values can help prevent sunburn and maintain skin health. Hejnice's Cfb climate offers a mix of mild summers and chilly winters, but even in the warmer months, residents and visitors should remain vigilant about UV exposure. By staying informed about the local UV Index, you can enjoy the beautiful outdoors while protecting yourself from the risks associated with excessive sun exposure.
As the sun rises, the UV Index begins its ascent, starting at a mere 1 at 7:00 AM. By 8:00 AM, it climbs to 2, but it’s by 9:00 AM that we see a moderate rise to 3. The intensity peaks between 11:00 AM and 1:00 PM, hitting a high of 8, indicating that sun protection methods should be in full swing. As the afternoon progresses, values slightly decrease, with the UV Index dropping to 6 by 3:00 PM and then gradually retreating to 1 by 7:00 PM. This hourly data serves as a reminder to stay vigilant about sun safety during the mid-day hours when UV exposure is at its highest.
| 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 | 5 | moderate | 30 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 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Understanding the seasonal UV changes is crucial for both residents and visitors. The UV Index remains low during the winter months, peaking in January and February at 1 to 2, with a burn time of 45 minutes. As spring approaches, the index rises significantly, reaching moderate levels in March (4) and high levels in April (6), followed by even higher values in May (7). The peak risk months are undoubtedly June and July, where the UV Index reaches 8 (very high) and the burn time drops to just 15 minutes, meaning quick exposure can result in skin damage. August and September still present substantial risk with a high index of 7 and 6 respectively. As the year closes, the index declines again in October (3), returning to low levels in November and December. Visitors and residents alike are advised to remain vigilant, particularly from April to September, by wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hejnice | 1 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| 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 |
| 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 |