Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Hejnice, Czech Republic, where outdoor activities are common amidst its beautiful landscapes. With peak UV levels soaring to 8 during midday, awareness of these readings can help prevent sunburn and long-term skin damage. Given Hejnice's Cfb climate, characterized by moderate temperatures and varying cloud cover, it's essential to monitor UV exposure to protect your skin health, especially during the sunniest hours of the day. Stay informed and enjoy the sun safely!
The UV Index throughout the day displays a captivating rise and fall, peaking at 12:00 PM and 1:00 PM with a substantial value of 8, indicating a high risk of harm from unprotected sun exposure. As the sun climbs, the index escalates from a mild 1 at 7:00 AM to a moderate 6 by 11:00 AM. It surges further as noon approaches, reaching its zenith before gradually tapering off in the afternoon, showcasing 7 at 2:00 PM, and dwindling to 1 by 7:00 PM. This pattern highlights the importance of sun protection during mid-day hours, when the sun's intensity is at its most fierce. Enjoy the sun safely! ☀️
| 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 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 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 |