Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Horní Planá, Czech Republic, where sun exposure can significantly impact skin health. Knowing the UV levels helps in preventing sunburns and long-term skin damage, allowing you to enjoy the beautiful outdoors safely. With a Cfb climate, Horní Planá experiences varying UV exposure throughout the day, peaking at a high of 9 around 1 PM. This means that during summer months, when the sun's rays are strongest, awareness of UV levels becomes essential for protecting your skin while enjoying the stunning natural landscapes. Stay informed and protect your skin!
The UV Index shows a distinct daily rhythm, peaking at 1 PM with a significant value of 9—a strong indicator for sun exposure. As the day unfolds, early morning starts at a comfortable 1 at 7 AM, gradually climbing to 2 by 8 AM. By 10 AM, it reaches 5, and just before noon, it surges to 8. The afternoon sees a slight dip from 9 at 1 PM to 7 by 3 PM, before slowly descending back to 1 by 7 PM. This data highlights the importance of sun protection during those peak hours, especially from 11 AM to 2 PM. Remember to 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | 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 |
Throughout the year, the UV Index demonstrates notable seasonal variations that affect exposure risk. January and February have relatively low to moderate UV levels (Index 2-3), with safe burn times of 45 and 30 minutes respectively. As spring approaches, March sees a rise to an index of 5, and by April, it reaches 6, marking the beginning of high-risk months. The most critical period arrives in May and June, where the UV Index peaks at 8-9, indicating very high exposure risk and a reduced burn time of just 15 minutes. July and August maintain this peak, before tapering off in September with a return to a high risk (UV Index 6). October brings a moderate reduction (Index 4), while winter months November and December drop back to low levels. Visitors and residents should be particularly vigilant during May through September, using sunscreen and protective clothing to minimize harmful effects during these high-risk months.
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 |
| 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 |
| Horni Plana | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |