Last updated: May 3, 2025
In Horni Bojanovice, understanding the UV Index is crucial for maintaining your skin health and preventing sunburn. With a Cfb climate that offers a blend of mild summers and chilly winters, the risks associated with UV exposure can sometimes be underestimated. During the sunniest hours, especially between 11:00 AM and 2:00 PM, the UV Index peaks at levels 6 and 7, indicating a moderate to high risk of harm from unprotected sun exposure. Being aware of these UV levels empowers residents and visitors to make informed choices about sun safety, ensuring enjoyable and safe outdoor experiences year-round.
As the sun rises, the UV Index begins to climb, starting the day at a modest 1 at 07:00. By 08:00, it gently increases to 2, setting the stage for a bright morning. However, from 09:00 onward, the intensity picks up, reaching 3 by mid-morning. The sun is at its peak from 11:00 to 13:00, when the UV Index hits a high of 7, indicating a need for sun protection. As the afternoon progresses, the UV levels gradually decrease, falling to 6 at 15:00 and then to 4 by 16:00. By the evening hours, the index returns to a low of 1 by 18:00, signaling a safe time to enjoy outdoor activities as the sun sets. This data emphasizes the importance of sun safety during the peak hours of 11:00 to 14:00 when UV exposure is greatest.
| 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 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 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 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so do UV levels, significantly impacting sun safety for visitors and residents. January and February start with a low to moderate UV Index, with burn times ranging from 30 to 45 minutes. However, from March to August, the UV Index rises sharply, reaching very high levels of 8 in June and July, with reduced burn times of just 15 minutes. High-risk months include June, July, and August, when precautions are essential to prevent sunburn and long-term skin damage. By September, UV levels begin to decrease, eventually returning to low levels by November and December. It is crucial for everyone to use sunscreen, wear protective clothing, and limit sun exposure, especially during the peak 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 |
| Horni Bojanovice | 2 | 3 | 5 | 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 |