Last updated: July 2, 2025
In Kostelec, Czech Republic, awareness of the UV Index is essential for maintaining skin health and preventing sunburns, particularly during the warmer months. Understanding UV levels can help residents and visitors make informed choices about sun protection throughout the day. With a Cfb climate that enjoys a mix of sunshine and clouds, Kostelec typically sees varying UV exposure risks, peaking with an index of 8 from noon to 2 PM. Being mindful of these levels ensures that you can safely enjoy outdoor activities while safeguarding your skin from harmful UV radiation.
As the sun rises, the UV Index begins its steady climb, starting from a gentle 1 at 7:00 AM. By 10:00 AM, it reaches 5, signaling an increase in UV exposure. The peak occurs at 12:00 PM, hitting a robust 8, where caution is advised, especially for outdoor activities. The intensity remains high at 8 from 1:00 PM to 2:00 PM, encouraging sun protection measures. As the afternoon progresses, the index gradually declines to 6 at 3:00 PM, then further to 3 by 5:00 PM. Finally, as the day winds down, the UV Index settles at 1 by 7:00 PM, reflecting a much safer environment for evening activities. Enjoy the sun, but remember to protect your skin during those peak hours!
| 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 | 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 |
The UV Index varies significantly throughout the year, reflecting changes in seasonal sun exposure. January and November exhibit low UV levels (Index 2) with a burn time of 45 minutes, while February and October show moderate levels (Index 3 and 4) with a burn time of 30 minutes. The risk escalates from March (Index 5) to June and July, where it reaches very high levels (Index 8), necessitating caution with a burn time of only 15 minutes. August and September maintain high levels (Index 6 and 7), with a burn time of 25 minutes. Visitors and residents should be particularly vigilant during the high-risk months of April to August, where sunscreen, protective clothing, and limited sun exposure are crucial to prevent skin damage. Always remain aware of the daily UV Index to stay safe in the sun!
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 |
| Kostelec | 2 | 3 | 5 | 6 | 7 | 8 | 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 |