Last updated: May 3, 2025
Understanding the UV Index in Ostrov, Czech Republic, is crucial for safeguarding your skin against harmful ultraviolet radiation. Being aware of UV levels helps you take the necessary precautions to prevent sunburn and promote overall skin health. Given Ostrov's Cfb climate, which features mild summers and moderate sunshine, residents and visitors need to remain vigilant, especially during peak hours when the UV Index can surge to 8 between 1 PM and 2 PM. This page will provide you with essential information on the UV Index to help you enjoy outdoor activities safely while protecting your skin.
The UV Index throughout the day presents a fascinating ebb and flow, starting at a mild 1 at 7:00 AM and gradually climbing to its peak of 8 by 1:00 PM. As the sun ascends in the sky, the intensity of ultraviolet rays increases sharply, reaching 6 at 11:00 AM and hitting 7 just before noon. The afternoon sees a gentle decline, with values dropping to 6 by 3:00 PM and further down to 2 by 6:00 PM, before tapering off to 1 again by 7:00 PM. This data underscores the importance of sun protection during the midday hours when UV exposure is at its highest. Remember to stay safe under the sun! 🌞
| 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 | 8 | very high | 15 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, with the highest levels occurring from May to July, categorized as very high with a burn time of just 15 minutes. April marks the transition into higher UV exposure, registering a UV Index of 6 and a high exposure category. Conversely, the winter months of January, November, and December remain in the low exposure category, with burn times up to 45 minutes. Visitors and residents should be particularly cautious during the high-risk months of May, June, and July, when it is crucial to seek shade, wear protective clothing, and apply sunscreen regularly to minimize the risk of skin damage. As the UV Index decreases in the fall and winter, vigilance can be relaxed, but some level of sun protection remains advisable year-round.
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 |
| Ostrov | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |