Last updated: May 3, 2025
In Potstejn, Czech Republic, being aware of the UV Index is essential for safeguarding your skin health and preventing sunburn. With typical summer days experiencing UV levels peaking at 7 around midday, understanding these fluctuations can make a significant difference in protecting yourself from harmful rays. Potstejn's Dfb climate presents unique challenges for sun exposure, with considerable UV risks even during seemingly mild weather. By familiarizing yourself with local UV Index patterns, you can enjoy outdoor activities more safely and effectively shield your skin from damage.
As the sun rises, the UV Index begins its slow ascent, starting at a mere 1 at 7:00 AM. By 8:00 AM, it climbs to 2, and as the clock strikes 9:00 AM, it reaches 3. The true intensity of the sun emerges around 10:00 AM, with the index leaping to 5. Just prior to noon, at 11:00 AM, it peaks at 6, but the real highlight comes at 12:00 PM, when it hits an impressive 7. This high continues until 2:00 PM, showcasing a strong midday sun before gradually easing off. By 3:00 PM, the index dips to 6, and by 4:00 PM, it further descends to 4. As the day winds down, the UV levels drop significantly; by 6:00 PM, it returns to 2, and finally settles back to 1 by 7:00 PM. Remember to protect yourself during those peak hours! ☀️
| 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels experience significant fluctuations, with high-risk months identified as April through August, during which the UV Index can reach as high as 8 and fall within the very high exposure category. Specifically, June and July are the peak months for UV exposure, requiring extra caution as the burn time shortens to just 15 minutes. In contrast, January, November, and December present the lowest UV indices, categorized as low exposure, allowing for safer outdoor activities with extended burn times of 45 minutes. To ensure safety, visitors and residents should remain vigilant in high-risk months, applying sunscreen, wearing protective clothing, and seeking shade during peak hours, while enjoying the more forgiving UV levels during the winter 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 |
| Potstejn | 2 | 3 | 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 |