Last updated: June 2, 2025
In Bohumín, Czech Republic, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. As a city characterized by its Cfb climate, residents experience varying UV levels throughout the day, which can peak as high as 8 during midday hours. Being aware of these levels helps you protect your skin from harmful rays, ensuring outdoor activities remain enjoyable and safe. Knowing when to seek shade or apply sunscreen can make all the difference in your summer experience, especially with the increased risk of skin damage during those sunny months. Stay informed and keep your skin protected!
As the day unfolds, the UV Index rises steadily, peaking at 8 during midday hours, specifically at noon and 1 PM. This indicates a higher risk of harm from unprotected sun exposure, making it essential to take precautions during these hours. Starting the morning with a mild 1 at 7 AM, the UV Index climbs to 2 by 8 AM, gradually intensifying as it reaches 4 at 9 AM, and 6 at 10 AM. The intensity continues to soar as we approach noon, with 7 at 11 AM, before hitting that critical 8. As the afternoon progresses, there’s a gradual decline, with levels decreasing to 7 at 2 PM, then to 6 at 3 PM, and finally dipping to 3 by 5 PM. By evening, the UV Index settles back down to 2 at 6 PM and ultimately returns to a safe 1 by 7 PM, signaling a day of fluctuating sun exposure risks, highlighting the importance of sun safety throughout the 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 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 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 |
Throughout the year, the UV Index exhibits significant seasonal variations, with peak levels typically occurring during the summer months. January and February have low UV ratings (Index 2), allowing for relatively prolonged exposure without risk of burning (45 minutes). As spring approaches, March (Index 4) and April (Index 5) see a shift to moderate levels, reducing safe exposure times to 30 minutes. The high-risk months are May through August, where the UV Index reaches its highest points—7 to 8—requiring caution with burn times of just 15-25 minutes. September remains a high-risk month (Index 6) before it tapers back to moderate values in October (Index 4). By November and December, UV exposure risks reduce significantly. Residents and visitors are advised to stay vigilant during peak UV months, wearing protective clothing and sunscreen, especially between late spring and summer, to safeguard against skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bohumin | 2 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| 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 |