Last updated: June 2, 2025
Awareness of the UV Index is crucial for residents and visitors of Bosanska Krupa, Bosnia and Herzegovina, as understanding the levels of ultraviolet radiation can significantly impact skin health. With peak UV levels reaching a high of 9 around noon, the risks of sunburn and long-term skin damage climb, especially during the warm summer months typical of the region's Cfb climate. By staying informed about daily UV fluctuations, individuals can take proactive measures to protect their skin, ensuring safe and enjoyable outdoor experiences in this beautiful town.
The UV Index throughout the day presents a clear pattern of intensity, peaking at midday. Starting from a mild level of 1 at 07:00, the index rises steadily, reaching 2 by 08:00. The real surge occurs between 09:00 and 13:00, where it escalates from 4 to a striking 9—the highest point of the day. As the afternoon unfolds, the intensity slightly declines to 7 at 15:00, before tapering off to 5 at 16:00. The evening sees a further decrease, settling back to 2 by 18:00 and returning to 1 at 19:00. For those enjoying outdoor activities, it’s essential to take precautions, especially during the peak hours from 11:00 to 14:00 when the UV rays are most potent.
| 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 | 8 | very high | 15 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | 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 fluctuates markedly, with high-risk months typically occurring from April to August. During this period, the UV Index regularly reaches very high levels, particularly in May, June, and July, where a burn time of just 15 minutes indicates an increased risk of skin damage. As the year transitions towards autumn and winter, the UV Index drops to moderate and then low, with safer exposure times of 30 to 45 minutes in effect during the colder months. Visitors and residents are advised to take precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when the sun's rays are strongest. Staying informed about the daily UV Index can help ensure safe and enjoyable outdoor activities year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bosanska Krupa | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Banja Luka UVI | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Tuzla UVI | 2 | 4 | 6 | 7 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Zenica UVI | 2 | 4 | 6 | 7 | 8 | 10 | 10 | 8 | 7 | 5 | 3 | 2 |
| Mostar UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |
| Sarajevo UVI | 3 | 4 | 7 | 8 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |