Last updated: July 2, 2025
In Osljak, Croatia, awareness of the UV Index is crucial for residents and visitors alike, as it plays a significant role in sunburn prevention and maintaining overall skin health. Understanding the various UV levels throughout the day can help you protect yourself during peak exposure times, especially when the index reaches its highest at 9 around noon. With Osljak's temperate Cfb climate, the sun can be deceptive; even on seemingly mild days, UV rays can pose risks to your skin. Stay informed and enjoy the beautiful Croatian sunshine safely!
The UV Index throughout the day tells a compelling story of sun exposure. Starting at a gentle 1 at 7:00 AM, it gradually rises, reaching 2 by 8:00 AM. As the clock ticks towards mid-morning, the intensity ramps up, peaking at 9 between 12:00 PM and 2:00 PM—the perfect time for a shaded respite or sunscreen application. By 11:00 AM, the index hits 7, signaling more significant sun intensity. As the afternoon wanes, it starts to dip, falling to 3 by 5:00 PM, and eventually returning to 1 by 7:00 PM. This data emphasizes the importance of sun protection, particularly during those peak hours, to ensure a safe and enjoyable day outdoors!
| 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 | 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 experiences notable seasonal changes, with significant increases from late winter into summer. January sees a low UV Index of 2, indicating minimal risk, while February and March rise to 4 and 5, respectively, where exposure becomes moderate. April marks the onset of high-risk periods with a UV Index of 7, peaking in May and June at 8 and 9, categorized as very high. This trend continues into July and August, where protective measures are essential due to the same high values of 9 and 8. By September, the UV Index decreases to 7, signaling a return to high risk but gradually moderating through October (5) and November (3) before dropping back to low levels in December. Visitors and residents are strongly advised to prioritize sun protection during the months of May through September, when the potential for skin damage is greatest, using protective clothing, sunscreen, and seeking shade during peak hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Osijek UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Zagreb UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 5 | 3 | 2 |
| Rijeka UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Osljak | 2 | 4 | 5 | 7 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Zadar UVI | 2 | 4 | 5 | 7 | 8 | 9 | 9 | 8 | 7 | 5 | 3 | 2 |
| Split UVI | 2 | 4 | 6 | 7 | 8 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |