Last updated: July 2, 2025
In Oster, Ukraine, being aware of the UV Index is crucial for safeguarding your skin against the sun's harmful rays. Understanding UV levels can help prevent sunburn and promote long-term skin health, especially during peak hours of exposure. With a Dfb climate that offers sunny days, the UV Index in Oster can reach levels as high as 8 around midday, posing significant risks for residents and visitors alike. By staying informed about daily UV levels, you can enjoy the beautiful outdoors while keeping your skin protected.
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 |
The UV Index exhibits significant seasonal changes, reflecting the sun's intensity throughout the year. From January to February, the UV levels remain low (UV Index 2), allowing for a burn time of 45 minutes, making these months relatively safe for outdoor activities. As spring approaches, March and April see a rise to moderate levels (UV Index 4 and 5, respectively) with shorter burn times of 30 minutes. The summer months of May to August pose the highest risks, particularly in June and July when the UV Index peaks at 8, corresponding to a very high exposure category and a burn time of only 15 minutes. September still carries a high risk (UV Index 6) before a gradual decline in October back to moderate levels (UV Index 3). November and December return to lower UV indices (UV Index 2 and 1), allowing for longer exposure times without risk. Visitors and residents should especially prioritize sun protection during May through September, employing sunscreen, hats, and seeking shade during peak hours to minimize UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oster | 2 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Kyiv UVI | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Kharkiv UVI | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Dnipro UVI | 2 | 3 | 5 | 6 | 7 | 8 | 8 | 8 | 6 | 4 | 2 | 1 |
| Donetsk UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Odessa UVI | 2 | 3 | 5 | 7 | 8 | 9 | 8 | 8 | 7 | 4 | 3 | 2 |