Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Rozwienica, Poland, where the Cfb climate brings a mix of mild summers and cooler winters. Awareness of UV levels not only helps in preventing sunburn but also plays a key role in maintaining long-term skin health. With peak UV Index readings reaching as high as 8 during the summer months—particularly between 12:00 PM and 2:00 PM—it's essential to stay informed about potential exposure risks to enjoy the sunny days safely. By keeping an eye on the UV Index, you can take proactive steps to protect yourself and your loved ones from harmful ultraviolet rays.
The UV Index throughout the day reveals a notable peak in sun exposure between 12:00 PM and 1:00 PM, where it reaches a maximum of 8. Starting from the early morning at 7:00 AM with a minimal reading of 1, the index gradually climbs as the sun rises, hitting 3 by 8:00 AM and reaching 6 at 10:00 AM. The intensity continues to escalate, peaking at 11:00 AM with a 7, before reaching its zenith at 12:00 PM. Following this midday spike, the UV levels begin to decline, dropping back to 4 by 4:00 PM and tapering off to 3 by 5:00 PM. As the evening approaches, the index diminishes significantly, falling to 1 by 6:00 PM, making it crucial to seek shade or apply sunscreen during those peak hours for optimum skin protection.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 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 | 4 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences notable fluctuations throughout the year, influencing both sun exposure and risk levels for skin damage. During the winter months, from December to February, the UV Index remains low (1-2), allowing for longer burn times of 45 minutes, making this a relatively safer period for sun exposure. However, as spring approaches, particularly in March, the UV levels rise to a moderate index of 4, indicating the need for increased caution with a reduced burn time of 30 minutes. The high-risk months occur from late spring to mid-summer, with May reaching an index of 7 and June and July peaking at 8, categorized as very high, significantly shortening safe exposure to just 15 minutes. As summer transitions to fall, the risk reduces but remains considerable in August (UV Index 7) and September (UV Index 6), before tapering off in the fall months of October through December. Visitors and residents are advised to protect their skin during high UV periods by wearing sunscreen, hats, and protective clothing, particularly in the peak months from April to August.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Warsaw UVI | 1 | 2 | 4 | 5 | 6 | 8 | 8 | 7 | 5 | 3 | 2 | 1 |
| Poznan UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Lodz UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Wroclaw UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 |
| Krakow UVI | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Rozwienica | 2 | 2 | 4 | 6 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |