Last updated: May 3, 2025
Awareness of the UV Index is crucial for residents of Grefrath, Germany, as it serves as a vital tool for understanding the sun's intensity and protecting our skin from harmful exposure. With high UV levels peaking at 7 during midday, it's essential to grasp these fluctuations to prevent sunburn and promote long-term skin health. Grefrath's Cfb climate means residents can enjoy a variety of outdoor activities, but it also entails knowing when to seek shade or apply sunscreen. Understanding UV levels not only safeguards our well-being but also enhances our outdoor experiences in this beautiful region.
As the sun rises, the UV Index begins at a gentle 1 at 07:00, ensuring a low risk of harm from unprotected sun exposure. By 09:00, it escalates to 2, prompting early birds to start thinking about sun protection. The real warmth begins to be felt at 10:00 with a 4 on the scale, turning up the heat as it hits 5 by 11:00. The sun reaches its zenith at 12:00, peaking with a 7, and it sustains this intensity until 14:00, offering a high risk of harm to unprotected skin. As we move through the afternoon, the index gradually declines, dropping to 6 by 15:00 and easing to 3 by 17:00. Finally, the evening brings a return to safety with values falling back to 1 by 19:00, welcoming the coolness of dusk. Take care to protect your skin, especially during those midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 7 | high | 25 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, UV Index values fluctuate significantly, indicating varying levels of sun exposure risk. The high-risk months are from May to August, where the UV Index reaches its peak at 7-8, classifying them as high to very high exposure. Specifically, June and July present the greatest risk, with a burn time of only 15 minutes. In contrast, the winter months (January, February, November, and December) show a low exposure category with UV Index values of 1-2, allowing for longer safe sun exposure (up to 45 minutes). To ensure safety, it is advisable for visitors and residents to take protective measures during the high UV months, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hamburg UVI | 1 | 2 | 3 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
| Berlin UVI | 1 | 2 | 4 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
| Koeln UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Grefrath | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Frankfurt am Main UVI | 2 | 3 | 4 | 5 | 8 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Munich UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |