Last updated: June 2, 2025
Understanding the UV Index is crucial for the residents of Holzem, Luxembourg, as it provides essential information on the levels of ultraviolet radiation reaching the earth’s surface. Being aware of UV levels helps in preventing sunburn and safeguarding skin health, empowering individuals to enjoy the outdoors responsibly. With Holzem's Cfb climate bringing mild summers and moderate UV exposure, it's important to stay informed—especially during peak hours, when the UV Index can soar to 9 around midday—signaling a high risk for harm. Prioritizing UV awareness ensures that you and your loved ones can protect against the sun’s potentially damaging effects while reveling in the beauty of our vibrant surroundings.
Radiating through the early hours, the UV Index begins with a gentle 1 at 07:00, gradually climbing to 2 by 08:00. As the sun ascends, so does the intensity, peaking at 9 by 13:00, indicating the day's highest UV exposure. A slight dip occurs as the clock ticks past the afternoon, with values decreasing to 6 at 16:00 and further to 4 by 17:00. As the day transitions to evening, the index falls back to 3 at 18:00 and concludes at a modest 1 by 19:00. This hourly progression highlights the importance of sun safety, particularly during the midday hours when protection is essential!
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant fluctuations, with high-risk months identified primarily from April to August, where the index peaks at an alarming 9 in June. During these months, the exposure category escalates to very high, resulting in a burn time of just 15 minutes for unprotected skin. In contrast, January, November, and December have low UV levels, making sun protection less critical, with burn times extending to 45 minutes. As such, it’s essential for both visitors and residents to stay vigilant during the peak months by applying broad-spectrum sunscreen, wearing protective clothing, and seeking shade, especially between 10 AM and 4 PM, when UV rays are strongest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Luxembourg UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 7 | 6 | 4 | 2 | 1 |
| Holzem | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Bettembourg UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Schifflange UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Dudelange UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Esch-sur-Alzette UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |