Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Rosport, Luxembourg, where the climate can bring varied sun exposure risks throughout the year. Awareness of UV levels is essential not only for preventing sunburn, but also for safeguarding long-term skin health. With maximum UV Index values reaching as high as 8 during midday hours in this temperate oceanic climate, it's vital to stay informed about the sun’s intensity to ensure you take the necessary precautions. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while protecting your skin from harmful effects.
As the sun rises, the UV Index begins at a mild 1 during the early hours (07:00 and 08:00), making it a safe start for morning activities. However, the intensity ramps up quickly, peaking at 8 between 13:00 and 14:00—a critical time where sun protection is essential. From 10:00 onward, the index steadily climbs to reach its midday high of 7 at 12:00, signaling the strongest UV exposure. As the day progresses, levels gradually decrease, dipping to 4 by 17:00 and returning to a safer 1 by 19:00. Stay vigilant during the peak hours for your skin’s safety!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | 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 |
As the seasons change, so do UV levels, significantly affecting both residents and visitors. Starting the year, January and November present a low UV Index (2), with a burn time of 45 minutes, making outdoor activities safer. Moving into February and March, the UV Index rises to 3 and 4 respectively, indicating a moderate risk with burn times of 30 minutes. The high-risk months begin in April with an Index of 6, decreasing burn time to 25 minutes, and peak in May and June where the Index reaches 8 and 9, categorized as very high, and necessitating protective measures within just 15 minutes of sun exposure. July and August maintain a very high level at 8 and 7 respectively, but with slightly longer burn times of 15 and 25 minutes. As summer wanes into September and October, the risk decreases, yet still stays notable at 6 and 4 with 25 and 30-minute burn times. Finally, the year rounds off with December, where UV levels drop to a low Index of 1, allowing for 45 minutes of safer outdoor exposure. To ensure safety, it is crucial for everyone to take appropriate sun protection measures, especially during the high-risk months from April to August.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rosport | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 7 | 6 | 4 | 2 | 1 |
| Luxembourg UVI | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 7 | 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 |