Last updated: June 2, 2025
In Marly, Switzerland, staying aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps you take proactive measures against sunburn and long-term skin damage, especially during the peak hours when the index soars to a maximum of 10 around midday. With Marly's temperate oceanic climate (Cfb), residents and visitors alike should be mindful of the risks associated with UV exposure, as the sun's intensity can vary significantly throughout the day. Arm yourself with knowledge to enjoy the sun safely while preserving your health.
As the sun climbs higher in the sky, the UV Index reaches its peak intensity between 12:00 PM and 1:00 PM, with a striking value of 10—a clear indication that sun protection is essential during this time. The day starts off gently, with a maximum index of 1 at 7:00 AM, gradually rising to a moderate level of 3 by 9:00 AM. By 11:00 AM, we hit 7, and the intensity continues to soar, peaking at 9 around 12:00 PM. However, as the afternoon wanes, the index starts to decline, dropping to 8 at 3:00 PM, and cooling off to 4 by 5:00 PM. As evening approaches, the UV levels return to a milder 1 by 7:00 PM, marking the end of a sun-soaked day. Enjoy the sunshine, but don't forget to stay protected during those peak hours!
| 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 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 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 |
The UV Index experiences significant seasonal variation, with the highest levels occurring from March to August. During this period, the high-risk months are typically April through August, where the UV Index reaches its peak values of 8 to 10, indicating a very high exposure category and a quick burn time of just 15 minutes. In contrast, the winter months of January and December present lower UV Index values (2), categorized as low exposure, allowing for a longer burn time of up to 45 minutes. It is essential for both visitors and residents to take precautions during high UV Index months, such as wearing sunscreen, protective clothing, and seeking shade, especially between 11 a.m. and 4 p.m. when the sun’s rays are strongest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Bern UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 2 |
| Zurich UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 2 |
| Marly | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 8 | 6 | 5 | 3 | 2 |
| Geneve UVI | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Lausanne UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |