Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Villers-sous-Saint-Leu, France, where the climate falls in the temperate Cfb zone. With UV levels peaking at a notable 8 between 1 PM and 2 PM, awareness of these readings is essential for preventing sunburn and protecting skin health. As moderate UV exposure can lead to both immediate and long-term consequences—ranging from painful burns to increased skin cancer risk—being informed about daily fluctuations can help you enjoy the sun safely. In Villers-sous-Saint-Leu, knowing when to seek shade or apply sunscreen is key to safeguarding your skin while enjoying the beauty of this charming locale.
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 at 07:00 and remaining low until 09:00, when it climbs to 2. The midday sun showcases its strength, peaking at 12:00 with an impressive 7. By 13:00 and 14:00, the index reaches its zenith at 8, signaling a time for caution and protection against harmful rays. Thankfully, the intensity starts to wane after 15:00, dropping to 7, and continuing its descent to 4 at 17:00. As the day draws to a close, the index falls back to a safer 1 by 19:00, providing a gentle reminder of the sun's power and the importance of sun safety to enjoy the outdoors wisely.
| 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 | 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 |
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Villers-sous-Saint-Leu | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Paris UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Lyon UVI | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 5 | 3 | 2 |
| Nice UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Marseille UVI | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |