Last updated: July 2, 2025
In Saint-Jean-le-Vieux, France, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels not only helps in preventing painful sunburns but also plays a significant role in reducing long-term skin damage. With a Cfb climate characterized by moderate summers, residents and visitors alike should be mindful of the increasing UV exposure, especially during peak hours when the index can soar to a high of 10. By staying informed about daily UV levels, you can enjoy the beautiful outdoors safely while maintaining your skin's health.
The UV Index data reveals a dynamic pattern throughout the day, starting off mild in the early morning with a maximum of 1 at both 7:00 and 8:00 AM. As the day unfolds, we see a steady climb, peaking at an intense 10 around 2:00 PM, making it crucial for sun safety during those heated hours. The afternoon heat gradually subsides, with the index decrementing to 9 at 3:00 PM and then tapering off to a more manageable 4 by 6:00 PM. This trend indicates the importance of protective measures from midday to early afternoon, while later hours offer a gentler UV exposure. Remember to stay safe and shield your skin when the sun is at its highest!
| 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 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Seasonal changes in UV exposure highlight significant variations throughout the year, with high-risk months identified primarily from April to August, where the UV Index peaks at 10 during June and July, indicating a very high exposure category and a rapid burn time of just 15 minutes. As spring transitions into summer, visitors and residents are urged to employ protective measures such as applying sunscreen, wearing protective clothing, and seeking shade during peak hours. Conversely, fall and winter months like January and December present lower UV indices, categorized as low, allowing for extended outdoor activity with a burn time of up to 45 minutes. Staying informed about UV levels can help ensure safe outdoor enjoyment year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Saint-Jean-le-Vieux | 2 | 4 | 5 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |