Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of La Seyne-sur-Mer, France, where the Mediterranean climate brings plenty of sunshine and potential skin risks. With UV levels reaching as high as 9 during the midday hours, awareness of these levels is essential for preventing sunburn and maintaining long-term skin health. By grasping the daily UV variations, you can make informed decisions about when to seek shade, apply sunscreen, and protect yourself from harmful rays. La Seyne-sur-Mer's beautiful coastal lifestyle offers abundant outdoor activities, but it's vital to prioritize your skin's safety under the sun.
As the sun rises, the UV Index starts at a maximum of 1 at 7:00 AM, indicating safe sun exposure. By 9:00 AM, it climbs to 2, suggesting that while it’s still mild, some caution is advisable. The index spikes significantly from 10:00 AM, reaching 4, and continues to rise throughout the day. At 12:00 PM, it peaks at an impressive 8, followed closely by a high of 9 at both 1:00 PM and 2:00 PM—perfect times to seek shade or lather on sunscreen! As the afternoon wanes, the UV Index gradually declines to 6 at 4:00 PM, then eases to 3 by 6:00 PM, finally dipping back down to 1 by the evening. Enjoy the sun, but remember to protect your skin during those midday highs!
| 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 | 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 |
Throughout the year, the UV Index reveals significant seasonal changes in sun exposure risks. January and December are the safest months, with a low exposure category and burn times of 45 minutes, while February and March indicate a moderate risk with an elevated UV Index of 4 and 5, respectively. The high-risk period peaks from April to August, where the UV Index climbs to very high levels, particularly in June (10) and July (9), warranting a burn time reduction to just 15 minutes. September sees a slight decrease to a high category (UV Index 7) while October through November return to moderate levels. Visitors and residents should take precautions during high-risk months by applying sunscreen, wearing protective clothing, and seeking shade, especially between April and August when the sun's intensity is at its highest.
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 |
| La Seyne-sur-Mer | 2 | 4 | 5 | 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 |