Last updated: August 1, 2025
In Saint-Donan, France, being aware of the UV Index is vital for maintaining skin health and preventing sunburn. As the sun rises higher in the sky, understanding the daily UV levels empowers residents and visitors to protect themselves from harmful radiation, particularly during peak hours when the index reaches 8 and 9. Given Saint-Donan's Cfb climate, the region experiences a unique blend of moderate temperatures and increased sun exposure, making it essential to stay informed about UV risks throughout the year. Safeguarding your skin starts with awareness—don't let the sun's rays catch you off guard!
As the sun rises, the UV Index begins at a gentle 1 at 07:00, remaining low until 09:00 when it climbs to 2. By 10:00, with the sun reaching its peak, the index escalates to 3, but the real intensity hits by 12:00, soaring to 7. The peak occurs at 14:00, where the UV Index peaks at an impressive 9, signaling a high need for sun protection. Even as the afternoon wanes, levels stay elevated, measuring 8 at 15:00 and gradually decreasing to 5 by 17:00. As the day draws to a close, the UV Index drops to 2 by 19:00, making way for a cooler evening. It's crucial to stay vigilant throughout the day, especially during those mid-afternoon hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV radiation levels fluctuate significantly, with distinct high-risk months emerging in the summer. From May to August, the UV Index is categorized as very high (ranging from 8 to 9), indicating that visitors and residents should exercise heightened caution, as the burn time decreases to just 15 minutes. April sees a transition to a high exposure category, while March starts in a moderate range. Conversely, the winter months, including January, November, and December, have a low UV Index (2), granting longer burn times of 45 minutes. To safeguard against skin damage, it's imperative for everyone to wear protective clothing, seek shade, and apply sunscreen during peak UV times, especially from late spring to the end of summer.
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 |
| Saint-Donan | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 5 | 2 | 2 |
| 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 |