Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Castelnau-de-Médoc, France, particularly during the sun-filled summer months. With the region's Cfb climate, the risk of harmful UV exposure can vary significantly throughout the day, making it essential to stay informed. High UV levels, especially peaking between 12:00 PM and 3:00 PM with values reaching up to 9, pose a serious threat to skin health, leading to sunburn and long-term damage. By keeping a close eye on UV Index readings, you can take proactive measures to protect yourself and enjoy the beautiful outdoor environments this charming locale has to offer. Stay safe and sun smart as you bask in the beauty of Castelnau-de-Médoc!
The UV Index data for the day reveals a dynamic and intense sun exposure. Starting off with a maximum of 1 at 7:00 AM and 8:00 AM, it quickly rises to 2 by 9:00 AM. The sun reaches its peak intensity from 12:00 PM to 3:00 PM, hitting a scorching 9 during the hottest hours. As the afternoon wanes, the UV index gradually declines to 7 by 4:00 PM, then further to 5 at 5:00 PM, and eventually settling at a more manageable 2 by 7:00 PM. To stay safe and protect your skin, it's crucial to seek shade and apply sunscreen, especially during those midday hours when the UV Index 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 | 9 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal changes, impacting sun exposure and burn times. January and December see low UV levels (Index 2), with burn times of 45 minutes, while February and November moderate (Index 3), reducing burn time to 30 minutes. As spring arrives, March (Index 5) indicates a moderate risk before transitioning to April's high level (Index 7) with a burn time of 25 minutes. The peak risk occurs in May and June, where the UV Index reaches 8 to 9, categorizing exposure as very high and necessitating protective measures within just 15 minutes of sun exposure. July continues this trend, while August sees a slight decrease to 8. The UV Index tapers off in September (Index 7), October (Index 5), and November (Index 3), before returning to low levels in December. Visitors and residents are advised to take extra precautions during May through August, including wearing protective clothing, applying sunscreen, and seeking shade during peak hours to minimize the risk of UV exposure.
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 |
| Castelnau-de-Medoc | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 7 | 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 |