Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Castelnau-Montratier, France, where the warm Cfb climate can lead to varied UV exposure risks. As the sun reaches its peak intensity, awareness of UV levels becomes essential for preventing sunburn and protecting skin health. During the mid-afternoon, the UV Index can soar to a high of 9, underscoring the importance of taking precautions to minimize potential harm from the sun. By staying informed about daily UV fluctuations, you can enjoy the beautiful outdoors while safeguarding your skin against long-term damage.
The UV Index throughout the day exhibits a noticeable rise, peaking in the early afternoon. Starting at 7:00 AM, the index is a manageable 1, but by 10:00 AM, it surges to a 4. The real intensity is felt between 12:00 PM and 2:00 PM, where it reaches a maximum of 9 at 2:00 PM, signaling a significant risk for skin damage without protection. As the sun starts to descend, the index gradually decreases, landing back at a 2 by 7:00 PM. For those planning outdoor activities, it's crucial to remain mindful of sun exposure, especially during the peak hours!
| 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 | 9 | 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 |
The UV Index exhibits notable seasonal variations, with high and very high levels prevalent during the warmer months. From March to August, the UV Index peaks, particularly in June and July when it hits 10, posing a significant risk for sunburn with a burn time of just 15 minutes. May also sees a very high index at 8, while April and September reach a high level of 7. Conversely, the winter months of January and December present a much lower risk, categorized as low exposure with burn times of 45 minutes. Residents and visitors are advised to take extra precautions—such as applying sunscreen, wearing protective clothing, and seeking shade—during the high-risk months of March through August, especially on sunny days, to mitigate the harmful effects of increased UV radiation.
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 |
| Castelnau-Montratier | 2 | 3 | 6 | 7 | 8 | 10 | 10 | 9 | 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 |