Last updated: July 2, 2025
In La Roche-Chalais, France, being aware of the UV Index is essential for protecting your skin and overall health. Understanding UV levels helps in preventing sunburn and reducing the long-term risks of skin damage and conditions like skin cancer. Given the temperate oceanic climate (Cfb) of La Roche-Chalais, residents and visitors often face significant UV exposure, especially during peak hours when the index can soar to 9. By staying informed about the daily UV forecast, you can enjoy the sun safely and keep your skin healthy.
The UV Index throughout the day presents a clear rising trend in sun exposure. Starting in the morning, from 07:00 to 09:00, it remains low, peaking at 2 by 09:00. As the sun climbs higher, the index surges, reaching a moderate 4 by 10:00 and then escalating to a notable 6 at 11:00. The real intensity hits its peak between 12:00 and 15:00, soaring to a maximal level of 9—the prime time for sun safety awareness. As the afternoon progresses toward evening, the index gradually declines, falling to 3 by 18:00 and settling at 2 by 19:00. This dynamic fluctuation highlights the importance of being sun-smart during midday hours when UV exposure is at its strongest.
| 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 | 7 | high | 25 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 exhibits significant seasonal changes that impact sun exposure safety. The UV Index is at its lowest in January and December (2), indicating low risk for sunburn with a burn time of 45 minutes. As spring unfolds, March and April see a rise to moderate (UV Index 5) and high (UV Index 7) levels, respectively, with burn times decreasing to 30 and 25 minutes. The summer months, particularly May to August, present the highest risks, reaching a maximum of UV Index 10 in June, where just 15 minutes of exposure can lead to burns. July and August maintain very high levels (UV Index 9). As the year transitions into autumn, September sees a drop to high risk (UV Index 7) with a burn time of 25 minutes, while October and November return to moderate levels. Visitors and residents are strongly advised to take protective measures during high-risk months, especially from April to August, by wearing sunscreen, protective clothing, and seeking shade to minimize the risk of harmful 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 |
| La Roche-Chalais | 2 | 3 | 5 | 7 | 8 | 10 | 9 | 9 | 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 |