Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors in Castellane, France, where the sun's rays can be particularly intense during the summer months. Understanding the UV levels helps in preventing sunburn and maintaining long-term skin health, allowing you to enjoy the beautiful Mediterranean climate safely. On sunny days, especially around midday, the UV Index can reach as high as 9, indicating a significant risk of harm from unprotected sun exposure. With its Csb climate, Castellane offers stunning outdoor activities, but be vigilant—protect yourself and your loved ones by staying informed about the UV Index and taking necessary precautions!
As the sun rises, the UV Index gradually climbs, starting at a low of 1 by 07:00 and 08:00. The real leap begins at 09:00, where it reaches 3, escalating to 4 by 10:00. As noon approaches, the UV Index peaks at an impressive 9 from 13:00 to 14:00, making it crucial to take protective measures during those hours. Afterward, it begins to taper off, dropping to 6 by 16:00, and further declining through the late afternoon and evening, eventually falling back to 1 by 19:00. For those venturing outdoors, staying vigilant to the UV levels during the midday hours is essential for skin protection!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 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 |
As the seasons change, so do UV Index levels, significantly impacting exposure and burn times. From January to February, UV exposure is relatively low (UV Index 2-4), allowing for about 45 minutes of safe sun exposure, yet caution should still be exercised. March and April ramp up to high levels (UV Index 6-7), with burn times decreasing to 25 minutes. The summer months of May through August present the highest risk, as UV Index values hit 9-10, indicating very high exposure with a mere 15 minutes burn time—adequate sun protection is essential during this period. As autumn arrives, UV levels begin to drop; September returns to high (UV Index 7) with 25 minutes of burn time, followed by moderate levels in October (UV Index 5) and November (UV Index 3), allowing for 30 minutes of exposure before winter brings low levels once again in December (UV Index 2) with 45 minutes of safe sun time. Visitors and residents are advised to monitor the UV Index closely, especially during high-risk months (May to August), and take necessary precautions such as wearing sunscreen, hats, and protective clothing.
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 |
| Marseille UVI | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Castellane | 2 | 4 | 6 | 7 | 9 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |