Last updated: May 3, 2025
In Saint-Thomas, France, being aware of the UV Index is crucial for protecting your skin and overall health. The UV Index provides valuable information about the levels of ultraviolet radiation, helping residents and visitors alike to understand the risks of sun exposure. With the region's Cfb climate, Saint-Thomas enjoys a temperate climate, but this means that UV levels can peak unexpectedly—reaching up to 9 during midday hours. Understanding these levels is key to preventing sunburn, minimizing skin damage, and ensuring safe outdoor activities, especially when the sun is at its strongest between noon and 2 PM. Stay informed, stay protected, and enjoy the stunning surroundings responsibly!
As the sun rises, the UV Index begins its journey, peaking at 1 by 7:00 AM and 8:00 AM, indicating a low risk of harm from unprotected sun exposure. However, by 9:00 AM, it escalates to 2, nudging us to be more cautious. The afternoon hours bring a notable increase, with the index reaching 4 at 10:00 AM, advancing to 5 by 11:00 AM. The real intensity hits around 12:00 PM, soaring to 7, followed by an impressive peak of 9 at 2:00 PM. As the day winds down, the UV Index gradually declines, dropping to 8 at 3:00 PM, then easing to 7, 5, 3, and finally settling at 2 by 7:00 PM. This data serves as a reminder of the sun’s potency, especially during midday, emphasizing the importance of sun protection during 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 | 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, seasonal changes in UV exposure highlight significant fluctuations in the UV Index. The months of May through August are particularly high-risk, with UV Index values reaching a peak of 10, indicating very high exposure and a burn time of only 15 minutes. Visitors and residents should remain vigilant during these months, employing protective measures such as sunscreen and clothing, especially between 10 AM and 4 PM when UV exposure is strongest. March and April also show increased risk with UV Index values of 6 and 7 respectively. Conversely, January and December present lower risk levels, with UV Index values of 2 indicating low exposure and longer potential burn times of 45 minutes. It is essential to monitor UV levels year-round and adjust sun protection strategies accordingly to ensure safety.
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 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |
| Saint-Thomas | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |