Last updated: May 3, 2025
Understanding the UV Index in Oyonnax, France is crucial for maintaining skin health and preventing sunburn. With the region’s Cfb climate, residents and visitors alike should be aware of the changing UV levels throughout the day, especially when they peak between 12 PM and 2 PM at a severe 8. This awareness helps in making informed choices about sun protection, particularly during the warmer months when the risk of overexposure to harmful UV rays increases significantly. By keeping an eye on the UV Index, you can enjoy the beautiful outdoor activities Oyonnax offers while safeguarding your skin from potential harm.
The UV Index throughout the day reveals a dynamic pattern of sun intensity. Starting the day gently at 1 during the early hours, the sun escalates its radiance by 09:00, reaching 2. As the morning blossoms into midday, we see a noticeable rise, peaking at 8 between 13:00 and 14:00—perfect for those seeking the sun's warmth. However, as the afternoon wanes, the intensity begins to retreat, dropping back to 4 by 17:00, and finally mellowing out to 1 by 19:00. It's a reminder to embrace sun safety during the peak hours of 11:00 to 14:00, where protection is vital! ☀️
| 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 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal changes in the UV Index highlight significant variations in sun exposure risk. From January to March, the UV Index gradually increases from a low level (2) in January to a moderate level (5) in March, with burn times decreasing from 45 minutes to 30 minutes. In April, the UV Index escalates to high (6), indicating a need for greater sun protection as burn time drops to 25 minutes. May through August presents the highest risk, with UV Index readings reaching very high (8-10) and burn times falling to a mere 15 minutes. September sees a decline to high (6), while October to December returns to moderate (3) and low (2) levels, allowing for longer exposure times of 30-45 minutes. Visitors and residents should take particular care during the high-risk months of May through August, ensuring to apply sunscreen and seek shade during peak hours to protect against harmful UV rays.
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 |
| Oyonnax | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 4 | 3 | 2 |
| 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 |