Last updated: July 2, 2025
Being aware of the UV Index is crucial for residents and visitors of Rojas, Argentina, where the subtropical climate can lead to significant sun exposure throughout the year. Understanding UV levels is essential not only for preventing sunburn but also for maintaining long-term skin health. The typical daily UV Index in Rojas peaks between 11:00 AM and 3:00 PM, where values reach a moderate to high level of 4, indicating a substantial risk of harm from unprotected sun exposure. With this knowledge, you can better protect yourself and enjoy the beautiful Argentine sun safely.
The UV Index skyrockets as the sun climbs higher, peaking at 12:00 PM with a level of 4, indicating a moderate risk of harm from unprotected sun exposure. As the daylight progresses, 07:00 starts at a cool 0, gradually rising to 1 by 08:00 and 09:00. By 10:00, it hits 2, and by 11:00, it reaches 3, setting the stage for that midday high. Later in the afternoon, from 12:00 to 14:00, the index maintains its strength at 4, before gently tapering off as the sun begins to set. By 19:00, it’s back to 0, marking the end of a sun-filled day. Stay protected during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 2 | low | 45 min |
| 11:00 | 3 | moderate | 30 min |
| 12:00 | 4 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 4 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels demonstrate significant seasonal variation, with January, February, March, November, and December classified in the extreme exposure category (UV Index 13 and higher), posing a serious risk with a burn time of just 10 minutes. As spring approaches, April sees a notable drop to very high levels (UV Index 8) with a slightly longer burn time of 15 minutes. May and June transition to moderate levels (UV Index 5 and 4), allowing for 30 minutes before succumbing to sunburn. The UV Index begins to climb again, peaking in August at high (UV Index 6) before returning to very high in September and October (UV Index 8-10), when burn times are reduced to 15 minutes. As residents and visitors plan outdoor activities, it is crucial to remain vigilant during the high-risk months of winter and late fall (November and December) as well as the spring (January to March). Regularly applying sunscreen, wearing protective clothing, and seeking shade during peak UV hours can help mitigate the risks associated with high UV exposure.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Buenos Aires UVI | 14 | 13 | 11 | 7 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Rojas | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 10 | 13 | 14 |
| Rosario UVI | 14 | 13 | 11 | 8 | 5 | 4 | 4 | 6 | 8 | 11 | 13 | 14 |
| Mendoza UVI | 15 | 14 | 12 | 8 | 6 | 4 | 5 | 6 | 9 | 12 | 14 | 15 |
| Cordoba UVI | 15 | 13 | 12 | 9 | 6 | 4 | 5 | 7 | 9 | 12 | 14 | 15 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |