Last updated: May 3, 2025
In Santo Tomé, Argentina, understanding the UV Index is crucial for safeguarding your skin against harmful ultraviolet radiation. With a Cfa climate that brings warm summers and moderate exposure, awareness of UV levels can help you prevent sunburn and maintain overall skin health. During peak hours, particularly from 11:00 AM to 1:00 PM, the UV Index can reach dangerous levels of 6, highlighting the need for proactive sun protection measures. Being informed about these levels not only allows you to enjoy the sunshine safely but also empowers you to take better care of your skin year-round.
At dawn, the UV Index starts at 0 at 07:00, signaling a safe time to step outside. As the sun rises, it gradually increases, reaching a moderate level of 2 by 09:00. The intensity peaks between 12:00 and 13:00, registering a high of 6, indicating that sun protection is essential during these hours. By 14:00, the index begins to decline, dropping to 5 before settling into a more manageable 4 by 15:00. A gentle decrease continues through the late afternoon, with levels falling back to 1 at 17:00, and finally back to 0 by 18:00. This data suggests that the most intense sun exposure occurs during midday, urging sun safety for outdoor activities during these hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The seasonal UV changes reveal significant fluctuations, with the highest UV Index levels recorded from January to March, where the index hits an extreme 15, necessitating only 10 minutes for skin to start burning. As spring approaches, April sees a decrease to a very high level of 10, allowing for slightly longer exposure at 15 minutes before burning. The summer months of May to July feature a moderate UV Index ranging from 5 to 6, with burn times extending to 25-30 minutes. However, high-risk months return in August, and from September to November, where UV levels reignite to extreme and very high categories. Notably, October and November pose significant risk again with indices of 13 and 14, respectively, allowing for just 10 minutes before burn. Residents and visitors are advised to take precautions, especially during January through March and October through November, by utilizing protective clothing, sunscreen, and limiting sun exposure during these peak times to avoid skin damage.
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 |
| 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 |
| Santo Tome | 15 | 14 | 12 | 10 | 6 | 5 | 5 | 7 | 10 | 13 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |