Last updated: May 3, 2025
In San Antonio, Argentina, being aware of the UV Index is crucial for maintaining your skin health and preventing sunburn. With a climate categorized as Cwb, residents and visitors alike are exposed to varying levels of UV radiation throughout the day, particularly peaking between 12:00 PM and 2:00 PM, when index values can soar to 8. Understanding these UV levels not only helps you plan your outdoor activities safely, but also mitigates long-term skin damage. As the sun shines brightly over this beautiful region, staying informed about UV risks can empower you to enjoy the outdoors while protecting your skin.
The UV Index throughout the day paints a vivid picture of sun intensity. Starting off at a cool 0 at 07:00, the index gradually rises, hitting 1 by 08:00. By 10:00, the sun has gained strength, reaching a moderate 3, but it’s over noon that the real heat kicks in. At 12:00, the UV index soars to 7, peaking at an intense 8 by 13:00 and 14:00. As the afternoon wanes, the UV intensity starts to drop—slipping to 6 by 15:00, and further down to 4 at 16:00. The evening brings a gentle reprieve, with values falling back to 2 at 17:00, 1 at 18:00, and finally returning to 0 by 19:00. Remember to stay sun-safe, especially 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 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
During the year, seasonal UV changes show particularly high levels from January to April and again in September to November, characterized by an extreme UV Index of 16-14, with a rapid burn time of just 10 minutes. May to August experience a slight decline, moving to very high and high categories, yet still require caution, especially in May and August with burn times of 15 minutes. Residents and visitors should take extra precautions during the high-risk months of January, February, March, April, September, October, November, and December, by wearing protective clothing, applying sunscreen diligently, and seeking shade, especially during peak sun hours, to minimize the risk of 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 |
| 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 |
| San Antonio | 16 | 15 | 14 | 11 | 8 | 6 | 7 | 9 | 11 | 14 | 16 | 16 |