Last updated: July 2, 2025
Understanding the UV Index in Santiago del Estero, Argentina, is crucial for residents and visitors alike, as it provides essential insights into daily sun exposure and skin safety. With the region's BSh climate, characterized by hot summers and plenty of sunshine, awareness of UV levels can greatly assist in preventing sunburn and protecting skin health. Typically peaking at a UV Index of 6 around midday, understanding these levels helps you take proactive measures during outdoor activities, ensuring that you enjoy the beautiful weather safely while minimizing long-term skin damage.
The UV Index throughout the day exhibits a significant rise, peaking at 6 between 1 PM and 2 PM. Mornings start off with minimal exposure, as the index remains at 0 until 7 AM. By 8 AM, it climbs to 1, gradually reaching 2 by 10 AM. The afternoon sun intensifies exposure, with a steady increase to 3 at 11 AM, and then a notable jump to 5 at noon. After its peak, the UV Index begins to decline, dropping to 4 by 3 PM and further to 1 by 6 PM, before settling back at 0 by 7 PM. It's a reminder to stay protected during the midday hours when UV radiation is at its strongest!
| 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 | 5 | moderate | 30 min |
| 13:00 | 6 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, with the highest values peaking during the winter months. January, February, and March are particularly high-risk months, each with an extreme UV Index of 15 to 13, resulting in a rapid burn time of just 10 minutes. Following this, April transitions to a very high exposure level with a UV Index of 10, where the burn time increases to 15 minutes. By late spring and summer, the UV Index starts to moderate, with values dropping to 7 in May, July, and August, and a burn time of 25 minutes. As the year progresses into fall, the UV Index again reaches very high levels in September (UV Index 10) and climbs back to extreme in October (UV Index 12) and November, returning to 15 in December. Visitors and residents should exercise caution and practice sun safety during these high-risk months, such as applying sunscreen, wearing protective clothing, and limiting sun exposure, particularly during peak hours.
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 |
| Santiago del Estero | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 12 | 15 | 15 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |