Last updated: June 2, 2025
In Belen, Argentina, being aware of the UV Index is essential for maintaining skin health and preventing sunburn, especially given the region's BSk climate characterized by hot summers and mild winters. Understanding the UV levels throughout the day enables residents and visitors to take necessary precautions and enjoy the outdoors safely. During peak hours, especially from 12 PM to 2 PM, the UV Index often rises to 6, which can pose significant risks for skin damage without proper protection. Staying informed about these levels is key to protecting yourself from harmful UV radiation while enjoying all that Belen has to offer.
The UV Index reveals a clear progression throughout the day, starting from a safe level of 0 at 07:00 and 08:00, where sun seekers can bask without worry. As the morning unfolds, it rises to a moderate 1 by 09:00, then climbs steadily to 2 at 10:00 and peaks at **6 during the 12:00 to 14:00 window—signaling a prime time for sun protection. Post-peak, the index gradually wanes, dropping to 4 at 15:00 and further descending to a 1 by 17:00. By the evening, the UV Index returns to 0 by 19:00, indicating a safe time to enjoy twilight activities without the sun's harsh rays. It's crucial to stay vigilant during the midday hours when UV levels are at their highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 0 | 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 |
Throughout the year, UV exposure varies significantly, peaking during the winter months and transitioning to lower levels in the summer. January, February, March, and April consistently show an extreme UV Index of 16-14, requiring only 10 minutes before burning occurs. The months of November and December also reflect extreme levels with indices at 16 and 17, respectively. Conversely, May to July display a slight decline, with very high and high ratings, where burn times extend to 15-25 minutes. September sees a return to extreme conditions at an 11 on the UV index. Visitors and residents should remain vigilant during high-risk months, particularly during winter with extreme levels, by wearing protective clothing, applying sunscreen frequently, and minimizing midday sun exposure. Staying informed about local UV conditions will help ensure a safe outdoor experience year-round.
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 |
| Belen | 16 | 16 | 14 | 11 | 8 | 6 | 7 | 8 | 11 | 14 | 16 | 17 |