Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Trelew, Argentina, especially given the area's unique climate and sun exposure. This index provides valuable insights into the potential risk of harmful UV radiation, helping you take necessary precautions to prevent sunburn and protect your skin health. Trelew typically enjoys a semi-arid climate (BSk), which can lead to increased UV levels during midday hours. By being aware of the UV Index and its daily variations, you can enjoy the outdoors safely while minimizing the risk of skin damage from the sun’s intense rays.
The UV Index for the day showcases a gradual rise as the sun climbs higher in the sky. From 07:00 to 08:00, the index remains at 0, indicating minimal risk. As the clock ticks towards 09:00, it starts to inch up to 1, where it stays consistent until 11:00. The midday sun brings a bit more intensity, peaking at 2 from 12:00 to 15:00, suggesting a moderate risk of harm from unprotected sun exposure. After 15:00, the UV Index begins to decline, settling back to 1 by 16:00 and dropping to 0 again by 19:00. To enjoy the sun safely, it’s wise to stay protected during those peak hours!
| 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 | 1 | low | 45 min |
| 11:00 | 1 | low | 45 min |
| 12:00 | 2 | low | 45 min |
| 13:00 | 2 | low | 45 min |
| 14:00 | 2 | low | 45 min |
| 15:00 | 2 | low | 45 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, the UV Index reveals significant seasonal variations, with January and December typically experiencing the highest levels at 13, categorized as extreme, resulting in a rapid burn time of just 10 minutes. This trend continues into February and November, which also present extreme risk, necessitating caution. The spring months of March and October see a decrease to 8, categorized as very high, allowing for slightly longer exposure times of 15 minutes. As summer approaches, UV levels drop in June and July to a low rating of 2, providing a safer environment for outdoor activities; however, caution should still be practiced. The fall brings a return to moderate (August) and high (September) exposure levels, with burn times ranging from 25 to 30 minutes. Visitors and residents should remain vigilant during high-risk months—especially from January to February and November—by utilizing sunscreen, protective clothing, and seeking shade to minimize UV exposure. Stay safe and enjoy your time outdoors!
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Trelew | 13 | 11 | 8 | 5 | 3 | 2 | 2 | 4 | 6 | 8 | 12 | 13 |
| 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 |