Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Yerba Buena, Argentina, a city frequently bathed in sunlight due to its Cwa climate. Being aware of UV levels helps prevent sunburn and protects your skin health, making it essential for anyone spending time outdoors. As the day progresses, UV levels peak between 12:00 PM and 2:00 PM, reaching a maximum of 6, which indicates a high risk for harm if protective measures aren’t taken. With these insights, you can enjoy the beautiful weather while safeguarding your skin against potential damage.
As the sun rises, the UV Index starts at a low 0 at 07:00, signaling a safe start to the day. By 08:00, it barely creeps up to 1, continuing to hover at that level until 09:00. The intensity begins to build as 10:00 rolls around, reaching 2, and then escalates significantly through the morning. By 12:00, the index hits 5, and it peaks at 6 between 13:00 and 14:00, marking the hottest hours of the day. As the sun begins its descent, the UV Index drops to 5 at 15:00, then steadily declines to 3 by 16:00. As evening approaches, the UV danger wanes, returning to 1 by 17:00 and ultimately back to 0 by 19:00. This data underscores the importance of sun protection, especially during peak hours between 12:00 and 14:00.
| 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 | 5 | 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 exhibits significant seasonal variations, with the highest risk occurring during the winter and early spring months of January through March, where the index hovers between 14 to 15 and is categorized as extreme, allowing for a burn time of just 10 minutes. November and December also remain critical months with an index of 15, emphasizing the need for protective measures. As spring approaches into April and September, the UV Index drops to 10—still within the very high exposure category, with a burn time of 15 minutes. Moving into the summer, from May to August, the risk reduces somewhat with indices of 7 to 6, categorized as high to moderate, allowing for slightly longer safe exposure times. Visitors and residents should take priority in protecting their skin, particularly during high-risk months—applying sunscreen, wearing protective clothing, and seeking shade—especially in those extreme months for their safety.
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 |
| Yerba Buena | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |