Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Santa Rosa, Argentina, where the sunny climate can lead to significant UV exposure. Knowing the UV levels can help you effectively prevent sunburn and protect your skin health, particularly during the peak hours when the index reaches its maximum of 5 between midday and early afternoon. The Cfa climate of Santa Rosa means hot summers with strong sunlight, making awareness of UV risks even more essential to enjoy the outdoors safely. Stay informed and safeguard your skin!
As the sun rises to greet the day, the UV Index begins at a serene 0 at 07:00, indicating minimal risk for sun exposure. By 08:00 and 09:00, it gently warms up to a light 1, suggesting that a little sun protection might be wise. The real shift occurs by 10:00, when the index climbs to 2, signaling a moderate level of UV radiation. The peak is reached at 12:00, with a robust 5, urging everyone to seek shade and wear sunscreen for safety. The afternoon maintains this intensity until 14:00, before tapering off to 3 at 15:00. As the day winds down, the UV levels gradually decrease to 1 by 18:00 and finally return to 0 at 19:00, marking the end of a UV-rich day. Stay smart in the sun!
| 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 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | 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 exhibits significant seasonal variations, with the highest levels occurring during the first few months. January to March typically see extreme UV levels, peaking at 15, necessitating very short burn times of just 10 minutes. The risk remains high in November and December with an index of 14 and similar burn times. April marks a transition to a very high UV index of 10, while May to July shows a decrease to moderate levels, although August spikes back to high. September returns to very high, before dropping in winter months. Given this data, it's crucial for visitors and residents to exercise caution and limit sun exposure during high-risk months, particularly from January to March and November to December, while utilizing sunscreen and protective clothing during outings to prevent skin damage.
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 |
| Santa Rosa | 15 | 13 | 12 | 10 | 6 | 5 | 5 | 7 | 10 | 12 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |