Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Santa Rosa, Argentina, where the sun’s intensity can vary significantly throughout the day. With the typical BWk climate, the risk of UV exposure peaks between late morning and early afternoon, necessitating awareness to prevent sunburn and protect skin health. During these hours, UV levels can soar, reaching up to 5 at noon, making it essential to monitor daily UV forecasts and adopt sun safety practices. By being informed about UV levels, you can enjoy the beautiful Argentine sunshine while ensuring your skin remains safe and healthy.
The UV Index throughout the day presents an intriguing pattern of sun exposure. Starting at a gentle 0 during the early hours (07:00 and 08:00), it creeps up to 1 by 09:00, a reminder to enjoy the shade. By 10:00, it registers a 2, marking the emergence of more intense sunlight. As the day progresses, the index peaks at 5 between 12:00 and 14:00, indicating the strongest UV radiation, perfect for a midday stretch outdoors—but remember to protect your skin! Following this peak, the index gradually recedes, falling to 4 at 15:00 and declining further to 1 by 17:00, before settling at 0 again by nightfall at 19:00. A day well spent under the sun, but always with awareness!
| 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 | 5 | moderate | 30 min |
| 14:00 | 5 | moderate | 30 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 seasonal variation, with extreme levels in the winter months (January to March) and late fall (October to December), where the burn time is as short as 10 minutes. High-risk months for UV exposure include January, February, March, October, November, and December, with indices reaching up to 15. Transitioning into spring and summer, the index drops to very high levels in April and September, with burn times increasing to 15 minutes. From May to July, the risk decreases to moderate, allowing for longer exposure times of 30 minutes. Visitors and residents are advised to take precautionary measures during high UV months, such as wearing protective clothing, applying sunscreen, and seeking shade, particularly during the peak sun 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 |
| Santa Rosa | 15 | 13 | 12 | 8 | 5 | 4 | 4 | 6 | 8 | 12 | 14 | 15 |
| 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 |