Last updated: May 3, 2025
In Rosario de la Frontera, Argentina, understanding the UV Index is crucial for safeguarding your skin and overall health. With the region's Cwa climate bringing bright, sunny days, UV radiation can escalate quickly, peaking at an impressive 8 around mid-afternoon. Awareness of UV levels is essential not only for preventing painful sunburns but also for protecting against long-term skin damage, such as premature aging and skin cancer. By keeping an eye on the UV Index, residents and visitors can enjoy the sun safely while minimizing their exposure to harmful rays.
As the sun rises, the UV Index remains low at 0 by 7:00 AM, gradually nudging up to 1 by 8:00 AM and 9:00 AM. A noticeable climb begins at 10:00 AM, reaching 3, and by 11:00 AM, it soars to 5—a signal that sun protection becomes increasingly essential. The peak intensity occurs at 1:00 PM, hitting 8, a reminder to seek shade or don sunscreen. The UV Index begins to taper off post-peak, descending to 7 by 2:00 PM and then to 6 at 3:00 PM. As the afternoon wanes, the UV levels decrease further, settling at 3 by 4:00 PM and dropping to 1 by 6:00 PM, before falling back to 0 after sunset. Take care of your skin during these hours when the sun's rays are at their strongest!
| 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 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal variation, with extreme levels persisting from January to April, where it consistently reaches values between 14 and 16, necessitating a burn time of just 10 minutes. As temperatures rise, the index begins to decline, dropping to a very high category in May and August (with indexes of 8) and transitioning to high levels during June and July (indexes of 6 and 7, respectively), allowing for a longer burn time of 25 minutes. However, September and October see a resurgence to extreme levels (indexes of 11 and 14), coupled with a return to a 10-minute burn time. Notably, November and December also maintain extreme UV conditions, reiterating the need for caution with a 10-minute burn time. Visitors and residents are advised to take proactive measures during high-risk months (January through April and September through November) by wearing protective clothing, applying sunscreen frequently, and minimizing direct sun exposure during peak hours to mitigate the risks associated with high UV exposure.
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 |
| Rosario de la Frontera | 16 | 15 | 14 | 11 | 8 | 6 | 7 | 8 | 11 | 14 | 16 | 16 |