Last updated: July 2, 2025
In Santa Fe, Argentina, staying informed about the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels helps residents and visitors alike take appropriate precautions against the sun's harmful rays, especially during peak hours around midday when the index can reach as high as 5. With a Cfa climate characterized by hot summers, the risks of UV exposure are heightened, making it essential to monitor these levels regularly. Embrace the sun safely by knowing the UV Index in Santa Fe and protect your skin while enjoying the outdoors!
The UV Index throughout the day reveals a dynamic pattern of solar intensity. Starting with a maximum of 0 at 7 AM, it gradually rises to a moderate 5 at 1 PM, where the sun shines its strongest. By 12 PM, the UV Index hits 4, prompting the need for sun protection. The intensity begins to taper off in the afternoon, dropping to 3 by 3 PM, and further decreasing to 1 by 5 PM. As twilight approaches, the UV Index settles back to 0 by 7 PM, signaling the end of the day's sun exposure. Plan accordingly, especially during those peak hours!
| 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 | 4 | moderate | 30 min |
| 13:00 | 5 | moderate | 30 min |
| 14:00 | 4 | 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 |
The UV Index shows significant seasonal changes, with high-risk months occurring from January through March and again in October to December, all categorized as extreme with a burn time of just 10 minutes. April marks a transition to a very high exposure category, where burn time extends to 15 minutes, while May to August presents high to moderate conditions with burn times ranging from 25 to 30 minutes. As temperatures rise into summer, UV risks decrease slightly; however, September spikes again to very high levels. Visitors and residents are advised to take precautions during the high UV index months, which can include wearing protective clothing, using sunscreen, and seeking shade, particularly during peak hours to minimize the risk of 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 |
| Santa Fe | 14 | 13 | 11 | 8 | 6 | 4 | 5 | 6 | 9 | 11 | 14 | 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 |