Last updated: July 2, 2025
In Jose de San Martin, Argentina, staying informed about the UV Index is essential for protecting your skin and overall health. Understanding UV levels can help you prevent sunburn and reduce long-term skin damage, which is especially important in this region's Cfb climate. With varying UV exposure throughout the day, ranging from a low of 0 in the early morning to a peak of 3 in the afternoon, it's crucial to know when to take precautions. By monitoring the UV Index, you can enjoy the outdoors safely while minimizing the risk of harmful effects from sun exposure.
The UV Index throughout the day exhibits a gentle rise, peaking in the early afternoon. Starting at 0 during the early hours (07:00 and 08:00), the index slowly ascends to 1 by 09:00 and remains steady until 11:00. At 12:00, it reaches 2, indicating a moderate level of UV exposure. The sun’s intensity escalates further, peaking at 3 from 13:00 to 15:00, which calls for some sun protection if you're outdoors. As the day winds down, the index decreases, returning to 2 at 16:00 and dropping back to 1 by 17:00 and 18:00, before falling to 0 again after sunset at 19:00. Overall, this UV journey underscores the importance of staying sun safe during the midday hours!
| 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 | 1 | low | 45 min |
| 11:00 | 1 | low | 45 min |
| 12:00 | 2 | low | 45 min |
| 13:00 | 3 | moderate | 30 min |
| 14:00 | 3 | 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, UV levels exhibit significant seasonal variation, with January and February marking the high-risk months due to extreme UV Index levels of 14 and 12 respectively, where burn time is as quick as 10 minutes. As spring unfolds, UV levels gradually decrease, peaking at 9 in March (very high) and then lowering to 6 in April (high). With the onset of summer, the UV Index drops to 2 in June (low), but starts rising again towards the fall, reaching 7 in September (high) and 9 in October (very high). November and December revert to extreme levels, again registering 14 and 13 respectively. Residents and visitors are advised to exercise caution during the extreme and very high months, particularly in January, February, and November, ensuring adequate sun protection such as sunscreen, hats, and protective clothing, especially if outdoor activities are planned.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jose de San Martin | 14 | 12 | 9 | 6 | 3 | 2 | 3 | 4 | 7 | 9 | 14 | 13 |
| 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 |