Last updated: July 2, 2025
In the picturesque town of Cachi, 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 proactive measures against harmful ultraviolet rays, especially during the peak hours of sunlight. With a Cwb climate that includes warm days and plenty of sunshine, Cachi sees UV indexes that can rise significantly, reaching levels of 9 during midday. By being aware of these fluctuations, you can enjoy the beautiful outdoors while protecting your skin from potential harm.
As the sun rises, the UV Index gradually climbs from a maximum of 0 at 07:00 to a peak of 9 by 13:00 and 14:00, indicating a notably high risk of harm from unprotected sun exposure during those hours. From the morning's measured 1 at 09:00, it swiftly increases, reaching a moderate 3 at 10:00 and escalating to a strident 5 at 11:00. By noon, at 12:00, it's imperative to take precautions as the index reaches 7. The afternoon subsides slightly, tapering back to 5 at 16:00, and then dwindles to a comfortable 2 by 17:00, 1 at 18:00, and returns to 0 after sunset at 19:00. For optimal sun safety, it’s advisable to seek shade and protect your skin during the peak hours of 11:00 to 15:00.
| 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 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV exposure varies significantly, with notable high-risk months typically found in the winter and early spring, where the UV Index peaks at 19. From January to April, the UV Index remains in the extreme category, suggesting a burn time of just 10 minutes. Specifically, December marks the highest index at 20, indicating an urgent need for sun protection. As we move into late spring and summer, the UV Index begins to decrease slightly, with May and July showing very high levels at 10 and 9, respectively, allowing a burn time of up to 15 minutes. Conversely, June sees a drop to a high level of 7, permitting a longer exposure time of 25 minutes. However, as fall approaches, the UV Index spikes again in August and September to the extreme category, alongside elevated levels in the months that follow. It is crucial for both visitors and residents to prioritize sun safety, wearing protective clothing and sunscreen during these high UV index months, especially from January to April and again in August through November.
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 |
| Cachi | 19 | 19 | 17 | 14 | 10 | 7 | 9 | 11 | 14 | 17 | 18 | 20 |