Last updated: May 3, 2025
In San Martin de los Andes, Argentina, being aware of the UV Index is crucial for protecting your skin and overall health. The UV Index measures sun's ultraviolet radiation levels, which can significantly impact your skin, leading to sunburn and long-term damage. With a Cfb climate that includes sunny days and heightened UV exposure from morning to midday, understanding these levels is vital, particularly between 11:00 AM and 2:00 PM when the index peaks at 5. By staying informed, you can enjoy the beauty of this stunning region while safeguarding your skin against harmful effects.
At sunrise, the UV Index remained at a maximum of 0 until 9:00 AM, when it began to rise gently to 1. By 11:00 AM, it peaked at 2, but the real surge came as the sun approached its zenith. At 12:00 PM, the UV Index escalated to 4, reaching its highest point of 5 by 1:00 PM and again at 2:00 PM. As the afternoon wore on, the index decreased to 4 at 3:00 PM and gradually fell to 3 by 4:00 PM. By 5:00 PM, it dropped to 1, then further to 0 after sunset. This hourly chart illustrates the sun's powerful rays during midday, emphasizing the importance of sun protection during peak 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 | 2 | low | 45 min |
| 12:00 | 4 | 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 displays significant seasonal variations, with extreme levels observed from January through February and again in November and December, where burn times are as short as 10 minutes. High-risk months for UV exposure include January, February, November, and December, where advisories for protection are critical. As temperatures rise, the UV Index decreases slightly into moderate levels from May through July, but very high levels return in March and April, as well as September and October, with respective burn times around 15 to 30 minutes. Visitors and residents are advised to take protective measures during these high-risk months, including wearing sunscreen, protective clothing, and sunglasses, particularly when the index is rated high or extreme to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Martin de los Andes | 15 | 13 | 10 | 6 | 5 | 3 | 3 | 6 | 8 | 10 | 13 | 14 |
| 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 |