Last updated: May 3, 2025
In Colonias Unidas, Argentina, understanding the UV Index is crucial for safeguarding your skin against harmful ultraviolet radiation. As the sun reaches its peak, especially around midday, UV levels can escalate, raising the risk of sunburn and long-term skin damage. With a Cfa climate, characterized by warm summers and moderate winters, Colonias Unidas experiences significant UV exposure, particularly during the hottest hours. By staying aware of the UV Index, you can effectively plan your outdoor activities and take necessary precautions to protect your skin health and enjoy the beautiful Argentine sunshine safely.
The UV Index data paints a vivid picture of the sun's intensity throughout the day. Starting from a low of 0 at 7:00 AM, the UV levels begin to rise gradually. By 10:00 AM, it reaches a moderate level of 3, but the real surge occurs around noon, when it peaks at a high of 6. This intensity continues to climb, hitting its maximum at 1:00 PM with a UVI of 7, indicating a very high risk of harm from unprotected sun exposure. The afternoon sees a gradual decline, dropping to 4 at 3:00 PM, then back to a minimal level of 1 by 5:00 PM. As the sun sets, the UV Index dwindles, returning to 0 by 7:00 PM, marking the day's end for UV exposure. Make sure to protect your skin during the peak hours of the day!
| 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 | 6 | high | 25 min |
| 13:00 | 7 | high | 25 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 4 | 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 exposure varies significantly, with extreme levels persisting from January through March, where the UV Index reaches 14 and burn times are as short as 10 minutes. Following this, April marks a transition to very high exposure at a UV Index of 10 (burn time 15 minutes), which continues through August, with notable spikes in February, November, and December returning to extreme levels. May and July see a decline to high levels, while June offers moderate exposure. Post-summer, September returns to very high with a UV Index of 10. Visitors and residents are strongly advised to take precautions during high-risk months—especially from January to March and in November and December—by seeking shade, wearing protective clothing, and applying sunscreen regularly to mitigate health risks associated with intense UV radiation.
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 |
| Colonias Unidas | 14 | 14 | 13 | 10 | 7 | 5 | 6 | 8 | 10 | 13 | 14 | 14 |
| San Miguel de Tucuman UVI | 15 | 14 | 13 | 10 | 7 | 5 | 6 | 7 | 10 | 13 | 15 | 15 |