Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of San Jose de la Flores, Mexico, where the climate can elevate your exposure to harmful ultraviolet radiation. The UV Index provides essential information on sun intensity levels, helping you take proactive measures to prevent painful sunburn and maintain skin health. With peak UV levels in this region reaching as high as 13 around midday, it's particularly important to remain vigilant against sun damage, especially during the warmer months. By being aware of the UV Index, you can enjoy the beautiful Mexican sun while keeping your skin safe from its risks.
At sunrise, the UV Index remains low at 1 from 7:00 AM to 9:00 AM, making it a safe time for early outdoor activities. However, as the sun climbs higher, expect a notable increase at 10:00 AM with a UV Index of 5, signaling the need for caution. The intensity peaks spectacularly at 12:00 PM with a striking 11, reflecting the sun's zenith and urging sun protection measures. The afternoon sees an even sharper rise, reaching a maximum UV Index of 13 at 2:00 PM, where sun safety becomes paramount. As the day progresses, the index gradually declines, dipping back to 5 by 5:00 PM and tapering off to 1 by sunset at 7:00 PM. Enjoy the sunshine, but don’t forget to stay protected during those peak hours!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 0 | low | 45 min |
08:00 | 1 | low | 45 min |
09:00 | 2 | low | 45 min |
10:00 | 4 | moderate | 30 min |
11:00 | 7 | high | 25 min |
12:00 | 10 | very high | 15 min |
13:00 | 12 | extreme | 10 min |
14:00 | 13 | extreme | 10 min |
15:00 | 11 | extreme | 10 min |
16:00 | 8 | very high | 15 min |
17:00 | 5 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
As the seasons change, the UV Index fluctuations indicate varying levels of solar intensity, with high to extreme risk occurring primarily from February to September. March through August sees the highest UV Index values, peaking at 13 in July and August, representing an extreme exposure category where burn time is limited to just 10 minutes. Notably, visitors and residents should be particularly vigilant during these months and take protective measures such as wearing sunscreen, covering up, and seeking shade to mitigate the risks of sun damage. As the year progresses into late fall and winter, UV levels decrease, with the lowest values in December, but caution is still advised, particularly since even moderate UV exposure can be harmful.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
San Jose de la Flores | 7 | 9 | 11 | 12 | 12 | 12 | 13 | 13 | 12 | 10 | 8 | 6 |
Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
Iztapalapa UVI | 10 | 12 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
Ecatepec de Morelos UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
Mexico City UVI | 10 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 12 | 10 | 8 |
Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |