Last updated: June 2, 2025
In San Vicente Tancuayalab, Mexico, understanding the UV Index is crucial for protecting your skin and overall health. With the region's warm Aw climate, residents and visitors must be aware of the daily variation in UV levels, especially during peak hours. High UV exposure can lead to painful sunburns and increase the risk of long-term skin damage. On sunny days, the UV Index can soar to 12 between noon and 2 PM, indicating a severe risk of harm from unprotected sun exposure. Staying informed about these levels not only aids in planning outdoor activities but also empowers you to take proactive steps against sun-related health issues.
As the sun rises, the UV Index starts off mild at 7:00 AM (1), gradually warming up to 2 by 9:00 AM. The intensity of ultraviolet rays reaches a notable 5 at 10:00 AM, but it’s during the peak hours around noon that the index skyrockets to its maximum of 12 at 1:00 PM. This high reading persists until 2:00 PM, presenting a strong reminder to stay protected from the sun’s rays. As the afternoon progresses, the UV Index begins to taper off, dropping to 11 at 3:00 PM and gradually declining to 1 by 7:00 PM. Whether you're planning outdoor activities or just soaking up the sun, be sure to take precautions during those high UV hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The seasonal UV changes are notable, with the highest UV Index recorded from March through September, remaining at an extreme level of 12 or higher. February marks the onset of very high UV levels, escalating to an extreme index of 12 in March, and peaking at 13 in July. As summer transitions to fall, UV Index values decrease, but notable high-risk months—including February through September—should prompt caution. Visitors and residents are advised to take preventive measures during these peak months, such as wearing sunscreen, protective clothing, and seeking shade, particularly during midday hours when UV exposure is at its highest. With burn times as short as 10 minutes during extreme months, vigilance is essential for skin safety.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Vicente Tancuayalab | 7 | 9 | 12 | 12 | 12 | 12 | 13 | 12 | 12 | 10 | 8 | 7 |
| 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 |