Last updated: August 1, 2025
In San Juan Epatlan, Mexico, awareness of the UV Index is crucial for protecting your skin from harmful sun exposure. With the region's Cwa climate, characterized by warm summers and mild winters, understanding the daily UV levels can help residents and visitors alike prevent sunburn and promote long-term skin health. During peak sunlight hours, especially between noon and 2 PM, UV Index levels can soar to 14, indicating extreme risk of harm from unprotected sun exposure. Staying informed and taking precautions is essential to enjoy the beautiful sunshine while keeping your skin safe!
The UV Index throughout the day showcases a notable rise, peaking dramatically at 14 between 12:00 PM and 1:00 PM. Early morning starts off mild, with values of 1 at 7:00 AM and 8:00 AM, gradually increasing to 2 by 9:00 AM. As the sun ascends, the intensity intensifies, hitting 5 by 10:00 AM and surging to 9 by 11:00 AM. By midday, the index reaches a scorching 12, a clear warning to take precautions. As the afternoon progresses, it maintains high levels at 14 until 2:00 PM, before tapering off to 12 at 3:00 PM, then retreating to 9 at 4:00 PM. Finally, the UV Index descends to 3 by 6:00 PM, and concludes the day at a safe 1 by 7:00 PM. Remember, during peak hours, it's crucial to shield your skin from harmful UV rays!
| 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 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 14 | extreme | 10 min |
| 15:00 | 12 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV Index readings exhibit significant seasonal variation, with the highest levels occurring from March to September where the index consistently reaches 14 and is classified as extreme. January and November present very high indices of 10, with a burn time of 15 minutes, while December features a slightly lower index of 9. Visitors and residents are particularly at risk during the months of February through October, where the burn time drastically shortens to just 10 minutes due to the extreme UV exposure. It is essential for individuals to take proactive measures during these high-risk months by wearing protective clothing, applying sunscreen, and seeking shade to reduce the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Guadalajara UVI | 9 | 11 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 9 | 8 |
| San Juan Epatlan | 10 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 9 |
| 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 |