Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Metlapa, Mexico, where the tropical climate brings not only warmth but also heightened sun exposure risks. With UV levels hitting a peak of 14 around midday, it's essential to grasp the implications of these readings for effective sunburn prevention and to maintain skin health. Knowledge of UV intensity can help you make informed choices about sun protection, especially during the hours of the day when the sun's rays can be most damaging. In a region known for its bright, sunny days, staying aware of the UV Index ensures that you can enjoy the beauty of Metlapa while safeguarding your skin against harmful effects.
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 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 9 | 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 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels exhibit significant seasonal fluctuations, with the highest risks occurring from February to September, where the UV Index consistently reaches extreme levels of 12 to 14. During these months, the burn time is as short as 10 minutes, making it crucial for both visitors and residents to take protective measures. The peak UV Index occurs in April, June, July, and September at 14, marking them as particularly hazardous months. In contrast, from November to January, UV levels decrease, but January and February still present high (10-12) and extreme risks. Therefore, individuals are strongly advised to utilize sunscreen, wear protective clothing, and seek shade, especially during the high-risk months to minimize UV exposure.
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 |
| Metlapa | 10 | 12 | 13 | 14 | 13 | 14 | 14 | 13 | 14 | 11 | 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 |