Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Chametla, Mexico, where the combination of tropical climate and high sun exposure can pose significant risks to skin health. With UV levels peaking at 12 around midday, awareness of these levels is essential for preventing sunburn and long-term skin damage. By being informed about the daily UV Index, you can take protective measures to enjoy the sunshine safely while minimizing the risks associated with intense ultraviolet radiation. Stay vigilant, as Chametla's sunny disposition means that a little sunshine goes a long way toward serious skin protection!
The UV Index dances through the day, peaking dramatically as the sun reaches its zenith. Starting the morning at a mild level of 1 at 07:00, the index slowly escalates to 2 by 08:00. As the clock strikes 09:00, it nudges up to 3, but the real surge begins at 10:00 with a jump to 6. The sun's fierce glow becomes undeniable by 11:00, reaching 9, and then it hits its apex at 12:00, soaring to 11—a clear signal to seek shade! By 13:00, it peaks at a sizzling 12 before gradually declining. The late afternoon sees a gentle slide down to 9 at 15:00, and the index softens to 6 by 16:00. As the day wanes, the UV levels drop, returning to a safe 1 by 19:00, offering a calm end to a sun-soaked day.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV levels fluctuate, peaking during the spring and summer months. January starts with a high UV Index of 7, but by February, it rises significantly to 10, indicating very high risk with a burn time reduced to 15 minutes. The months of March through October consistently exhibit extreme UV conditions, with March and April reaching a peak Index of 13 and a burn time of just 10 minutes. July to September maintain a UV Index of 12, also allowing only 10 minutes for safe sun exposure. As the year progresses, November sees a drop to 8, while December ends with a high UV Index of 6. Visitors and residents are advised to exercise caution, especially from February through October, utilizing protective clothing, sunscreen, and limiting sun exposure during peak hours to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chametla | 7 | 10 | 11 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 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 |