Last updated: July 2, 2025
In San Luis Morelia, Mexico, understanding the UV Index is crucial for your health and well-being. High UV levels can lead to painful sunburns and long-term skin damage, making awareness essential for anyone enjoying the sun. With the region's Aw climate, featuring warm temperatures and abundant sunshine, the UV Index can spike dramatically throughout the day—reaching as high as 15 from 14:00 to 15:00. By staying informed about UV exposure, you can take proactive steps to protect your skin and enjoy the beautiful weather safely.
As the sun climbs higher in the sky, the UV Index reflects its strength, peaking dramatically around midday. Starting the day with a mild UV Index of 1 at 07:00, the intensity begins to increase steadily. By 10:00, it escalates to 5, but the real surge occurs between 11:00 and 14:00, where the index skyrockets to an impressive 15 at 14:00. This is a crucial reminder for outdoor enthusiasts to protect themselves during these hours, as the UV levels are at their highest. After reaching its zenith, the index gradually descends, dipping to 9 by 16:00 and falling to a safer 3 by 18:00, leaving the evenings more benign with a last index of 1 at 19:00. Stay safe and enjoy the sunshine wisely!
| 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 | 15 | extreme | 10 min |
| 15:00 | 13 | 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 |
The UV Index experiences significant seasonal fluctuations, with high-risk months primarily occurring from February through October. During this period, the UV Index reaches extreme levels, peaking at 15 in April, May, July, and fluctuating between 12 and 14 in other summer months. Burn times are notably short, with exposure times as little as 10 minutes required for potential sunburn. Residents and visitors are strongly advised to take precautions during these months; this includes wearing protective clothing, applying broad-spectrum sunscreen, seeking shade, and avoiding peak sun hours whenever possible. As we transition into November and December, the UV Index decreases to 10 and 9, respectively, allowing for a moderate level of exposure, although caution is still recommended.
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 |
| 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 |
| San Luis Morelia | 10 | 12 | 14 | 15 | 15 | 14 | 15 | 14 | 14 | 12 | 10 | 9 |
| Puebla UVI | 10 | 12 | 14 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 10 | 9 |