Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors of San Ignacio, Mexico, a region known for its abundant sunshine and warm climate. With UV levels reaching their peak between 12:00 PM and 2:00 PM, awareness of these levels can significantly aid in preventing sunburn and safeguarding skin health. Given the area's typical exposure risks, especially during the hotter months, being informed about the UV Index not only enhances your outdoor enjoyment but also protects against long-term skin damage. Stay vigilant, and keep your skin healthy while enjoying all that beautiful San Ignacio has to offer!
As the sun rises, the UV Index begins its ascent, starting from a gentle 1 at 07:00, making it a leisurely time for early risers. By 08:00, it nudges up to 2, signaling slightly more caution for outdoor activities. The real noticeable rise hits 09:00 with a 3, but it's between 10:00 and 14:00 that the UV Index peaks dramatically. At 12:00, the index reaches a striking 12, indicating high risk for skin damage without protection. This intensity persists through 13:00 and 14:00. As the afternoon progresses, a gradual decline commences, with the index dropping to 9 by 15:00, and eventually easing to 4 by 17:00. By evening, the UV Index settles back down to a manageable 1 by 19:00, allowing weary sun-seekers to unwind safely. Remember to stay protected during those peak hours!
| 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 | 12 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| San Ignacio | 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 |