Last updated: May 3, 2025
In Marin, Mexico, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. Given the region's Am climate, residents and visitors alike should be vigilant about UV levels, especially during peak hours when the index can reach a maximum of 13—indicating an increased risk of harm from unprotected sun exposure. Understanding these levels not only aids in effective sun protection strategies but also helps promote long-term skin wellness. With typically sunny conditions, it's essential to take proactive measures to enjoy the outdoors safely and responsibly.
The UV Index displays a dynamic pattern throughout the day, starting with a gentle level 1 at 7:00 AM and 8:00 AM, perfect for early risers. As the sun climbs higher, the intensity increases sharply, peaking at a striking 12 around noon and reaching its zenith at 1 PM with an impressive 13. From that point, the index gradually declines, dropping to 6 by 4 PM, and then further down to a softer 3 by 5 PM. By evening, it returns to 1 at 6 PM, inviting a sense of relief as the day winds down. This data emphasizes the importance of sun safety, especially during those peak hours when the UV Index is at its highest.
| 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 | 10 | very high | 15 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 13 | 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 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences significant fluctuations throughout the year, with January and February marking the start of very high UV levels at 9 and 10 respectively, where the burn time is just 15 minutes. As spring approaches, particularly in March and April, the UV Index escalates to extreme levels, peaking at 13, with critical burn times reducing to 10 minutes. This intensity continues through the summer months of May, June, July, and August. Notably, July is particularly hazardous, maintaining a high UV Index of 13. As autumn arrives, from September to October, the UV levels remain extreme, although slightly less intense at 11. As winter settles in, November and December witness a return to very high categories, dropping to 9 and 8 respectively. Given these conditions, it is imperative for visitors and residents to take precautions during the high-risk months from March through October, emphasizing the importance of sunscreen, protective clothing, and limited sun exposure during peak hours to minimize the risks of sunburn and long-term skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Marin | 9 | 10 | 12 | 13 | 12 | 13 | 13 | 12 | 12 | 11 | 9 | 8 |
| 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 |