Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in San Blas, Mexico, where the tropical climate brings abundant sunshine year-round. With peak UV levels often reaching a severe rating of 11 to 12 during midday, awareness of these numbers is vital for preventing sunburn and protecting skin health. The risk of UV exposure climbs significantly throughout the day, particularly between 10 AM and 3 PM, making it essential to stay informed and take appropriate precautions to enjoy the sunny weather safely. By keeping an eye on the UV Index, you can ensure your time in San Blas is both enjoyable and safe!
As the sun rises, the UV Index begins its ascent, starting from a gentle 1 at 07:00 and 08:00. By 09:00, it climbs to a moderate 3, but the real escalation hits by 10:00, reaching 6 as sunlight intensifies. The peak occurs at 12:00 with an impressive 11, and it edges even higher to 12 at 13:00, marking the day's highest UV exposure. This powerful sun begins to wane slightly, dropping to 11 at 14:00 and 9 by 15:00, before gently tapering off to a more manageable 7 at 16:00. As evening approaches, the index falls to 4 at 17:00, then continues to decline, settling back to 2 at 18:00 and returning to a safe 1 by 19:00. Stay protected and enjoy the sunny hours while being mindful of the UV intensity!
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 | 7 | high | 25 min |
17:00 | 4 | moderate | 30 min |
18:00 | 2 | low | 45 min |
19:00 | 1 | low | 45 min |
The UV Index varies significantly throughout the year, with high-risk months typically from February to September, where values reach their peak during April to August at an extreme level of 12. Visitors and residents should exercise caution during these months, especially due to the reduced burn time of just 10 minutes for peak exposure. Even in the earlier months like January, the UV Index of 6 poses a high risk, while October transitions to a lower but still significant 10, necessitating protective measures. To minimize the risk of sunburn and long-term skin damage, it is advisable to wear protective clothing, apply sunscreen regularly, and seek shade during peak sun hours, particularly between 10 AM and 4 PM.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
San Blas | 6 | 9 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 7 | 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 |