UV Index in San Blas, Mexico

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!

Hourly UV Index in San Blas

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!

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
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

Monthly UV Index Trends in San Blas

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.

Monthly Maximum UV Index for San Blas, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Blas. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.

Data source: Statistical UV Index data for San Blas, based on information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

Compare San Blas UV Index with Other Mexico Cities

The table above highlights how UV exposure in San Blas compares to other major locations across Mexico. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Blas's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
	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