UV Index in San Isidro, Mexico

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in San Isidro, Mexico, where the sun shines bright year-round. With peak UV levels often exceeding 10 from late morning to early afternoon, awareness of these exposure risks is essential for preventing sunburn and promoting long-term skin health. The region's BWh climate brings ample sunshine, making it important to monitor UV intensity to protect yourself and enjoy the outdoors safely. Whether you're hitting the beach or exploring local attractions, knowing the UV Index can help you make informed choices, ensuring that your time in the sun remains enjoyable and safe.

Hourly UV Index in San Isidro

As the sun rises, the UV Index begins at a safe 0 at 07:00, gradually climbing to 1 by 08:00. The intensity peaks dramatically at 13 between 13:00 and 14:00, with a maximum of 11 at noon. This is the time to take extra precautions! From 15:00 onwards, the index begins to decline, dropping to 6 by 17:00, and cooling off to 3 by 18:00, before settling back to 1 by evening. It’s essential to stay protected during peak hours to enjoy the day safely!

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	0	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	7	high	25 min
12:00	11	extreme	10 min
13:00	13	extreme	10 min
14:00	13	extreme	10 min
15:00	12	extreme	10 min
16:00	10	very high	15 min
17:00	6	high	25 min
18:00	3	moderate	30 min
19:00	1	low	45 min

Monthly UV Index Trends in San Isidro

The UV Index experiences significant seasonal fluctuations, with the highest levels occurring from March to October, where it reaches extreme categories (12-14), resulting in a burn time as short as 10 minutes during peak months. February marks the transition to very high levels, peaking at 10, while January and December see lower, yet still concerning levels of 7, categorized as high. For visitors and residents, the high-risk months are clearly from March through October, where it is crucial to take protective measures against UV exposure, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours. As the UV Index declines in November and December, vigilance should remain, particularly in February when transitioning into the peak season. Always be mindful of the UV index when planning outdoor activities!

Monthly Maximum UV Index for San Isidro, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Isidro. 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 Isidro, 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 Isidro UV Index with Other Mexico Cities

The table above highlights how UV exposure in San Isidro 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 Isidro'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 Isidro	7	10	12	14	14	13	13	13	13	11	8	7
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