UV Index in San Francisco Grande, Mexico

Last updated: July 2, 2025

Awareness of the UV Index is crucial for residents of San Francisco Grande, Mexico, where sunny days are common and UV radiation can reach dangerous levels. Understanding UV levels is key to preventing sunburn and protecting skin health, as even mild exposure can lead to long-term damage. With a climate characterized by high temperatures and plenty of sunshine, the UV Index in San Francisco Grande can peak at 12 during midday hours, highlighting the importance of vigilance and sun safety to enjoy the outdoors without compromising your skin’s well-being.

Hourly UV Index in San Francisco Grande

The UV Index undergoes a notable progression throughout the day, beginning at a gentle 1 at 07:00, before gradually rising to a moderate 2 by 08:00. As the sun ascends, the index climbs sharply, peaking at a dizzying 13 around 13:00—a clear indication that sun protection is essential during these hours. From this pinnacle, the UV Index begins its descent, tapering off to a 9 at 15:00 and finally dwindling to 1 by the evening hours of 18:00 and 19:00. With this data in mind, it's crucial to enjoy the outdoors safely, particularly between 11:00 and 14:00, when the sun's rays are at their most intense.

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	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	13	extreme	10 min
14:00	11	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

Monthly UV Index Trends in San Francisco Grande

The UV Index in the region experiences significant seasonal variations, with the highest values occurring from March to October, where it reaches extreme levels (Index 13-14), indicating a burn time of only 10 minutes. January and February also show very high UV levels (Index 8-10) with a quick burn time of 15 minutes, while November and December see a decline to 8 and 7 respectively, with a burn time of 15 and 25 minutes. The months March through October are the highest risk periods for UV exposure, especially in June with the peak UV Index of 14. It is advisable for both visitors and residents to take precautions during these high-risk months by seeking shade, using sunscreen, wearing protective clothing, and minimizing sun exposure, particularly during peak hours.

Monthly Maximum UV Index for San Francisco Grande, Mexico

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

The table above highlights how UV exposure in San Francisco Grande 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 Francisco Grande'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 Francisco Grande	8	10	13	13	13	14	13	12	12	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