UV Index in San Diego, Mexico

Last updated: May 3, 2025

Understanding the UV Index in San Diego, Mexico is crucial for all sun seekers and outdoor enthusiasts. With typical UV levels soaring, especially around midday, being aware of these readings can help prevent sunburn and promote long-term skin health. San Diego's warm climate offers plenty of sunshine, but it also presents significant risks during peak hours, with UV Index values reaching an intense 14 in the afternoon. By monitoring the UV Index, you can make informed decisions to protect yourself and enjoy the beautiful outdoor activities this vibrant region has to offer.

Hourly UV Index in San Diego

Today’s UV Index reveals a dramatic rise and fall in sun intensity as the day progresses. Starting off gently at 1 at 07:00, the index climbs steadily, peaking at an intense 14 by 13:00. This sun-soaked afternoon signals a high risk for sun exposure, prompting the need for protective measures. As the clock rolls toward evening, the UV Index begins to descend, dropping to 1 by 19:00, making the late hours much safer for those venturing outdoors. With this information, it's vital to plan outdoor activities accordingly, maximizing enjoyment while staying protected during those peak UV hours!

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	4	moderate	30 min
10:00	7	high	25 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	14	extreme	10 min
14:00	13	extreme	10 min
15:00	10	very high	15 min
16:00	7	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 Diego

The UV Index exhibits significant seasonal changes, with high-risk months from February to October, where values reach extreme levels (UV Index 13-15) for most of the period, resulting in a quick burn time of just 10 minutes. January and November present a slightly lower risk with very high exposure (UV Index 10) and a burn time of 15 minutes, while December sees a marginally decreased risk (UV Index 9). Visitors and residents are strongly advised to take protective measures during these high-risk months, such as wearing sunscreen with a high SPF, donning protective clothing, and seeking shade, particularly during midday hours when UV radiation is at its peak. Being proactive can greatly mitigate the risks associated with UV exposure throughout the year.

Monthly Maximum UV Index for San Diego, Mexico

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

The table above highlights how UV exposure in San Diego 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 Diego'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
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
San Diego	10	13	14	15	14	14	15	14	14	13	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9