UV Index in San Jose, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of San Jose, Mexico, where the sun's intensity can vary significantly throughout the day. With a climate that features ample sunshine, awareness of UV levels is essential for preventing sunburn and maintaining long-term skin health. On a typical day, the UV Index in San Jose can peak at a staggering 13 around midday, indicating extreme risk of harm from unprotected sun exposure. This makes it vital for everyone to equip themselves with the knowledge necessary to enjoy the outdoors safely while minimizing potential risks. Stay informed and protect your skin!

Hourly UV Index in San Jose

Experience the varying intensity of the UV Index throughout the day! Starting off mild at 1 between 07:00 and 08:00, the sun's rays gain strength as we approach midday, peaking at 12 at noon. The intensity continues to rise, reaching its highest point at 13 by 13:00. As the afternoon unfolds, the UV Index gradually declines, settling back down to 10 at 15:00 before tapering off to a gentle 1 by 19:00. Remember, during the peak hours from 10:00 to 14:00, protective measures are key to enjoying the sunny weather 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.
TimeUVICategoryTime to Burn
07:001low45 min
08:001low45 min
09:003moderate30 min
10:006high25 min
11:0010very high15 min
12:0012extreme10 min
13:0013extreme10 min
14:0012extreme10 min
15:0010very high15 min
16:007high25 min
17:004moderate30 min
18:002low45 min
19:001low45 min

Monthly UV Index Trends in San Jose

The UV Index experiences significant seasonal fluctuations, peaking predominantly during the summer months. From January to March, the UV Index escalates from 9 (very high) to a peak of 13 (extreme) in April, consistent through July before gradually tapering off in the fall. High-risk months are marked from February to October, with particularly extreme values observed from March to September. During these months, the recommended burn time is as short as 10 minutes. Visitors and residents are strongly advised to take precautions, such as using sunscreen, wearing protective clothing, and seeking shade during peak hours, especially in April through September when UV levels are highest. As a general rule, remain vigilant about UV exposure year-round, as even in November and December, the UV Index remains high at 9 and 8, necessitating protective measures.

Monthly Maximum UV Index for San Jose, Mexico

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Jose. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131313121198
Data source: Statistical UV Index data for San Jose, 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 Jose UV Index with Other Mexico Cities

The table above highlights how UV exposure in San Jose 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 Jose's solar exposure compared to other cities in Mexico. Generated using Copernicus Atmosphere Monitoring Service information.
 JanFebMarAprMayJunJulAugSepOctNovDec
San Jose911131313141313121198
Guadalajara UVI911141414131313131298
Iztapalapa UVI10121415141414141412108
Ecatepec de Morelos UVI10121415151414131412108
Mexico City UVI10121415151414131412108
Puebla UVI10121415151515141413109