UV Index in San Ignacio, Mexico

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors in San Ignacio, Mexico, where sun exposure can quickly lead to skin damage. With scorching afternoons where UV levels can peak as high as 12, it's essential to be aware of the daily UV readings to effectively prevent sunburn and promote long-term skin health. San Ignacio's warm climate contributes to significant UV exposure risks, especially during midday when the sun is at its zenith. By keeping an eye on the UV Index, you can enjoy the vibrant outdoors without compromising your well-being and ensure safe sun practices year-round.

Hourly UV Index in San Ignacio

The UV Index for the day begins its ascent at 08:00, starting at a low of 1, and steadily rises as the sun climbs higher in the sky. By 10:00, it reaches a moderate 4, but the real intensity hits at 12:00, peaking at a striking 10. From 13:00 to 14:00, the index holds strong at 12, indicating a high risk of harm from unprotected sun exposure. As the afternoon progresses, the index gradually declines, dropping back to 9 by 16:00 and further falling to 3 by 18:00. The evening brings a sense of relief as the UV levels retreat, ending the day with a gentle 1 at 19:00. This data emphasizes the need for sun safety during the peak hours of fully radiant sunshine!

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	10	very high	15 min
13:00	12	extreme	10 min
14:00	12	extreme	10 min
15:00	11	extreme	10 min
16:00	9	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 Ignacio

The UV Index exhibits significant seasonal variation, with high-risk months primarily occurring from March through October, where the index reaches extreme levels of 12 to 13 and a burn time of just 10 minutes. Specifically, April and August record the highest UV Index of 13. Visitors and residents should take precautionary measures during these months—such as wearing sunscreen, protective clothing, and sunglasses, and seeking shade—particularly during peak sunlight hours. While January and February still present a very high risk with UV Index values of 8 and 10, the risk gradually decreases towards the end of the year, with November and December reflecting a high to moderate risk. It’s essential to stay informed and protect your skin throughout the year.

Monthly Maximum UV Index for San Ignacio, Mexico

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

The table above highlights how UV exposure in San Ignacio 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 Ignacio'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 Ignacio	8	10	12	13	12	13	12	13	12	11	9	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