UV Index in San Ignacio, Mexico

Last updated: June 2, 2025

In San Ignacio, Mexico, awareness of the UV Index is crucial for both locals and visitors alike, as it plays a vital role in safeguarding skin health and preventing sunburn. Understanding UV levels throughout the day can help you take proactive measures to protect your skin from the sun’s harmful rays. With its semi-arid climate (BSk), San Ignacio experiences high UV exposure, particularly during the peak hours from 10 AM to 2 PM, where the UV Index can soar as high as 12. Being informed about these UV levels empowers you to embrace the sun safely and enjoy all that this beautiful destination has to offer!

Hourly UV Index in San Ignacio

As the sun rises, the UV Index starts low at 1 at 07:00, but by 09:00, it climbs to a moderate 6. The peak intensity occurs around 12:00, reaching an impressive 12, indicating that midday sun can be intense. For the next hour, it holds steady at 12, before gradually tapering off to 10 by 14:00. The index continues to decline, dropping to 7 at 15:00, then settling to a more manageable 5 by 16:00. As the day draws to a close, the UV levels drop further to 2 at 17:00, and finally return to 1 by 19:00. Throughout the day, it's essential to stay protected from the sun's rays, especially during those peak 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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	12	extreme	10 min
14:00	10	very high	15 min
15:00	7	high	25 min
16:00	5	moderate	30 min
17:00	2	low	45 min
18:00	1	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in San Ignacio

Throughout the year, UV Index levels show significant seasonal changes, with peak exposure occurring from April to September when the index remains at an extreme level of 12. During these high-risk months, especially from March to September, the burn time is drastically reduced to just 10 minutes, emphasizing the need for diligent sun protection measures. Conversely, the UV Index subsides in the late fall and winter months, reaching a moderate level of 5 in January and December, which allows for safer sun exposure, with burn times extending to 30 minutes. Residents and visitors are strongly advised to take precautions during the high-risk months, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours, especially from April to September, to minimize the risk of skin damage.

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	5	7	10	12	12	12	12	12	11	9	6	5
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