UV Index in Santiago Altitlan, Mexico

Last updated: July 2, 2025

In Santiago Atitlán, Mexico, understanding the UV Index is crucial for protecting your skin and overall health. With high UV levels peaking at 15 during midday, awareness of these numbers can help prevent painful sunburns and long-term skin damage. Nestled in a picturesque climate with ample sunshine, Santiago Atitlán presents unique UV exposure risks that demand attention. By tracking the UV Index, locals and visitors alike can enjoy the beauty of this vibrant region while prioritizing their skin health and well-being. Stay informed and safe under the sun!

Hourly UV Index in Santiago Altitlan

The UV Index throughout the day presents a fascinating journey of sunlight intensity, peaking dramatically between 12 PM and 2 PM. Starting the morning with a gentle UV Index of 1 at 7 AM, the sun gradually warms up, reaching 3 by 9 AM. However, it's the midday sun that truly asserts itself, soaring to a striking 15 at 1 PM, when sun safety is paramount. As the afternoon progresses, the index begins to decline, dropping to 9 by 4 PM and fading to a tranquil 1 by 7 PM. With such a pronounced peak, it's essential to remain vigilant during those hours of highest exposure—remember to wear sunscreen, seek shade, and stay hydrated!

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	3	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	13	extreme	10 min
13:00	15	extreme	10 min
14:00	15	extreme	10 min
15:00	12	extreme	10 min
16:00	9	very high	15 min
17:00	5	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in Santiago Altitlan

Throughout the year, seasonal UV changes reveal significant variation, particularly between January and October, where the UV Index frequently reaches extreme levels. The high-risk months are clearly identified as February to September, with the UV Index peaking at 15 in May and July, which corresponds to a burn time of just 10 minutes. Visitors and residents are strongly advised to take precautionary measures during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade when possible. Outside of these high-risk months, the UV Index remains very high in January, November, and December, suggesting that caution should still be exercised year-round to minimize the risk of skin damage from UV exposure.

Monthly Maximum UV Index for Santiago Altitlan, Mexico

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

The table above highlights how UV exposure in Santiago Altitlan 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.

Santiago Altitlan'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
Santiago Altitlan	10	12	14	14	15	14	15	13	14	12	10	9
Puebla UVI	10	12	14	15	15	15	15	14	14	13	10	9