UV Index in La Union, Mexico

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in La Union, Mexico, where the climate can expose you to intense sunlight. A high UV Index not only increases the risk of sunburn but also poses long-term threats to skin health. With peak UV levels reaching a staggering 13 around midday, it's essential to be aware of these values to protect yourself during outdoor activities. La Union's tropical climate means that UV exposure can be significant all year round, making knowledge of UV levels vital for anyone enjoying the sun-soaked beauty of this vibrant region.

Hourly UV Index in La Union

As the sun rises on this bright day, the UV Index starts off relatively low, peaking at just 1 at both 7:00 AM and 8:00 AM. However, by 9:00 AM, it jumps to 3, signaling an increase in UV exposure. The intensity escalates quickly, reaching a notable 6 by 10:00 AM. The real intensity hits its peak at 12:00 PM, when the UV Index soars to a striking 12, followed closely by a high of 13 at 1:00 PM. Over the next few hours, the index gradually diminishes, but still remains significant with 10 at 3:00 PM and 7 by 4:00 PM. As evening approaches, the levels continue to decline, returning to 1 once dusk settles in at 7:00 PM. Be sure to protect your skin!

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	12	extreme	10 min
13:00	13	extreme	10 min
14:00	12	extreme	10 min
15:00	10	very high	15 min
16:00	7	high	25 min
17:00	4	moderate	30 min
18:00	2	low	45 min
19:00	1	low	45 min

Monthly UV Index Trends in La Union

During the year, the UV Index experiences significant fluctuations, with the highest risk months spanning from February to October, particularly peaking in April and June at an index of 14. These months are categorized as having extreme exposure, meaning a burn can occur in as little as 10 minutes. As we transition into the later part of the year, the UV Index gradually decreases, dropping to 9 in November and 8 in December, both of which are classified as very high, allowing for a slightly longer burn time of 15 minutes. Visitors and residents should take precautions during the high-risk months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours to mitigate the risk of UV-related health issues.

Monthly Maximum UV Index for La Union, Mexico

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

The table above highlights how UV exposure in La Union 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.

La Union'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
La Union	9	11	13	14	13	14	13	13	13	12	9	8
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