UV Index in Chajul, Guatemala

Last updated: July 2, 2025

Understanding the UV Index in Chajul, Guatemala is crucial for both sun safety and overall skin health. With the region's Cwb climate, you can expect diverse weather patterns, but the UV exposure can become significant, especially during peak hours. Knowledge of UV levels is essential for preventing sunburn and long-term skin damage, particularly when the index reaches a striking 15 around noon. Being aware of these levels helps residents and visitors make informed choices about sun protection and outdoor activities, ensuring a safe and enjoyable experience under the Guatemalan sun.

Hourly UV Index in Chajul

The UV Index reveals a dramatic rise in solar intensity throughout the morning, starting at a modest 1 at 07:00. As the day progresses, the index climbs steeply, peaking at an intense 15 by noon, exposing the midday sun's powerful rays. This peak is followed by a slight decline, with values dropping to 11 at 14:00, then tapering off to 7 by 15:00. As evening sets in, the index weakens, falling back to 1 by 17:00 and eventually reaching 0 by 19:00, signaling a conclusion to the sun's harmful effects. Be sure to protect yourself 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	4	moderate	30 min
09:00	7	high	25 min
10:00	11	extreme	10 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	14	extreme	10 min
14:00	11	extreme	10 min
15:00	7	high	25 min
16:00	4	moderate	30 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Chajul

Throughout the year, the UV Index in this region exhibits significant seasonal changes, with high-risk months predominantly from January to October. Notably, from March to June, the UV Index peaks at 15, categorized as extreme, signifying that unprotected skin can burn in as little as 10 minutes. February and March see the highest readings—reaching 13 and 15, respectively—while August and September maintain a high index at 14. As a result, it is crucial for visitors and residents to take adequate precautions during these months, such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours when UV exposure is most intense. In contrast, while December presents a slightly lower risk with a UV Index of 10, it is still advisable to remain vigilant.

Monthly Maximum UV Index for Chajul, Guatemala

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

The table above highlights how UV exposure in Chajul compares to other major locations across Guatemala. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

Chajul's solar exposure compared to other cities in Guatemala. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Petapa UVI	11	13	14	15	14	14	14	14	14	13	10	10
Villa Nueva UVI	11	13	14	15	14	14	14	14	14	13	10	10
Mixco UVI	11	13	15	15	14	14	14	14	14	13	11	10
Guatemala City UVI	11	13	15	15	14	14	14	14	14	13	11	10
San Juan Sacatepequez UVI	11	13	15	15	14	14	15	14	14	13	11	10
Chajul	11	13	15	15	15	15	15	14	14	13	11	10