UV Index in Cuilco, Guatemala

Last updated: August 1, 2025

In Cuilco, Guatemala, staying informed about the UV Index is crucial for safeguarding your skin and overall health. High UV levels can lead to serious issues like sunburn and long-term skin damage, making it essential to understand the daily fluctuations in ultraviolet radiation. Cuilco's Aw climate typically brings strong sun exposure, with UV Index readings peaking at 15 during midday hours. By being aware of these levels, residents can take proactive steps to protect themselves and enjoy the sun safely.

Hourly UV Index in Cuilco

The UV Index throughout the day showcases a dramatic rise and fall, peaking at an intense 15 at 12:00 PM. Starting from a mild 1 at 07:00 AM, the index steadily climbs, reaching 3 by 08:00 AM and soaring to 11 by 10:00 AM. It continues to escalate, hitting 14 at 11:00 AM, before its zenith at 12:00 PM. In the afternoon, the index gradually declines, dropping to 11 at 2:00 PM, then to 7 at 3:00 PM, and further down to 2 by 5:00 PM. Finally, the day concludes with a return to a safe 0 just before nightfall. This pattern underscores the necessity of sun protection during peak hours, particularly from 10 AM to 2 PM, when the UV exposure is most hazardous.

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	10	very high	15 min
11:00	13	extreme	10 min
12:00	14	extreme	10 min
13:00	13	extreme	10 min
14:00	10	very high	15 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 Cuilco

The UV Index exhibits significant seasonal variations, with peak values occurring from February through July, where it consistently reaches an extreme level of 13-15. This indicates that the months of March, April, July, and May are particularly high-risk for UV exposure, with a burn time of just 10 minutes. As residents and visitors plan outdoor activities, it is crucial to exercise extra caution during these months by using sunscreen, wearing protective clothing, and seeking shade whenever possible. Even in the fall and winter months, UV levels remain very high, so maintaining sun safety practices year-round is advisable.

Monthly Maximum UV Index for Cuilco, Guatemala

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

The table above highlights how UV exposure in Cuilco 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.

Cuilco'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
Cuilco	11	13	15	15	14	14	15	14	14	13	11	10
San Juan Sacatepequez UVI	11	13	15	15	14	14	15	14	14	13	11	10