UV Index in San Luis, Colombia

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in San Luis, Colombia, where the intensity of ultraviolet radiation can significantly impact skin health. With peak UV levels soaring to 15 around midday, awareness of these readings is essential for sunburn prevention and maintaining long-term skin health. The tropical climate of San Luis often brings with it high exposure risks, particularly during peak hours between 10 AM and 2 PM. By staying informed about the local UV Index, you can take proactive steps to protect yourself from harmful sun exposure and enjoy the beautiful Colombian sunshine safely.

Hourly UV Index in San Luis

As the day unfolds, the UV Index shows a dynamic shift in sun intensity, peaking dramatically around noon. Starting from a mild 1 at 7:00 AM, it gradually rises, hitting 3 by 8:00 AM. By 9:00 AM, the index jumps to 7, signaling increased exposure risk. The sun reaches its zenith at 12:00 PM, with a staggering 15, followed closely by 14 at 1:00 PM. As the afternoon progresses, the levels begin to taper off, dropping to 10 by 2:00 PM and further declining to 6 at 3:00 PM. By 5:00 PM, the UV Index returns to a safer 1, and the day concludes with the sun setting at 7:00 PM, where it rests at a safe 0. Stay protected, 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	7	high	25 min
10:00	10	very high	15 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	14	extreme	10 min
14:00	10	very high	15 min
15:00	6	high	25 min
16:00	3	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 San Luis

Throughout the year, UV Index levels remain alarmingly high, consistently categorized as extreme, with burn times of just 10 minutes across all months. The highest UV Index occurs in March, reaching 17, followed closely by April at 17 and February at 15. Thus, March and April are particularly high-risk months for sun exposure. It's crucial for visitors and residents to take preventive measures during these months, such as wearing sunscreen, protective clothing, and seeking shade, especially between 10 AM and 4 PM when the sun’s rays are strongest. Consistent vigilance is essential year-round to protect against harmful UV radiation.

Monthly Maximum UV Index for San Luis, Colombia

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

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

San Luis's solar exposure compared to other cities in Colombia. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Barranquilla UVI	11	12	14	14	13	12	13	13	13	13	11	10
Cartagena UVI	11	11	13	15	13	13	12	13	13	13	11	10
Medellin UVI	14	15	17	16	16	14	14	15	14	14	13	12
Cali UVI	15	16	17	17	15	14	14	14	15	14	13	12
San Luis	14	15	17	17	16	14	15	15	14	15	14	12
Bogota UVI	15	16	18	18	17	15	15	16	15	15	14	13