UV Index in San Martin, Colombia

Last updated: August 1, 2025

Understanding the UV Index is crucial for residents and visitors of San Martin, Colombia, where the sun's rays can pose significant risks, especially during peak hours. With a tropical climate that often sees high UV levels, it's essential to be aware of the daily fluctuations to protect your skin from sunburn and long-term health issues. During sunny mornings, UV exposure can reach unsafe levels, peaking at 13 around noon, making it vital to take precautions. By monitoring the UV Index, you can enjoy the beautiful outdoors while safeguarding your skin health and ensuring a safe experience in this vibrant region.

Hourly UV Index in San Martin

As the sun rises over the horizon, the UV Index starts at a gentle 1 at 07:00, gradually increasing as the day unfolds. By 09:00, it reaches a moderate 6, prompting sun seekers to take note. The intensity peaks at 12:00 with a striking 13, marking the sun’s zenith, before slowly declining throughout the afternoon. At 13:00, it sits at 11, and by 15:00, it drops to 5, signaling a more manageable exposure for those outdoors. The sun begins to retreat, and by 17:00, the index falls back to 1, finally settling at 0 by 19:00, as evening approaches. This hourly dance of the UV Index not only highlights the day's sunlit energy but also serves as a reminder for sun safety throughout the day.

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	12	extreme	10 min
12:00	13	extreme	10 min
13:00	12	extreme	10 min
14:00	9	very high	15 min
15:00	5	moderate	30 min
16:00	2	low	45 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 Martin

The UV Index exhibits extreme levels from January through May, peaking at 15 in April and remaining consistently high until October. During these months, a burn time of just 10 minutes is sufficient for unprotected skin, highlighting the high-risk months for sun exposure primarily from March to April. Visitors and residents are strongly advised to take precautions, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sun hours. As the year progresses, although the UV Index slightly decreases, it remains a consideration; even in December, the index is rated as very high with a notable burn time of 15 minutes. Prioritizing sun safety year-round is essential.

Monthly Maximum UV Index for San Martin, Colombia

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

The table above highlights how UV exposure in San Martin 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 Martin'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
San Martin	12	13	14	15	14	13	13	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
Bogota UVI	15	16	18	18	17	15	15	16	15	15	14	13