UV Index in Santo Tomas, Colombia

Last updated: August 1, 2025

In Santo Tomas, Colombia, understanding the UV Index is crucial for safeguarding your skin and overall health. The risk of sunburn and long-term skin damage increases significantly during the day, especially when UV levels peak. With a tropical climate that boasts plenty of sunshine, residents and visitors alike should be aware of the solar intensity that can rapidly rise to dangerous levels—reaching a high of 12 between noon and 1 PM. By monitoring the UV Index in this vibrant area, you can take proactive steps to protect yourself from harmful rays and enjoy the outdoors safely.

Hourly UV Index in Santo Tomas

Starting the day with a low UV Index of 1 at 7:00 AM, the sun begins to assert its presence as the hours roll on. By 9:00 AM, it climbs to 6, marking the onset of a noticeable increase. The peak is reached at 11:00 AM and 12:00 PM, with the UV Index soaring to 12, warning sun seekers to stay protected. As the afternoon progresses, the intensity gradually declines, dipping to 9 at 2:00 PM, before further dropping to 6 at 3:00 PM. By late afternoon, from 4:00 PM onwards, it's back to safer levels, resting at 3 until 5:00 PM, then falling to 1 as the sun begins to set. By 7:00 PM, the UV threat dissipates altogether, registering 0. This pattern underscores the importance of sun safety, especially during 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	6	high	25 min
10:00	9	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	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 Santo Tomas

Throughout the year, the UV Index remains notably high, with extreme levels observed from January to November. The highest readings occur in March and April, reaching a UV Index of 14, which means the burn time is as little as 10 minutes under direct sunlight. While December sees a slight decrease to a UV Index of 10, the exposure level remains very high. Visitors and residents are strongly advised to take necessary precautions during these high-risk months, particularly from January to September, by wearing sunscreen, protective clothing, and seeking shade to minimize exposure. Even during October and November, it is essential to maintain vigilance as the UV Index stays at 13 and 11, respectively. Stay safe and protect your skin!

Monthly Maximum UV Index for Santo Tomas, Colombia

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

The table above highlights how UV exposure in Santo Tomas 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.

Santo Tomas'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
Santo Tomas	11	11	14	14	13	13	12	13	13	13	11	10
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
Bogota UVI	15	16	18	18	17	15	15	16	15	15	14	13