UV Index in San Jose, Colombia

Last updated: August 1, 2025

Understanding the UV Index in San Jose, Colombia is crucial for protecting your skin and overall health. The UV Index serves as a vital indicator of the sun's intensity at different times of the day, allowing residents and visitors to take proactive measures against sunburn and long-term skin damage. In San Jose's tropical climate, where UV levels can peak at a staggering 13 around noon, awareness of these fluctuations becomes essential for safe outdoor activities. By staying informed about the UV Index, you can enjoy the sun responsibly while safeguarding your skin against harmful rays.

Hourly UV Index in San Jose

As the sun rises, the UV Index begins its gradual ascent, hitting a mild 1 by 7:00 AM. The intensity grows steadily, reaching 2 by 8:00 AM and then surging to 5 at 9:00 AM. By 10:00 AM, the index peaks at a robust 8, warning of increasing exposure risk. 11:00 AM sees the UV rays intensify to an impressive 11, leading to a maximum of 13 at 12:00 PM, making it critical to stay protected. The afternoon sun starts to mellow out, dropping to 12 by 1:00 PM, then gradually tapering off to 10 at 2:00 PM, 6 at 3:00 PM, and further declining to 3 at 4:00 PM. Finally, as evening descends, the index falls to 1 by 5:00 PM and remains at that level through 6:00 PM, until fading to 0 after sunset at 7:00 PM. Stay vigilant and shield yourself during those peak midday 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	2	low	45 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	13	extreme	10 min
13:00	12	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 Jose

Throughout the year, the UV Index in this region remains consistently high, reaching extreme levels from January to May, with a peak of 15 in March and April. The high-risk months for UV exposure are January through May, when the burn time is critically short at just 10 minutes for all months listed. Although the UV Index slightly decreases during the summer and fall months, it remains dangerously high, with values around 12 to 13 from June to November. Residents and visitors are strongly advised to take precautionary measures year-round, such as wearing protective clothing, using sunscreen with adequate SPF, and avoiding prolonged sun exposure during peak hours to mitigate the risk of skin damage.

Monthly Maximum UV Index for San Jose, Colombia

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

The table above highlights how UV exposure in San Jose 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 Jose'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 Jose	14	14	15	15	14	12	13	13	13	13	12	11
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