UV Index in California, Colombia

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of California, Colombia, especially given the region's diverse climate and high exposure to solar radiation. With UV levels peaking at an alarming 15 around noon, awareness is key to preventing sunburn and protecting long-term skin health. As the sun's intensity varies throughout the day, knowing when to seek shade or apply sunscreen can significantly reduce your risk of skin damage. In California's Cfb climate, where temperatures can rise and UV indices soar, being informed about UV exposure is not just smart—it's essential for enjoying all the outdoor beauty this vibrant region has to offer.

Hourly UV Index in California

The UV Index starts off mild at 07:00 with a reading of 2, but as the sun rises, it reaches a peak of 15 by 12:00, emphasizing the importance of sun protection during peak hours. Right at 11:00, it hits a critical level of 14, making midday the most intense for UV exposure. As the afternoon progresses, the index gradually declines, dropping to 6 by 15:00, and continues its descent to 1 by 17:00. By 18:00 and 19:00, the UV Index falls to 0, signaling a safe time for outdoor activities without sun protection. Be sure to enjoy the sunshine while staying safe during those highest 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	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	12	extreme	10 min
11:00	14	extreme	10 min
12:00	15	extreme	10 min
13:00	13	extreme	10 min
14:00	9	very high	15 min
15:00	6	high	25 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in California

The UV Index exhibits extreme levels throughout the year, with notable peaks occurring from March to April, where it reaches 15 to 16 and maintains a high level into early May. Visitors and residents should be particularly vigilant during February and March, when the index rises to 14 and 15, making these some of the highest-risk months for sun exposure, with a dangerously short burn time of just 10 minutes year-round. As such, it is crucial to adopt proactive sun protection measures, including using sunscreen, wearing protective clothing, and seeking shade, especially in midday hours. Even during the months of October and November, when the index decreases to 13 and 12, respectively, the risk remains significant, urging continued caution to prevent sun damage.

Monthly Maximum UV Index for California, Colombia

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

The table above highlights how UV exposure in California 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.

California'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
California	12	14	15	16	15	14	13	13	14	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