UV Index in Buenos Aires, Costa Rica

Last updated: June 2, 2025

In Buenos Aires, Costa Rica, understanding the UV Index is vital for protecting your skin and overall health. With peak UV levels often soaring between 10:00 AM and 1:00 PM, reaching as high as 14, the risk of sunburn increases significantly during these hours. Awareness of UV levels can empower residents and visitors alike to take preventive measures against harmful effects, such as skin damage and long-term health issues. Given the region's tropical climate, residents face unique challenges from UV radiation, making it essential to stay informed and practice sun safety year-round.

Hourly UV Index in Buenos Aires

At dawn, the UV Index begins at a gentle 2 at 7:00 AM, gradually climbing to a peak of 14 by 11:00 AM and 12:00 PM. This midday intensity signals a crucial time for sun safety, as the index emphasizes the need for protection against harmful rays. As the afternoon progresses, the UV levels decrease, dropping to 5 by 3:00 PM and falling further to 1 by 5:00 PM. By 6:00 PM, the index gracefully settles at 0, marking the end of a sun-soaked day. Stay mindful of these UV changes to enjoy the sun safely!

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	5	moderate	30 min
09:00	9	very high	15 min
10:00	12	extreme	10 min
11:00	14	extreme	10 min
12:00	14	extreme	10 min
13:00	12	extreme	10 min
14:00	8	very high	15 min
15:00	5	moderate	30 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 Buenos Aires

Throughout the year, UV radiation levels remain at consistently high levels, categorized as extreme from January to November. The UV Index peaks in April at 16, indicating that March to May are particularly high-risk months, with an index fluctuating between 15 and 16. Although the index slightly drops in November and December, the exposure remains significant, peaking at 10 minutes for burn time across all months. Visitors and residents are advised to take precautionary measures, such as wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during the sun's peak hours to minimize the risk of skin damage.

Monthly Maximum UV Index for Buenos Aires, Costa Rica

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Buenos Aires. 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 Buenos Aires, 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 Buenos Aires UV Index with Other Costa Rica Cities

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

Buenos Aires's solar exposure compared to other cities in Costa Rica. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Limon UVI	12	13	14	15	14	13	13	13	13	14	11	10
Liberia UVI	11	13	14	14	14	14	14	13	13	13	11	10
Alajuela UVI	12	13	15	15	14	14	14	13	13	14	12	10
San Jose UVI	12	14	15	16	14	14	14	14	14	15	12	11
Buenos Aires	13	14	15	16	15	14	14	14	14	14	12	11
Paraiso UVI	13	14	16	16	15	15	15	14	14	15	12	11