UV Index in Buenos Aires, Costa Rica

Last updated: May 3, 2025

In Buenos Aires, Costa Rica, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you prevent sunburn and reduce the risk of long-term skin damage, especially during peak exposure hours when the index reaches a maximum of 15 around midday. With its tropical climate, Buenos Aires experiences high UV exposure, particularly from late morning to early afternoon, making it essential for residents and visitors alike to take proactive sun safety measures. Be sun smart—know the UV Index and enjoy the beautiful outdoors while keeping your skin safe!

Hourly UV Index in Buenos Aires

The UV Index paints a vivid picture of the day's sun exposure. By 07:00, it starts at a low 2, gradually climbing as the sun rises. By 09:00, the index hits 9, signaling increasing intensity. The peak arrives at 11:00 and 12:00 with a blistering 15, urging caution for those outdoors. As the afternoon unfolds, the index begins to decline: 12 at 13:00, dropping to 8 by 14:00. By late afternoon, the intensity diminishes significantly, hitting 2 at 16:00 and tapering off to 1 by 17:00. The sun sets with the UV Index falling to 0 by 18:00, wrapping up a day of notable solar activity. Be sure to protect your skin during those 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	2	low	45 min
08:00	5	moderate	30 min
09:00	9	very high	15 min
10:00	13	extreme	10 min
11:00	15	extreme	10 min
12:00	15	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