UV Index in Buenos Aires, Peru

Last updated: June 2, 2025

Understanding the UV Index in Buenos Aires, Peru is essential for protecting your skin and maintaining overall health. With UV levels peaking as high as 10 around midday, awareness of these indicators can help you prevent sunburn and reduce the risk of long-term skin damage. Buenos Aires enjoys a BWh climate, which brings plenty of sunshine but also significant exposure risks, particularly during the warmer months. By keeping an eye on the UV Index, you can make informed choices about sun protection, ensuring you savor the sunny days safely.

Hourly UV Index in Buenos Aires

As the sun rises, the UV Index begins its gradual ascent, starting at a mild 1 at 7:00 AM. By 9:00 AM, it escalates to 4, indicating a moderate level of UV exposure. The sun reaches its peak intensity around 12:00 PM, where the index hits a striking 10, signaling a high risk for harm from unprotected sun exposure. Fortunately, this intensity diminishes in the afternoon; by 3:00 PM, it drops to 5, and by 6:00 PM, it plummets to 0. As the day winds down, it's clear that midday is when the sun's rays are most perilous, urging sun safety precautions 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	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	9	very high	15 min
12:00	10	very high	15 min
13:00	9	very high	15 min
14:00	7	high	25 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

The UV Index shows significant variations throughout the year, with extreme levels predominantly occurring from January to April, and again in August and September. The highest values are recorded in March (15) and consistently at 14 in January, February, April, and May. Visitors and residents should exercise caution, particularly from January to April and during August and September, when the burn time is as brief as 10 minutes. It is advisable to seek shade, wear protective clothing, and apply sunscreen to minimize the risk of harm from UV radiation during these high-risk months. From June to July, the UV Index drops slightly to 10, categorized as very high, allowing for a slightly longer burn time of 15 minutes, yet caution remains essential.

Monthly Maximum UV Index for Buenos Aires, Peru

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 Peru Cities

The table above highlights how UV exposure in Buenos Aires compares to other major locations across Peru. 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 Peru. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Callao UVI	14	14	14	12	10	9	10	11	12	13	14	13
Lima UVI	14	14	14	12	10	9	10	11	12	13	14	13
Buenos Aires	14	14	15	14	12	10	10	11	13	13	13	13
Trujillo UVI	15	15	15	14	12	11	11	11	13	14	14	14
Chiclayo UVI	14	15	15	14	13	11	11	12	15	14	14	13
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17