UV Index in Buenos Aires, Peru

Last updated: June 2, 2025

Understanding the UV Index is crucial for anyone living in or visiting Buenos Aires, Peru, where the sun's rays can be surprisingly intense. With peak UV levels reaching a high of 12 around noon, it's essential to be aware of the potential for sunburn and long-term skin health issues. Buenos Aires experiences a BWh climate, characterized by sunny days and clear skies, making it imperative to know when to seek shade or apply sunscreen. By staying informed about the UV Index, you can protect yourself and enjoy all that this vibrant city has to offer while minimizing sun-related risks.

Hourly UV Index in Buenos Aires

The UV Index rises steadily throughout the morning, starting at a safe 1 at 7:00 AM and gradually climbing to a peak of 12 by noon. This significant increase signifies a risk of harm from unprotected sun exposure, especially between 11:00 AM and 1:00 PM when the intensity reaches its zenith. As the afternoon progresses, the index begins to decline, dropping to 5 by 3:00 PM and further decreasing to 1 by 6:00 PM. By 7:00 PM, the sun's rays become gentle, with a UV Index of 0, making it a safe time to enjoy outdoor activities. Remember to protect yourself during peak hours 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	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	5	moderate	30 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 Buenos Aires

The UV Index in this region remains extremely high throughout the year, with values peaking at 17 in March and consistently hovering between 12 to 15 during other months. Notably, the high-risk months for sun exposure are from January to April and September to October, where the UV Index is at its highest. Visitors and residents should take precautionary measures to protect their skin, including wearing broad-spectrum sunscreen, protective clothing, and seeking shade, particularly during midday hours. With a burn time of only 10 minutes across all months, it is crucial to remain vigilant about sun safety to prevent harmful effects from prolonged sun exposure.

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
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
Buenos Aires	15	15	17	16	14	12	12	12	15	15	14	14
Arequipa UVI	18	17	17	15	12	10	11	13	15	17	18	17