UV Index in Buenos Aires, Peru

Last updated: June 2, 2025

In Buenos Aires, Peru, staying informed about the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. Understanding UV levels not only helps in preventing sunburns but also fosters overall skin health, reducing the risk of long-term damage. The city's Af climate means residents and visitors alike need to be mindful of UV exposure, especially during peak hours when the index can soar as high as 12. By being aware of the UV Index, you can enjoy the sunny days safely and effectively!

Hourly UV Index in Buenos Aires

The UV Index throughout the day reveals a dynamic range of solar intensity, peaking at 12 around noon. Starting the day gently, the index registers a low 1 at 7:00 AM, gradually rising to 2 by 8:00 AM. As the sun climbs higher, it reaches 5 by 9:00 AM, then surges to a robust 11 by 11:00 AM, signaling higher caution for outdoor activities. The peak at midday is a daunting 12, urging everyone to seek shade and wear protective gear. The intensity begins to taper off in the afternoon, dropping back to 8 at 2:00 PM and further to 5 by 3:00 PM. By the late afternoon, the index drops significantly to 1 at 5:00 PM and settles at 0 by 6:00 PM, giving a gentle reminder that the sun's might can vary dramatically throughout the day.

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	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	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, the UV Index remains extremely high in this region, with values consistently ranging from 11 to 16. Notably, the months of January through April exhibit the highest UV Index readings, reaching a peak of 16, indicating a high-risk period for sunburn with a burn time of just 10 minutes. While the index slightly decreases in May and June, it remains critical to stay vigilant, with sustained extreme levels until September before dropping gradually in the fall. For both visitors and residents, it is essential to take protective measures such as wearing sunscreen, long clothing, and seeking shade, particularly during these high-risk months when the UV Index poses a significant threat to skin health.

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