UV Index in Buenos Aires, Peru

Last updated: July 2, 2025

Understanding the UV Index in Buenos Aires, Peru is essential for protecting your skin and overall health. With UV levels peaking around noon, reaching a high of 11, being aware of these fluctuations helps individuals take proactive steps to prevent sunburn and long-term skin damage. The city’s Af climate exposes residents and visitors to significant UV radiation, particularly during the hotter months. Therefore, monitoring the UV Index daily is key to enjoying the sun safely and maintaining healthy skin. Stay informed and enjoy the breathtaking beauty of Buenos Aires while keeping your health a priority!

Hourly UV Index in Buenos Aires

As the day unfolds, the UV Index reaches its peak between 11:00 AM and 12:00 PM, soaring to a striking 11. The morning starts gently, with the index at a modest 1 by 7:00 AM, slowly climbing to 4 by 9:00 AM. The sun then intensifies, pushing the index to a strong 10 at 11:00 AM, signaling it's time to seek shade and protect your skin. By 2:00 PM, it begins to wane, dropping to 8, and further decreases to 5 by 3:00 PM. As the afternoon progresses, the index continues to fall, reaching 2 at 4:00 PM, and finally settling at 1 by 5:00 PM and 0 as the sun sets at 6:00 PM. Stay aware and shield yourself during those crucial midday 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	7	high	25 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	10	very high	15 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