UV Index in San Justo, Argentina

Last updated: June 2, 2025

Understanding the UV Index in San Justo, Argentina is crucial for protecting your skin and overall health. As this vibrant city basks in a Cfa climate, residents and visitors alike should be mindful of daily UV levels, particularly during peak hours when indices can reach up to 4 around midday. Awareness of the UV Index helps prevent sunburn, reduces the risk of long-term skin damage, and promotes healthier outdoor experiences. With the sun's rays peaking from late morning to early afternoon, taking precautions is essential to enjoy San Justo’s sunny disposition safely.

Hourly UV Index in San Justo

The UV Index throughout the day reveals a dynamic pattern of sun intensity. In the morning, it starts off low, peaking at 1 by 09:00. As the sun climbs higher, we see a steady increase with the index reaching 3 by 11:00. The highest point occurs from 12:00 to 13:00, where the UV Index hits a robust 4, indicating a need for sun protection during those hours. Following this peak, the index gradually declines, returning to 2 at 15:00, and then dropping back down to 0 by 18:00, marking the end of significant UV exposure for the day. Plan your outdoor activities accordingly to stay safe under the sun!

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	0	low	45 min
08:00	1	low	45 min
09:00	1	low	45 min
10:00	2	low	45 min
11:00	3	moderate	30 min
12:00	4	moderate	30 min
13:00	4	moderate	30 min
14:00	3	moderate	30 min
15:00	2	low	45 min
16:00	1	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 San Justo

The UV Index shows significant seasonal changes in sun exposure, with high-risk months occurring from January to April and during October to November. The UV Index peaks at 15 in January and gradually decreases to 4 by July before rising again. Notably, from January to March, the exposure category remains in the extreme range, with a quick burn time of only 10 minutes. In contrast, May and June experience a moderate index, allowing for longer safe exposure times of 30 minutes. Visitors and residents should take extra precautions during high-risk months, including wearing sunscreen, seeking shade, and wearing protective clothing, especially when the index is at its peak.

Monthly Maximum UV Index for San Justo, Argentina

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in San Justo. 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 San Justo, 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 San Justo UV Index with Other Argentina Cities

The table above highlights how UV exposure in San Justo compares to other major locations across Argentina. This comparison helps travelers and residents better understand regional sun intensity and plan outdoor activities with sun safety in mind.

San Justo's solar exposure compared to other cities in Argentina. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Buenos Aires UVI	14	13	11	7	5	4	4	6	8	10	13	14
Rosario UVI	14	13	11	8	5	4	4	6	8	11	13	14
San Justo	15	13	11	8	5	4	4	6	8	11	13	14
Mendoza UVI	15	14	12	8	6	4	5	6	9	12	14	15
Cordoba UVI	15	13	12	9	6	4	5	7	9	12	14	15
San Miguel de Tucuman UVI	15	14	13	10	7	5	6	7	10	13	15	15