UV Index in San Jose, Argentina

Last updated: July 2, 2025

In San Jose, Argentina, being aware of the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels is critical, as it helps prevent sunburn and reduces long-term skin damage risks. With a Cfa climate characterized by warm summers and varied cloud coverage, residents face distinct UV exposure challenges, especially during midday when levels can peak at 6. By staying informed about the UV Index, you can enjoy the sunny days while effectively protecting yourself from harmful rays.

Hourly UV Index in San Jose

The UV Index for the day exhibits a clear progression, starting from a minimal level of 0 at 07:00. As the sun climbs higher, the index gradually increases, reaching a moderate 3 by 10:00 and peaking at a healthy level of 6 around 13:00. This midday surge highlights the importance of sun protection, as the UV exposure is at its strongest. Following peak hours, the index sees a notable decline, returning to 3 by 15:00 and tapering off to 1 by 18:00, before dropping back to 0 after sunset at 19:00. Be sure to plan outdoor activities accordingly 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	0	low	45 min
08:00	1	low	45 min
09:00	1	low	45 min
10:00	3	moderate	30 min
11:00	4	moderate	30 min
12:00	5	moderate	30 min
13:00	6	high	25 min
14:00	5	moderate	30 min
15:00	3	moderate	30 min
16:00	2	low	45 min
17:00	1	low	45 min
18:00	1	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in San Jose

Throughout the year, the UV Index experiences significant seasonal variations, with highest levels occurring from January to March, where it reaches an extreme index of 15 to 12 and a burn time as low as 10 minutes. This trend continues with high-risk months in October and November that again escalate to index levels of 14. During the spring and summer months, the index decreases slightly: in April, it drops to 10, and by May, it sits at 6. While summer sees lower levels, July and August maintain a high exposure category of 6 to 7, with longer burn times of 25-30 minutes. Visitors and residents should take extra precautions during the extreme months—particularly from January to March and in late October to November—by wearing protective clothing, applying sunscreen, and seeking shade to minimize harmful UV exposure.

Monthly Maximum UV Index for San Jose, Argentina

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

The table above highlights how UV exposure in San Jose 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 Jose'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
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 Jose	15	14	12	10	6	5	6	7	10	13	14	14
San Miguel de Tucuman UVI	15	14	13	10	7	5	6	7	10	13	15	15