UV Index in Portena, Argentina

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Portena, Argentina, where the subtropical Cfa climate brings sunny days that can elevate UV exposure levels throughout the year. With peak UV indexes reaching 5 during midday, raising awareness about these levels is vital for sunburn prevention and overall skin health. In Portena, where outdoor activities are plentiful, knowing when to seek shade or apply sunscreen can make a significant difference in protecting yourself from harmful ultraviolet rays and maintaining long-term skin wellness. Stay informed and enjoy the sun safely!

Hourly UV Index in Portena

The UV Index throughout the day reveals a dynamic pattern of solar intensity. Starting with a maximum of 0 at 7 AM, it gradually rises to a moderate 5 at 1 PM, where the sun shines its strongest. By 12 PM, the UV Index hits 4, prompting the need for sun protection. The intensity begins to taper off in the afternoon, dropping to 3 by 3 PM, and further decreasing to 1 by 5 PM. As twilight approaches, the UV Index settles back to 0 by 7 PM, signaling the end of the day's sun exposure. Plan accordingly, especially during those peak 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	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	5	moderate	30 min
14:00	4	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 Portena

The UV Index displays significant seasonal changes, with January, February, March, October, November, and December representing high-risk months with extreme UV exposure (UV Index 14 to 12), where the recommended burn time is just 10 minutes. Conversely, April and September reach very high levels (UV Index 9), allowing for slightly longer exposure at 15 minutes. During the height of summer, May through July, UV exposure decreases from high to moderate categories (UV Index 6 to 4), with burn times extending to 25 and 30 minutes, respectively. For those visiting or residing in regions prone to high UV radiation, it is crucial to take precautions, especially during the extreme months, such as wearing sunscreen, protective clothing, and sunglasses, and seeking shade whenever possible to minimize skin damage.

Monthly Maximum UV Index for Portena, Argentina

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

The table above highlights how UV exposure in Portena 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.

Portena'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
Portena	14	13	12	9	6	4	5	7	9	12	14	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