UV Index in Tres Barras, Brazil

Last updated: July 2, 2025

In Tres Barras, Brazil, understanding the UV Index is essential for protecting your skin and overall health. With its temperate Cfa climate, residents and visitors alike face unique UV exposure risks, especially during the peak hours of midday. The UV levels can rise to a maximum of 6 around noon, significantly increasing the chances of sunburn and long-term skin damage. By staying informed about the UV Index, you can take proactive steps to safeguard yourself and enjoy the beautiful outdoors without compromising your skin health.

Hourly UV Index in Tres Barras

The UV Index for the day demonstrates a clear progression of sun intensity as the hours unfold. Starting at 07:00, the index remains low at 1, indicating minimal risk for sun exposure. However, as we approach 10:00, it begins to tick upwards, peaking at 6 between 12:00 and 13:00—the optimal time for sunscreen application and shade seeking. From there, it gradually declines, dropping to 1 by 17:00 and finally reaching 0 after 18:00, when the sun begins to set. Stay vigilant and protect your skin 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	1	low	45 min
08:00	1	low	45 min
09:00	2	low	45 min
10:00	3	moderate	30 min
11:00	5	moderate	30 min
12:00	6	high	25 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	0	low	45 min
19:00	0	low	45 min

Monthly UV Index Trends in Tres Barras

Throughout the year, the UV Index in our region exhibits significant seasonal variations, with the highest risk months occurring from January to April, where the UV Index consistently reaches extreme levels between 15 and 13 and the burn time is merely 10 minutes. As we transition into May through July, the UV Index decreases slightly to 7 and 6, categorized as high, allowing for a longer burn time of 25 minutes. However, August experiences a spike again to 8, deemed very high, with a burn time of 15 minutes. In September and October, the UV levels rise back to extremes at 11 and 13, leading into the winter months of November and December, which again reflect extreme UV levels of 15. Visitors and residents should take preventive measures, such as wearing sunscreen, protective clothing, and sunglasses during the high-risk months, especially from January to April, and remain vigilant even in the late summer and early autumn, ensuring safe sun exposure throughout the year.

Monthly Maximum UV Index for Tres Barras, Brazil

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

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

Tres Barras's solar exposure compared to other cities in Brazil. Generated using Copernicus Atmosphere Monitoring Service information.
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Rio de Janeiro UVI	15	14	13	10	7	6	7	9	11	12	13	15
Tres Barras	15	15	13	11	7	6	6	8	11	13	15	15
Sao Paulo UVI	16	15	12	11	8	6	7	9	11	13	14	15
Belo Horizonte UVI	17	16	14	12	9	7	8	10	12	13	14	16
Salvador UVI	14	14	14	13	10	9	9	12	12	15	15	14
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13