UV Index in Quatro Barras, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents of Quatro Barras, Brazil, where the Cfb climate brings varied weather conditions that can still expose you to harmful ultraviolet rays. With UV levels peaking between 12:00 PM and 1:00 PM, reaching as high as 6, awareness can help you take proactive steps to prevent sunburn and protect your skin health. Regularly monitoring the UV Index not only aids in planning outdoor activities safely but also promotes long-term skin health, ensuring you enjoy the beautiful Brazilian sun without the risks associated with overexposure.

Hourly UV Index in Quatro Barras

The UV Index for the day shows a noticeable fluctuation as the hours progress. Starting off at a mild level of 1 at 7:00 and 8:00, the index begins to rise, reaching a peak of 6 between 12:00 and 13:00—the perfect time to seek shade if you’re outdoors! As the afternoon rolls on, the index dips gradually, dropping to 3 by 15:00, then further to 1 by 17:00. Finally, the UV levels fall to 0 after 18:00, signaling a comfortable end to the day. Remember, during those peak hours, it’s essential to protect your skin from overexposure!

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	4	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 Quatro Barras

The UV Index experiences significant seasonal fluctuations, with the highest values occurring from January to April, where it consistently reaches extremes of 16 to 11, indicating a very high risk of harm from unprotected sun exposure; in these months, burn time is as brief as 10 minutes. As spring transitions to summer, the index decreases, peaking at 8 in May and then dropping to 6 from June to July, marking a high risk category with a slightly extended burn time of 25 minutes. However, August sees a rise back to 9 (very high), followed by a return to extreme levels in September and October. November and December maintain high values of 15, suggesting that extreme caution is needed year-round. Visitors and residents should prioritize sun protection during these high-risk months, applying sunscreen, wearing protective clothing, and seeking shade to reduce the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Quatro Barras, Brazil

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

The table above highlights how UV exposure in Quatro 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.

Quatro 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
Sao Paulo UVI	16	15	12	11	8	6	7	9	11	13	14	15
Quatro Barras	16	15	13	11	8	6	6	9	11	14	15	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