UV Index in Arcos, Brazil

Last updated: June 2, 2025

In Arcos, Brazil, staying aware of the UV Index is crucial for protecting your skin from harmful radiation. With understanding UV levels, residents can take proactive steps to prevent sunburn and maintain long-term skin health. Given Arcos' Cwa climate, which features hot summers and mild winters, it's particularly important to acknowledge the high UV exposure risks during peak hours, especially when the UV Index reaches 7 between 11:00 AM and 1:00 PM. By staying informed, you can enjoy the beautiful Brazilian sun safely!

Hourly UV Index in Arcos

As the sun rises, the UV Index remains low at 1 from 07:00 to 08:00, offering a gentle start to the day. However, as the hours progress, the intensity increases, reaching 3 by 09:00 and peaking at 7 between 11:00 and 13:00. This midday surge signifies the sun's powerful rays, urging everyone to take precautions for skin protection. As the afternoon wanes, the UV Index begins to decline, dropping to 5 at 14:00, and further decreasing to 3 by 15:00. The evening brings relief, with the index falling to 1 by 16:00 and 0 from 18:00 onward. Embrace the early hours for outdoor activities, but stay vigilant during lunchtime when the sun is at its strongest!

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	3	moderate	30 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 Arcos

The UV Index experiences significant fluctuations throughout the year, with extreme levels recorded from January to April and again in August through November. Notably, the highest risk months are January, February, and March, where the UV Index peaks at 16 and a mere 10 minutes of exposure can lead to sunburn. As the season progresses into summer, the risk decreases slightly, with June showing a high index of 7 and a longer burn time of 25 minutes. However, visitors and residents should remain cautious, especially during the very high months of May and July, when the burn time reduces back to 15 minutes. Overall, it is crucial for everyone to take protective measures against UV exposure year-round, particularly in these high-risk months, by using sunscreen, wearing protective clothing, and seeking shade during peak hours.

Monthly Maximum UV Index for Arcos, Brazil

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

The table above highlights how UV exposure in Arcos 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.

Arcos'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
Belo Horizonte UVI	17	16	14	12	9	7	8	10	12	13	14	16
Arcos	16	16	14	12	9	7	8	11	13	14	15	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