UV Index in Angra dos Reis, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Angra dos Reis, Brazil, as it plays a vital role in protecting your skin from harmful ultraviolet radiation. With peak levels reaching as high as 7 during mid-day hours, awareness of UV intensity can help prevent painful sunburns and reduce long-term skin health risks such as cancer. Nestled in a Cfa climate zone, Angra dos Reis experiences ample sunshine, making it essential for everyone to monitor UV levels throughout the day. Whether you’re soaking up the sun on the beach or exploring the stunning natural surroundings, staying informed about the UV Index is key to enjoying the outdoors safely.

Hourly UV Index in Angra dos Reis

The UV Index for the day provides a clear picture of sun exposure. Starting off gently at 1 in the early hours, the intensity gradually builds, reaching a peak of 7 between 11:00 and 12:00. This is the ideal time for sun protection, as skin can burn quickly. As the afternoon progresses, the index declines, dropping to 3 by 15:00 and further down to 1 by late afternoon. After sunset, the UV Index falls to 0, indicating safe conditions. Stay sun smart, especially during the peak hours for maximum protection!

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	6	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 Angra dos Reis

Throughout the year, UV Index levels exhibit significant seasonal variations, with extreme levels predominantly occurring from January to April and again in September to November. High-risk months include January to April and September to November, where the UV Index consistently reaches extreme levels (10 or above) with burn times as short as 10 minutes. In contrast, May to August shows a decrease in UV intensity, although May and August still classify as very high with burn times of 15 minutes. To ensure safety, it is crucial for both visitors and residents to take precautions during peak UV months by wearing suitable sun protection like sunscreen, hats, and sunglasses, particularly during midday hours when UV exposure is at its highest.

Monthly Maximum UV Index for Angra dos Reis, Brazil

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

The table above highlights how UV exposure in Angra dos Reis 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.

Angra dos Reis'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
Angra dos Reis	16	15	13	11	8	6	7	9	12	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