UV Index in Alfredo Chaves, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Alfredo Chaves, Brazil, where the climate, categorized as Aw, brings ample sunshine throughout the year. Staying informed about UV levels not only helps in preventing painful sunburns but also plays a vital role in long-term skin health, reducing the risk of skin cancer. With UV values peaking at 8 around noon, it's essential to be mindful of sun exposure during the hottest hours of the day to protect your skin from harmful rays. Whether you’re enjoying the outdoors or engaging in daily activities, knowing the UV Index can make all the difference in safeguarding your skin's well-being under the Brazilian sun.

Hourly UV Index in Alfredo Chaves

As the sun rises, the UV Index begins its ascent, starting at a gentle 1 by 7:00 AM. By 8:00 AM, it nudges up to 2, signaling a mild increase in UV exposure. The intensity heats up quickly, reaching a moderate 4 by 9:00 AM, before hitting its peak of 8 from 11:00 AM to 12:00 PM. This is the prime time for sun safety awareness! After noon, the UV Index gradually declines; by 3:00 PM, it recedes to 3, and as the day wanes, it drops significantly to 1 by 4:00 PM. By evening, UV levels have diminished, reaching 0 by 6:00 PM, offering a reprieve from the sun’s rays.

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	2	low	45 min
09:00	4	moderate	30 min
10:00	6	high	25 min
11:00	8	very high	15 min
12:00	8	very high	15 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 Alfredo Chaves

The UV Index experiences significant seasonal fluctuations, peaking from January through April, where it reaches levels classified as extreme (UV Index 16 to 11) with a burn time of just 10 minutes. The months of September to December also show extreme conditions, particularly in October and November, both with a UV Index of 14. Conversely, during the summer months of May to August, the UV Index drops to very high (UV Index 8 to 10), allowing for slightly longer burn times of 15 to 25 minutes. Visitors and residents should remain vigilant during high-risk periods, especially from January to April and September to November, and take necessary precautions such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of UV exposure.

Monthly Maximum UV Index for Alfredo Chaves, Brazil

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

The table above highlights how UV exposure in Alfredo Chaves 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.

Alfredo Chaves'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
Alfredo Chaves	16	15	13	11	8	7	8	10	12	14	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