UV Index in Serro, Brazil

Last updated: June 2, 2025

Understanding the UV Index is essential for the residents of Serro, Brazil, where the sun's rays can pose significant risks to skin health. By remaining aware of UV levels throughout the day, you can effectively prevent sunburn and protect yourself from long-term skin damage. Serro, with its tropical climate, experiences higher UV exposure, particularly during mid-day hours when levels peak at 8 from 11:00 AM to 12:00 PM. Embracing this knowledge not only ensures your safety but also enhances your outdoor enjoyment in this beautiful region.

Hourly UV Index in Serro

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 Serro

The seasonal UV changes reveal a consistently high risk of sun exposure, particularly during the winter and spring months, where the UV Index remains extremely high, peaking at 17 in January and gradually declining to 10 by late spring. The high-risk months are primarily from January to April, and again in August through November, demonstrating extreme levels of UV radiation with a critical burn time of just 10 minutes. As summer arrives, while UV radiation decreases slightly, May through July present a very high exposure category with a burn time of 15 minutes. It is crucial for both visitors and residents to take proper precautions during these times—wear sunscreen, protective clothing, and seek shade when necessary to minimize harmful effects. Stay vigilant, especially during peak UV hours, to ensure your safety under the sun.

Monthly Maximum UV Index for Serro, Brazil

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

The table above highlights how UV exposure in Serro 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.

Serro'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
Salvador UVI	14	14	14	13	10	9	9	12	12	15	15	14
Serro	17	16	15	13	10	8	9	11	13	14	15	16
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13