UV Index in Barro Alto, Brazil

Last updated: July 2, 2025

In Barro Alto, Brazil, understanding the UV Index is crucial for safeguarding your skin health, especially in a region characterized by its tropical climate. With UV levels frequently peaking around noon—reaching a maximum index of 11—it's vital to recognize how intensively the sun's rays can affect you. Awareness of these levels not only helps in preventing sunburn but also plays a key role in reducing the risk of long-term skin damage. As you enjoy this beautiful locale, being informed about the UV exposure risks throughout the day will empower you to make smarter choices for your skin's protection.

Hourly UV Index in Barro Alto

As the sun rises, the UV Index steadily increases, starting at a mild 1 at 7:00 AM. By 9:00 AM, it surges to a moderate 5, signaling the need for some sun protection. The intensity peaks dramatically at 12:00 PM with a daunting 11, marking the height of solar exposure where precautions are essential. As the afternoon progresses, the index begins to decline, but still remains significant at 9 by 1:00 PM. By 3:00 PM, it drops to 4, and the late afternoon sees it further fade to a gentle 1 by 5:00 PM. By sunset, the UV Index diminishes to 0, providing a reassuring end to a day of sun. Stay safe and enjoy the sunshine!

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	5	moderate	30 min
10:00	8	very high	15 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	9	very high	15 min
14:00	7	high	25 min
15:00	4	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 Barro Alto

Throughout the year, UV Index levels exhibit significant seasonal variations, with extreme risk persisting from January to April, where the index consistently reaches 15 and a burn time of just 10 minutes. High-risk months include October and November, also registering a UV Index of 15, alongside January through April. Though the UV Index slightly decreases in June (10) and July (11), the risk remains high, particularly in August and September (13). Residents and visitors are urged to take precautionary measures during these months: wear sunscreen, seek shade, and limit sun exposure during peak hours to mitigate skin damage and ensure safety under the sun.

Monthly Maximum UV Index for Barro Alto, Brazil

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

The table above highlights how UV exposure in Barro Alto 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.

Barro Alto'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
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13
Barro Alto	15	15	15	14	12	10	11	13	13	15	15	15