UV Index in Barro Alto, Brazil

Last updated: June 2, 2025

In Barro Alto, Brazil, awareness of the UV Index is critical for safeguarding our skin and overall health. Understanding UV levels can help prevent sunburns and long-term skin damage, especially in this tropical climate, where exposure to harmful rays peaks during midday. With UV Index readings soaring to 10 around noon, the risks associated with sun exposure can be significant, making it essential to stay informed and take protective measures during the hottest hours of the day. Whether you're enjoying outdoor activities or simply soaking up the sun, knowing the UV Index is key to maintaining your skin's health and vitality.

Hourly UV Index in Barro Alto

Throughout the day, the UV Index exhibits a distinct peak just before noon. Starting off at a mild 1 at 7:00 AM, it rises steadily, reaching 2 by 8:00 AM. By 9:00 AM, it jumps to 5, and then it surges to an impressive 10 at both 11:00 AM and 12:00 PM, indicating a high level of sun exposure risk. As the afternoon unfolds, the readings dip to 9 at 1:00 PM and subsequently decline further to 6 at 2:00 PM. By 3:00 PM, it drops to 3, and the day winds down with values of 1 at 4:00 and 5:00 PM, before fading to 0 by 6:00 PM and beyond. For optimal sun safety, keep to the shade as the sun peaks!

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	10	very high	15 min
13:00	9	very high	15 min
14:00	6	high	25 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 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