UV Index in Altinho, Brazil

Last updated: August 1, 2025

In Altinho, Brazil, being aware of the UV Index is essential for protecting your skin and overall health. Understanding the daily UV levels helps residents and visitors alike to prevent sunburn and reduce the risk of long-term skin damage, especially during the peak exposure hours. Altinho's tropical climate sees high UV index readings, with the most intense sunlight occurring between 10 AM and 1 PM, where levels often soar to 11, marking extreme risk. With such elevated UV exposure, it's crucial to stay informed and take proactive measures to safeguard your skin while enjoying the beautiful Brazilian sun.

Hourly UV Index in Altinho

The UV Index throughout the day reveals a striking peak in intensity around midday. Beginning at a gentle 1 by 7:00 AM, the index escalates progressively, reaching a notable 11 by 11:00 AM and remaining high until 12:00 PM. As the afternoon unfolds, the intensity gradually diminishes, diving to 6 by 2:00 PM, then tapering off further to a soft 3 by 3:00 PM. By 4:00 PM and beyond, UV exposure recedes, settling back to a low 1 by 5:00 PM, and disappearing entirely after 6:00 PM. This dramatic rise and fall underscore the importance of sun safety during those peak hours!

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	2	low	45 min
08:00	4	moderate	30 min
09:00	8	very high	15 min
10:00	11	extreme	10 min
11:00	12	extreme	10 min
12:00	12	extreme	10 min
13:00	10	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 Altinho

Throughout the year, the UV Index remains extremely high, consistently at 15 or 14 from January to March and notably high in November and December. The highest risk months for UV exposure are from January to March, when the UV Index is consistently at its peak, but danger remains significant across all months, particularly with a burn time of only 10 minutes regardless of the month. Visitors and residents are strongly advised to take precautionary measures during these months, including wearing sunscreen, protective clothing, and staying in shaded areas during peak sunlight hours to minimize their risk of sunburn and skin damage. It’s crucial to remain vigilant all year round, as harmful UV radiation persists even in the cooler months.

Monthly Maximum UV Index for Altinho, Brazil

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

The table above highlights how UV exposure in Altinho 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.

Altinho'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
Altinho	15	15	15	14	12	11	11	12	14	14	15	15