UV Index in Alvorada, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Alvorada, Brazil, as it helps inform daily sun safety measures and promotes healthier skin. With the local climate boasting a tropical savanna atmosphere, the UV levels can peak dramatically during midday hours, reaching a maximum index of 11 around noon. This emphasizes the importance of being aware of UV exposure to prevent painful sunburns and long-term skin health issues. By familiarizing yourself with the typical UV Index trends throughout the day, you can enjoy the beautiful outdoors while keeping your skin safe and protected from harmful rays.

Hourly UV Index in Alvorada

As the day unfolds, the UV Index reaches its peak between 11:00 AM and 12:00 PM, soaring to a striking 11. The morning starts gently, with the index at a modest 1 by 7:00 AM, slowly climbing to 4 by 9:00 AM. The sun then intensifies, pushing the index to a strong 10 at 11:00 AM, signaling it's time to seek shade and protect your skin. By 2:00 PM, it begins to wane, dropping to 8, and further decreases to 5 by 3:00 PM. As the afternoon progresses, the index continues to fall, reaching 2 at 4:00 PM, and finally settling at 1 by 5:00 PM and 0 as the sun sets at 6:00 PM. Stay aware and shield yourself during those crucial midday 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	1	low	45 min
08:00	2	low	45 min
09:00	4	moderate	30 min
10:00	7	high	25 min
11:00	10	very high	15 min
12:00	11	extreme	10 min
13:00	10	very high	15 min
14:00	8	very high	15 min
15:00	5	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 Alvorada

Throughout the year, UV levels exhibit significant seasonal changes, with extreme UV Index values dominating from January to April (UV Index 16 to 13), and again from August to November (UV Index 12 to 15). These months, particularly January to April and August, pose the highest risk, with a burn time of just 10 minutes. In contrast, June and July see a slight dip to a very high exposure category but still require caution, allowing a burn time of 15 minutes. Visitors and residents are advised to take proactive sun protection measures during these high-risk months—wearing sunscreen, protective clothing, and seeking shade whenever possible to mitigate harmful UV exposure.

Monthly Maximum UV Index for Alvorada, Brazil

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

The table above highlights how UV exposure in Alvorada 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.

Alvorada'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
Alvorada	16	15	14	13	11	9	10	12	13	15	15	15