UV Index in Assai, Brazil

Last updated: July 2, 2025

In Assai, Brazil, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With its Cfa climate, characterized by warm temperatures and varied sun exposure, residents and visitors alike should be aware of the daily UV levels to safeguard themselves against harmful effects. During peak hours, especially between 10 AM and 2 PM, the UV Index can soar to a high of 7, indicating significant risk for harm to unprotected skin. By staying informed about UV levels, you can enjoy the sun responsibly and protect your skin from potential damage.

Hourly UV Index in Assai

Throughout the day, the UV Index showcases a dynamic pattern of intensity. Starting at a gentle 1 by 07:00, the index gradually rises, reaching a moderate 2 by 09:00. As the sun climbs higher, a notable increase occurs, peaking at an elevated 7 from 12:00 to 13:00, marking the day's most intense UV exposure. The index then begins its descent, dipping to 4 by 15:00 and further down to 2 by 16:00. As evening approaches, the UV risk diminishes, with values dropping to 0 at 18:00 and remaining low for the rest of the evening. It's essential to stay protected during those peak midday hours when UV exposure can be at its strongest!

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	1	low	45 min
09:00	2	low	45 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	6	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 Assai

The UV Index exhibits notable seasonal fluctuations, with extreme levels persisting from January through April, indicating a high risk of harm from unprotected sun exposure, with a consistent burn time of just 10 minutes. May and August show a shift to very high risk, prompting a longer burn time of 15 minutes, while June and July present high exposure risks with 25 minutes of burn time. As the year progresses into September and October, the UV levels spike back to extreme, followed by high levels in November, and finally culminating in an even higher reading of 16 in December. Visitors and residents should take precautions during high-risk months (January to April, September to October, and November)—including wearing sunscreen, protective clothing, and seeking shade—to mitigate the risks associated with intense sun exposure.

Monthly Maximum UV Index for Assai, Brazil

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

The table above highlights how UV exposure in Assai 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.

Assai'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
Assai	15	15	13	11	8	6	7	9	11	13	14	16
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