UV Index in Acu, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors in Acu, Brazil, where the sun's intensity can pose significant risks to skin health. With peak UV levels reaching as high as 11 during midday hours, awareness and education about these fluctuations are key to preventing sunburn and long-term skin damage. Acu's BSh climate means warm temperatures year-round, leading to increased sun exposure, particularly between 10:00 AM and 2:00 PM. By monitoring the UV Index, you can enjoy the beautiful outdoors while taking the necessary precautions to protect your skin.

Hourly UV Index in Acu

As the sun rises, the UV Index climbs steadily, starting at a gentle 1 at 7:00 AM. By 8:00 AM, it reaches 3, marking the beginning of increased sun exposure. The day continues to heat up, with the index peaking at a remarkable 11 from 11:00 AM to 12:00 PM, indicating a high risk for harm from unprotected sun exposure. As the afternoon sets in, it gradually declines, dropping to 6 by 2:00 PM and subsequently to 3 by 3:00 PM. As the sun begins to descend, the index returns to a safer 1 by 4:00 PM and tapers off to 0 after 6:00 PM. This hourly trend underscores the importance of sun protection during the midday hours when the UV exposure is at its highest.

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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 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 Acu

Throughout the year, the UV Index remains consistently high, peaking at 15 in March. The highest risk months for UV exposure are from January to April and November to December, where the UV Index consistently ranges from 14 to 15, indicating an extreme exposure category with a burn time of only 10 minutes. It's essential for both visitors and residents to take precautionary measures during these months, such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. Even during the summer months, with UV levels at 11 to 13, vigilance against skin damage is crucial. Regular monitoring of the UV Index and proper sun safety practices can help mitigate health risks associated with high UV exposure.

Monthly Maximum UV Index for Acu, Brazil

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

The table above highlights how UV exposure in Acu 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.

Acu'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
Acu	14	14	15	14	13	11	11	12	13	13	14	14