UV Index in Cacu, Brazil

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Cacu, Brazil, where the sun's intensity can vary significantly throughout the day. As you enjoy the beautiful, tropical climate, it's essential to be aware of rising UV levels that peak during midday, posing serious risks for sunburn and long-term skin health. With maximum UV values soaring to 8 around noon, it’s imperative to take precautions. Staying informed about local UV exposure not only helps in safeguarding your skin but also enhances your overall well-being. Remember, the sun can be deceptive, and knowledge is your best defense against its harmful effects!

Hourly UV Index in Cacu

At dawn, the UV Index remains low, peaking at 1 by 08:00. As the sun rises higher, a notable increase occurs, reaching 3 at 09:00 and escalating dramatically to a maximum of 8 from 12:00 to 13:00. This midday surge indicates a higher risk for sun exposure, making it essential to take precautions such as wearing sunscreen and protective clothing. The intensity then gradually declines, dropping to 4 by 15:00, and continuing its descent to 0 by 19:00, marking the end of the sun’s peak influence for the day. Stay mindful of these hourly fluctuations to enjoy the sun safely!

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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	8	very high	15 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 Cacu

Throughout the year, the UV Index in the region displays notable seasonal variations, with extreme values recorded from January to April and again in late summer and fall. The highest risk months are January (UV Index 15), February (UV Index 16), and December (UV Index 16), where sun exposure should be limited to 10 minutes to avoid severe burns. In contrast, May to July sees a drop to very high levels, allowing for slightly longer exposure times of 15 minutes. As visitors and residents plan their outdoor activities, it is crucial to remain vigilant, particularly during the high-risk months, and to employ protective measures such as wearing sunscreen, hats, and sunglasses, especially during peak sun hours. Always monitor the UV Index and adapt your sun safety practices accordingly!

Monthly Maximum UV Index for Cacu, Brazil

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

The table above highlights how UV exposure in Cacu 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.

Cacu'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
Cacu	15	16	14	12	10	8	9	11	12	15	15	16
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13