UV Index in Cachoeira, Brazil

Last updated: June 2, 2025

In Cachoeira, Brazil, understanding the UV Index is crucial for protecting your skin from harmful ultraviolet rays. With the region's Af climate, residents and visitors alike face varying UV exposure levels throughout the day, especially peaking between 10 AM and 2 PM when values can reach as high as 9. Being aware of these levels is essential for effective sunburn prevention and maintaining overall skin health. By staying informed about the UV Index, you can enjoy the beautiful sunny days in Cachoeira while minimizing the risk of sun damage.

Hourly UV Index in Cachoeira

The UV Index throughout the day showcases a distinctive pattern, peaking dramatically as the sun ascends. From 7:00 AM to 8:00 AM, the index starts at a low 1, gradually climbing to a moderate 3. By 9:00 AM, the intensity rises to 5, but the real surge occurs between 10:00 AM and 12:00 PM, where it reaches a maximum of 9, indicating a high risk for sun exposure. As afternoon approaches, the UV Index begins to taper off, dropping to 5 by 2:00 PM, and further declining to 3 at 3:00 PM. The day winds down with 1 at 4:00 PM and dwindling to 0 by 6:00 PM. To ensure safety during peak hours, it's crucial to take precautions from 10:00 AM to 12:00 PM, when UV radiation is 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	3	moderate	30 min
09:00	5	moderate	30 min
10:00	8	very high	15 min
11:00	9	very high	15 min
12:00	9	very high	15 min
13:00	8	very high	15 min
14:00	5	moderate	30 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 Cachoeira

The UV Index displays significant seasonal variations, with extreme ratings of 14 occurring from January to April, and again in October and November. The high-risk months for UV exposure include January, February, March, October, and November, where the burn time is notably low at just 10 minutes. The summer months, June and July, experience a slight decrease in UV intensity to 9 and 10, respectively, categorized as very high, allowing for a slightly longer burn time of 15 minutes. Visitors and residents are advised to take precautions during high UV periods, such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade, especially during the peak exposures in the identified high-risk months.

Monthly Maximum UV Index for Cachoeira, Brazil

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

The table above highlights how UV exposure in Cachoeira 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.

Cachoeira'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
Cachoeira	14	14	14	13	11	9	10	12	13	15	15	14
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13