UV Index in Rio Casca, Brazil

Last updated: June 2, 2025

Staying aware of the UV Index in Rio Casca, Brazil, is crucial for anyone looking to protect their skin from harmful sun exposure. Understanding the UV levels throughout the day aids in preventing sunburns and promoting overall skin health, especially in a region characterized by a warm climate with significant sun exposure. With peak UV readings hitting 7 around midday, residents and visitors alike should take precautions to minimize risks during these hours. By staying informed and taking appropriate measures, you can enjoy the beautiful Brazilian sun while safeguarding your skin's health.

Hourly UV Index in Rio Casca

The UV Index data paints a clear picture of how exposure to ultraviolet rays varies throughout the day. Starting at a low level of 1 at 07:00, the index gradually climbs to peak at 7 from 11:00 to 12:00, indicating the times when sun protection is most crucial. As the afternoon progresses, the index dips to 6 at 13:00, then gently declines to 4 by 14:00. The evening hours see a significant drop, with values falling to 2 at 15:00 and retreating to 1 at 16:00. By nightfall, the UV Index drops to 0 from 18:00 onward, signalling a safe time for outdoor activities without the need for sun protection. Enjoy the sunshine, but be mindful of the peak 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	3	moderate	30 min
10:00	5	moderate	30 min
11:00	7	high	25 min
12:00	7	high	25 min
13:00	6	high	25 min
14:00	4	moderate	30 min
15:00	2	low	45 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 Rio Casca

Throughout the year, the UV Index demonstrates significant seasonal variations, with January through April consistently classified under the extreme exposure category, peaking at 16 in January and December. The high-risk months include January, February, March, April, September, October, November, and December, where a rapid onset of sunburn can occur in as little as 10 minutes. In contrast, May through August display slightly lower indices, ranging from 7 to 10, classified as high to very high, with burn times increasing to 15 to 25 minutes. To ensure safety, both visitors and residents are advised to take proper precautions during these high-risk months, such as wearing protective clothing, applying broad-spectrum sunscreen, and limiting sun exposure during peak hours.

Monthly Maximum UV Index for Rio Casca, Brazil

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

The table above highlights how UV exposure in Rio Casca 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.

Rio Casca'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
Rio Casca	16	15	14	12	9	7	8	10	12	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