UV Index in Cabo Frio, Brazil

Last updated: July 2, 2025

Understanding the UV Index in Cabo Frio, Brazil, is vital for protecting your skin and overall health amid its tropical Aw climate. With UV levels peaking at 7 during midday, awareness of these fluctuations can help you prevent sunburns and long-term skin damage. Cabo Frio’s beautiful beaches and sunny weather offer great opportunities for outdoor activities, but they also come with the risk of high UV exposure. Stay informed about the UV Index to enjoy the sun safely and keep your skin healthy!

Hourly UV Index in Cabo Frio

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 Cabo Frio

The UV Index exhibits significant seasonal variations, peaking during the winter months with extreme levels, especially from January to April, where values range from 13 to 16 and the burn time is notably short at 10 minutes. This trend continues into September and October, with similarly high indices warranting caution. As the year progresses, May to August sees a moderate decline in UV levels, categorized as very high to high, allowing slightly longer exposure times of up to 25 minutes in June and July. High-risk months include January, February, March, April, September, October, and November, when the UV Index remains in the extreme category, necessitating strong sun protection measures. Visitors and residents are advised to wear protective clothing, use broad-spectrum sunscreen, and limit sun exposure during peak hours, particularly in higher risk months to ensure safety and skin health.

Monthly Maximum UV Index for Cabo Frio, Brazil

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

The table above highlights how UV exposure in Cabo Frio 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.

Cabo Frio'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
Cabo Frio	16	14	13	11	8	6	7	9	11	13	14	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