UV Index in Rio Bonito, Brazil

Last updated: July 2, 2025

Understanding the UV Index in Rio Bonito, Brazil, is essential for protecting yourself from the sun’s harmful rays. With a tropical climate characterized by high sun exposure, knowing the UV levels can help prevent sunburn and promote long-term skin health. During peak hours, particularly between 10 AM and 1 PM, the UV Index can reach levels as high as 7, indicating a significant risk of harm from unprotected sun exposure. Staying informed about these levels is crucial for enjoying outdoor activities safely while safeguarding your skin against potential damage.

Hourly UV Index in Rio Bonito

The UV Index today marks a dynamic progression throughout the day, starting gently at 1 at 7:00 AM. As the sun climbs higher, it peaks at 7 by 11:00 AM and 12:00 PM, indicating a significant level of UV radiation that calls for precautions. Following this peak, the index begins to taper off, dropping to 6 at 1:00 PM, then sliding further to 4 by 2:00 PM. Finally, as sunlight wanes, it descends to 1 at 4:00 PM and 5:00 PM, before reaching 0 after 6:00 PM. Stay safe and protected during 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	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 Rio Bonito

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 Rio Bonito, Brazil

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

The table above highlights how UV exposure in Rio Bonito 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 Bonito'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
Rio Bonito	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