UV Index in Santos Dumont, Brazil

Last updated: July 2, 2025

In Santos Dumont, Brazil, understanding the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. As the sun's intensity varies throughout the day, being aware of UV levels can help prevent sunburn and promote overall skin health. With a Cwa climate that offers ample sunshine, particularly during the peak hours of 10 AM to 2 PM when UV Index readings soar to 8, locals and visitors alike must take precautions to mitigate their risk. By staying informed about daily UV exposure, you can enjoy the beautiful Brazilian outdoors while safeguarding your skin for years to come.

Hourly UV Index in Santos Dumont

The UV Index throughout the day reveals a sharp increase in intensity, peaking around 12:00 PM, where it reaches an impressive 8. Early morning hours start softly with a maximum of 1 at 07:00, gradually climbing to 3 by 09:00 and hitting 6 at 10:00. 11:00 marks a significant rise to 7, before hitting the day’s zenith at 12:00. As the afternoon progresses, we see a decline, dropping to 5 by 14:00 and diminishing further to 3 by 15:00. The UV Index then falls sharply in the late afternoon and evening, settling back down to 1 by 17:00 and ultimately reaching 0 as night takes over. It’s crucial to stay safe under the sun during those peak hours, particularly between 11:00 AM and 2:00 PM!

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	6	high	25 min
11:00	7	high	25 min
12:00	8	very high	15 min
13:00	7	high	25 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 Santos Dumont

The UV Index exhibits seasonal fluctuations with notably high levels from January to April and again in September to November, categorized as extreme, where unprotected skin can burn within 10 minutes. February emerges as one of the highest risk months with an index of 16, closely followed by January and March. During May to August, the UV Index drops to very high and high levels, with burn times extending to 15 to 25 minutes—particularly in June, which presents a slight reprieve with a 7 index. Visitors and residents are strongly advised to take protective measures against UV exposure, especially during the extreme months, by wearing sunscreen, protective clothing, and seeking shade during peak sun hours.

Monthly Maximum UV Index for Santos Dumont, Brazil

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

The table above highlights how UV exposure in Santos Dumont 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.

Santos Dumont'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
Santos Dumont	17	16	14	12	8	7	8	10	12	14	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