UV Index in Sao Joao, Brazil

Last updated: June 2, 2025

In Sao Joao, Brazil, being aware of the UV Index is crucial for maintaining healthy skin and preventing sunburn. With the town's tropical climate and the potential for high UV exposure, understanding the daily UV levels can significantly impact your sun safety practices. During peak hours, particularly between 10:00 AM and 12:00 PM, UV Index values soar to 11, indicating extreme risk. This emphasizes the necessity of protecting your skin to avoid harmful effects and ensure your outdoor adventures in this vibrant locale remain enjoyable and safe. Stay informed and take action to safeguard your skin health under the Brazilian sun!

Hourly UV Index in Sao Joao

As the sun rises, the UV Index begins to climb, starting at a modest 2 at 7:00 AM. By 9:00 AM, it surges to 7, signaling that it’s time to think about protection. The peak intensity arrives at 11:00 AM and 12:00 PM, with a soaring UV Index of 11, highlighting a significant risk for unprotected skin. As the afternoon unfolds, the values begin to decline, dropping to 9 at 1:00 PM and gradually diminishing to 5 by 2:00 PM. By 3:00 PM, only 3 is left, before tapering to 1 at 4:00 PM and remaining low for the evening, ultimately reaching 0 by 6:00 PM. This data paints a clear picture: in the battle against UV exposure, midday vigilance is crucial!

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	2	low	45 min
08:00	4	moderate	30 min
09:00	7	high	25 min
10:00	10	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	9	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 Sao Joao

Throughout the year, the UV Index remains consistently high, with extreme exposure levels from January to November, and only slightly lowering in June and July. The highest risk months are January, March, November, and December, each reaching a UV Index of 15, where the burn time is limited to just 10 minutes. Even during the summer months, the UV Index hovers between 11 and 12, indicating a persistent threat. Visitors and residents are strongly advised to take necessary precautions, such as wearing protective clothing, applying sunscreen frequently, and seeking shade, especially during the peak hours of sunlight. Maintaining awareness of these UV changes is crucial for safe outdoor activities year-round.

Monthly Maximum UV Index for Sao Joao, Brazil

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

The table above highlights how UV exposure in Sao Joao 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.

Sao Joao'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
Fortaleza UVI	14	14	15	15	13	11	11	12	13	13	13	13
Sao Joao	15	14	15	14	12	11	11	12	14	14	15	15