UV Index in Sao Joao del Rei, Brazil

Last updated: June 2, 2025

Understanding the UV Index in São João del Rei, Brazil, is crucial for maintaining your skin health and preventing sunburn. With a Cwa climate that features warm summers and moderate sunshine, the UV levels can peak at 7, particularly between 11 AM and 1 PM. This makes it essential for residents and visitors alike to stay informed about UV exposure risks in order to protect themselves from the harmful effects of ultraviolet radiation. By knowing when to seek shade or apply sunscreen, you can enjoy the stunning natural beauty of São João del Rei while safeguarding your skin’s well-being.

Hourly UV Index in Sao Joao del Rei

The UV Index data for the day reveals a gradual rise in solar intensity as the hours progress. Starting at a low 1 at both 7:00 AM and 8:00 AM, the index begins to climb, reaching a peak of 7 by 11:00 AM and 12:00 PM. The intensity then starts to diminish, descending to 6 at 1:00 PM, before tapering off to 4, 3, and finally back to 1 by 4:00 PM, with the day concluding at 0 UV Index after 6:00 PM. It's clear that the midday hours pose the greatest risk for sun exposure, making it essential to stay protected during those critical times.

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	1	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 Sao Joao del Rei

The seasonal UV index in our region shows significant variations throughout the year, with extreme levels dominating from January through April, where the UV index reaches a peak of 17 in January. The high-risk months for UV exposure are January through April and again in September to November, where the UV index remains at 10 or higher, indicating an exposure category classified as extreme. Visitors and residents are strongly advised to take precautions during these periods, such as wearing sunscreen, protective clothing, and seeking shade to minimize the risk of sunburn, especially when outdoor activities are planned. In the summer months of June to August, while the UV index decreases to 7 to 10, it is still categorized as high to very high, and individuals should remain vigilant.

Monthly Maximum UV Index for Sao Joao del Rei, Brazil

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

The table above highlights how UV exposure in Sao Joao del Rei 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 del Rei'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
Sao Joao del Rei	17	16	14	12	9	7	8	10	12	14	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