UV Index in Monte Siao, Brazil

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors of Monte Siao, Brazil, where the Cfa climate brings warm, humid summers and mild winters. High UV levels can lead to sunburn, skin damage, and increased risk of skin cancer, making it essential to monitor UV exposure throughout the day. Particularly, during midday hours around 12 PM, the UV Index peaks at a significant 7, signaling the need for effective sun protection. By being aware of the UV Index, you can better protect your skin and enjoy the beautiful, sunlit days in Monte Siao while minimizing health risks.

Hourly UV Index in Monte Siao

The UV Index reveals a dynamic day of sun exposure. Beginning at a gentle 1 at 7:00 AM and 8:00 AM, the index gradually rises, hitting 3 by 9:00 AM. A significant surge occurs at 10:00 AM, with the UV Index climbing to 5, peaking at an intense 7 at 12:00 PM. The intensity then begins to decline, with values of 6 at 1:00 PM, dropping to 4 by 2:00 PM, and further decreasing to 3 at 3:00 PM. As the afternoon wanes, the index returns to 1 by 4:00 PM and finally falls to 0 after 6:00 PM, marking a gentler evening. It's a reminder to stay sun-smart during those midday hours when UV exposure is at its highest!

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	6	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 Monte Siao

Throughout the year, the UV index demonstrates significant seasonal variations, with extreme levels occurring consistently from January to April and returning in September through November. The highest risk months are January, February, and December, each featuring a UV index of 16 and a swift burn time of just 10 minutes. As we transition into spring and summer, UV levels decrease slightly but remain notable; May to August sees values between 7 and 10, categorized as high to very high. Visitors and residents are strongly advised to take precautions in high-risk months, particularly during peak hours, by wearing protective clothing, using sunscreen, and seeking shade whenever possible to minimize sun exposure and reduce the risk of skin damage.

Monthly Maximum UV Index for Monte Siao, Brazil

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

The table above highlights how UV exposure in Monte Siao 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.

Monte Siao'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
Monte Siao	16	16	13	12	8	7	8	10	12	14	15	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