UV Index in Vianopolis, Brazil

Last updated: July 2, 2025

Understanding the UV Index is crucial for residents and visitors of Vianopolis, Brazil, where the sun shines brightly in a tropical climate, presenting unique risks for skin health. The UV levels can soar to a maximum of 9 during peak hours, indicating a high potential for sunburn and long-term skin damage. By being informed about UV exposure, you can take essential precautions to protect yourself from harmful rays, ensuring a safe and enjoyable outdoor experience while embracing the beauty of this vibrant region. Stay aware, stay protected!

Hourly UV Index in Vianopolis

As the sun rises, the UV Index starts off low at a comfortable 1 from 7:00 AM to 8:00 AM. By 9:00 AM, it jumps to 3, signaling a gradual increase in sun exposure. The intensity peaks around 12:00 PM, reaching an impressive 9, making midday the most critical time for sun safety. As the afternoon unfolds, the index slowly declines; it drops to 7 by 2:00 PM, then further decreases to 4 at 3:00 PM. The later hours offer a gentle reprieve, with values falling to 1 by 5:00 PM and ultimately 0 by 6:00 PM. Remember, during those peak hours, it’s essential to protect your skin!

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	6	high	25 min
11:00	8	very high	15 min
12:00	9	very high	15 min
13:00	9	very high	15 min
14:00	7	high	25 min
15:00	4	moderate	30 min
16:00	2	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 Vianopolis

The UV Index experiences significant fluctuations throughout the year, with extreme levels prevailing from January to April and again in October to December. High-risk months notably include January, February, and November, each reaching a peak UV Index of 16, while December hits 17. Visitors and residents should take extra precautions during these periods, as the burn time is a mere 10 minutes at these extremes. In contrast, May through July sees a slight decrease, with a very high UV Index of 10-9, allowing for a burn time of 15 minutes. However, caution is still advised, particularly in August and September when the index rises back to 12. It's essential for everyone to protect their skin by using sunscreen, wearing protective clothing, and seeking shade during peak sunlight hours, especially during these high-risk months.

Monthly Maximum UV Index for Vianopolis, Brazil

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

The table above highlights how UV exposure in Vianopolis 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.

Vianopolis'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
Vianopolis	16	16	14	13	10	9	9	12	12	15	16	17