UV Index in Viana, Brazil

Last updated: May 3, 2025

Being mindful of the UV Index in Viana, Brazil is crucial for safeguarding your skin and overall health. With the city's tropical climate, residents and visitors alike encounter varying sun intensity throughout the day, making it essential to understand UV levels to prevent sunburns and long-term skin issues. Typically featuring high UV exposure, particularly during midday hours when readings can soar to 8 from 11:00 AM to 1:00 PM, being proactive about sun protection is key to enjoying Viana's beautiful outdoors while keeping your skin safe. Stay informed and embrace the sun sensibly!

Hourly UV Index in Viana

The UV Index begins its day at a low 1 at 07:00, gradually rising as the sun climbs higher. By 09:00, it reaches a moderate 5, signaling increased sun exposure risk. The peak intensity occurs between 11:00 and 12:00, with the UV Index reaching a maximum of 8—a reminder to seek shade and protect your skin! As the afternoon progresses, the index dips to 7 at 13:00 and then decreases further to 5 at 14:00. A gentle decline continues into the evening, with values falling to 2 by 15:00 and eventually 0 as the sun sets around 19:00. Stay mindful of these changes to ensure your safety under the sun!

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	5	moderate	30 min
10:00	7	high	25 min
11:00	8	very high	15 min
12:00	8	very high	15 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	2	low	45 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 Viana

The UV Index exhibits significant seasonal variations, with extreme levels prevalent from January through April and again in September through November, where the index consistently reaches values between 13-15, indicating a burn time of just 10 minutes. The months of May through August experience a slight decrease, though they still present very high levels of UV exposure, particularly in May and July. Notably, April and September are key transition months that also require caution due to their extreme UV ratings. Visitors and residents are strongly advised to take protective measures, especially during high-risk months of January, February, March, April, September, October, November, and December, by wearing sunscreen, protective clothing, and limiting sun exposure during peak hours to minimize skin damage.

Monthly Maximum UV Index for Viana, Brazil

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

The table above highlights how UV exposure in Viana 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.

Viana'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
Viana	15	14	13	11	8	7	8	10	12	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