UV Index in Uirauna, Brazil

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents and visitors in Uirauna, Brazil, where the sun can be relentless. With a climate characterized by high temperatures and intense sunlight, awareness of UV levels plays a vital role in preventing sunburn and protecting skin health. During peak hours, especially between 10:00 AM and 12:00 PM, the UV Index can soar to dangerous levels of 11, indicating an urgent need for sun protection measures. By staying informed about daily UV exposure risks, you can enjoy the sunny days while safeguarding your skin against harmful effects.

Hourly UV Index in Uirauna

As the sun rises, the UV Index climbs steadily, starting at a gentle 1 at 7:00 AM. By 8:00 AM, it reaches 3, marking the beginning of increased sun exposure. The day continues to heat up, with the index peaking at a remarkable 11 from 11:00 AM to 12:00 PM, indicating a high risk for harm from unprotected sun exposure. As the afternoon sets in, it gradually declines, dropping to 6 by 2:00 PM and subsequently to 3 by 3:00 PM. As the sun begins to descend, the index returns to a safer 1 by 4:00 PM and tapers off to 0 after 6:00 PM. This hourly trend underscores the importance of sun protection during the midday hours when the 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	3	moderate	30 min
09:00	6	high	25 min
10:00	9	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	6	high	25 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 Uirauna

The UV Index remains consistently high throughout the year, with values peaking at 15 in March and hovering around 14 in several months including January, February, April, September, November, and December. This indicates an extreme exposure category for all months, meaning that individuals have a mere 10-minute burn time before risking skin damage. March emerges as a particularly high-risk month for UV exposure, while January, February, April, and September are also critical months to monitor. Residents and visitors are strongly advised to take protective measures year-round, including wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize harmful effects from UV radiation.

Monthly Maximum UV Index for Uirauna, Brazil

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

The table above highlights how UV exposure in Uirauna 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.

Uirauna'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
Uirauna	14	14	15	14	12	11	11	12	14	13	14	14