UV Index in Valenca do Piaui, Brazil

Last updated: July 2, 2025

Understanding the UV Index in Valenca do Piaui, Brazil is essential for safeguarding your skin and overall health. With the region's tropical climate, UV radiation can reach dangerously high levels, especially during midday, making awareness crucial for sunburn prevention and long-term skin well-being. The UV Index fluctuates throughout the day, peaking at an intense 11 between 11:00 AM and 12:00 PM, indicating a very high risk of harm from unprotected sun exposure. By keeping track of these levels, residents and visitors can make informed decisions about sun protection, ensuring that they enjoy the sunny days that Valenca do Piaui has to offer without compromising their skin health.

Hourly UV Index in Valenca do Piaui

The UV Index rises sharply throughout the morning, starting from a modest 1 at 07:00 and making a steady climb to reach its peak of 11 at both 11:00 and 12:00. During this prime time, sun protection is essential to safeguard against harmful rays. As the afternoon progresses, the index begins to decline, dropping to 10 at 13:00 and then tapering off to 4 by 15:00. By late afternoon, the UV Index diminishes significantly, falling to 1 by 17:00 and ultimately reaching 0 at 18:00 and 19:00. This trend emphasizes the importance of planning outdoor activities for early morning or late afternoon to enjoy the sun safely!

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	5	moderate	30 min
10:00	8	very high	15 min
11:00	11	extreme	10 min
12:00	11	extreme	10 min
13:00	10	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 Valenca do Piaui

The UV Index remains consistently high throughout the year, with extreme exposure levels recorded from January to December, peaking in March and April at a UV Index of 15. Notably, the high-risk months for UV exposure are from January to November, where the Index consistently reaches levels that require caution. Visitors and residents are advised to take proactive steps to protect themselves from UV radiation by wearing sunscreen, protective clothing, and sunglasses, especially during the peak hours of sun exposure. With a burn time of just 10 minutes across all months, it is crucial to stay vigilant and minimize exposure to prevent skin damage.

Monthly Maximum UV Index for Valenca do Piaui, Brazil

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

The table above highlights how UV exposure in Valenca do Piaui 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.

Valenca do Piaui'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
Valenca do Piaui	14	14	15	15	12	11	11	12	13	13	14	14