UV Index in Piraju, Brazil

Last updated: July 2, 2025

In Piraju, Brazil, staying informed about the UV Index is crucial for protecting your skin from harmful ultraviolet rays. Understanding UV levels helps prevent sunburn and supports long-term skin health, allowing you to enjoy the vibrant outdoor lifestyle that Piraju offers. With its Cfa climate, characterized by hot summers and mild winters, the UV exposure can be particularly intense during peak hours—especially between 10 AM and 2 PM, when the index can reach as high as 7. By being vigilant about UV levels, residents can make informed decisions to safeguard their skin while enjoying everything this charming town has to offer.

Hourly UV Index in Piraju

The UV Index highlights a dynamic shift in sun exposure throughout the day. Starting off at a modest level of 1 at 07:00 and 08:00, the intensity gradually increases, peaking at 7 from 12:00 to 13:00, indicating high risk for harm from unprotected sun exposure. As the afternoon progresses, the index dips to 5 at 14:00 before gracefully descending to 3 by 15:00. The day winds down with the UV Index returning to its initial levels at 1 by 17:00, and then falling to 0 after 18:00, marking a safe end to sun exposure. It's a clear reminder to plan sun protection strategies, especially during the peak hours when the index reaches its zenith!

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	2	low	45 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	7	high	25 min
13:00	7	high	25 min
14:00	5	moderate	30 min
15:00	3	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 Piraju

The UV Index varies significantly throughout the year, with extreme levels marking the high-risk months of January through April and returning in September to November. During these months, protective measures are crucial, as the burn time is as low as 10 minutes. The UV Index peaks in February and December at 15 and 16, respectively, while it remains at 11 in April. As spring transitions to summer, the Index decreases slightly, with May to July showing very high to high levels and longer burn times of 15 to 25 minutes. Moving into late summer, the Index sees a rise again in August (9) and September (12), emphasizing the need for sustained sun protection. Residents and visitors are advised to stay informed, use sunscreen, wear protective clothing, and seek shade during peak sun hours, especially in the extreme UV months.

Monthly Maximum UV Index for Piraju, Brazil

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

The table above highlights how UV exposure in Piraju 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.

Piraju'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
Piraju	15	15	13	11	8	6	7	9	12	14	14	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