UV Index in Piracaia, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents of Piracaia, Brazil, where the Cfa climate brings warm temperatures and ample sunshine throughout the year. Being aware of UV levels is essential for preventing sunburn and maintaining skin health, especially when the index peaks at 8 around midday. This high exposure risk emphasizes the need to protect your skin during the sunniest hours, as the UV Index can fluctuate significantly from 1 in the early morning to 8 at noon. Stay informed to enjoy the beautiful Brazilian sun while safeguarding your skin!

Hourly UV Index in Piracaia

Experience a dynamic UV Index today as it peaks during the day! Starting with a gentle rise at 8:00 AM hitting a level of 2, the index steadily climbs to a notable 8 by 11:00 AM and 12:00 PM, marking the sun’s strongest rays. After reaching this peak, the intensity begins to wane, dropping to 7 at 1:00 PM, and further declining to 5 by 2:00 PM. As the afternoon fades into evening, the UV Index falls quickly, reaching 1 by 4:00 PM and finally settling at 0 after 6:00 PM. Stay protected and enjoy the sun safely during its peak hours!

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	3	moderate	30 min
10:00	6	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	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 Piracaia

The UV Index shows significant seasonal variation, with the highest readings occurring from January to April, where the index reaches an extreme 16. These months pose a high risk for sunburn, with a critical 10-minute burn time. After April, the index slightly decreases, but remains very high in May (8) and July (8), and high in June (7). As summer transitions into fall, the UV Index fluctuates but remains concerning, especially in September (12) and October (14), both categorized as extreme, again allowing only a short 10-minute exposure without protection. The end of the year is marked by high indices once more, peaking in December at 16. Visitors and residents are strongly advised to take protective measures against UV exposure, particularly during these high-risk months to minimize the risk of sunburn and long-term skin damage.

Monthly Maximum UV Index for Piracaia, Brazil

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

The table above highlights how UV exposure in Piracaia 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.

Piracaia'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
Piracaia	16	16	13	11	8	7	8	10	12	14	15	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