UV Index in Jacarei, Brazil

Last updated: June 2, 2025

In Jacarei, Brazil, understanding the UV Index is crucial for safeguarding your skin and overall health. Knowledge of UV levels helps you prevent sunburn and reduce the risk of long-term skin damage, ensuring that you can enjoy the vibrant Brazilian sun responsibly. With a humid subtropical climate (Cfa), Jacarei experiences varying UV exposure throughout the day, peaking between 11:00 AM and 1:00 PM with values reaching as high as 6. Being aware of these levels empowers residents and visitors alike to take necessary precautions, making every sunny day a safe and enjoyable experience.

Hourly UV Index in Jacarei

As the sun rises, the UV Index begins its ascent, peaking between 11:00 AM and 1:00 PM at a robust 6. Early hours, without much intensity, see UV levels of 1 at 7:00 AM and 8:00 AM. By 9:00 AM, activity picks up, reaching 3, and continues to climb until it hits 4 by 10:00 AM. The midday sun really asserts its presence, maintaining a strong 6 from 11:00 AM to 1:00 PM, which is a critical time for sun safety awareness. As the afternoon progresses, the index gradually declines, falling to 2 by 3:00 PM, and later diminishing to a mere 0 by 6:00 PM and 7:00 PM. It's a day of notable UV fluctuation, highlighting the importance of protection during the 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	1	low	45 min
09:00	3	moderate	30 min
10:00	4	moderate	30 min
11:00	6	high	25 min
12:00	6	high	25 min
13:00	6	high	25 min
14:00	4	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 Jacarei

The UV Index demonstrates significant seasonal changes, with the highest levels occurring from January to April and during September to November. The most critical high-risk months for UV exposure, characterized by an extreme category rating (UV Index 16-14), are January, February, March, April, September, October, November, and December, where the recommended burn time is just 10 minutes. In contrast, May and August see very high UV levels with longer burn times of 15 minutes, while June and July lower the index to high levels, allowing for a burn time of 25 minutes. To ensure safety, both visitors and residents are advised to use sun protection diligently during these high-risk months and limit sun exposure, particularly during peak hours.

Monthly Maximum UV Index for Jacarei, Brazil

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

The table above highlights how UV exposure in Jacarei 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.

Jacarei'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
Jacarei	16	16	13	11	8	6	7	9	12	13	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