UV Index in Cotia, Brazil

Last updated: June 2, 2025

Understanding the UV Index is crucial for residents of Cotia, Brazil, where the combination of a temperate Cfa climate and varying UV levels can impact your skin health. With peak UV exposure occurring around midday, it's essential to be aware of these levels to prevent sunburn and reduce the risk of long-term skin damage. During the warmer months, UV readings can reach as high as 6, particularly between 10 AM and 2 PM, emphasizing the need for proper sunscreen usage and protective clothing. Stay informed about the UV Index to enjoy the sun safely while protecting your skin!

Hourly UV Index in Cotia

The UV Index throughout the day presents an interesting fluctuation, starting off quite low with a maximum of 1 at both 07:00 and 08:00. As the sun rises higher, the intensity increases sharply, peaking at 6 from 11:00 to 13:00. This is the critical time to protect your skin, as a UV Index of 6 indicates a moderate risk of harm from unprotected sun exposure. The afternoon sees a gradual decline, with numbers dropping back to 2 by 15:00 and returning to 1 by 16:00 and 17:00. Finally, as the day comes to a close, the UV Index falls to 0 by 18:00 and remains there through the evening, reminding us that while the sun's rays can be strong during the day, they also retreat as the sun sets.

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	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 Cotia

The UV Index experiences significant seasonal changes, peaking in the winter and late fall months, with extreme levels recorded from January through April and again in September to November. This means January, February, March, April, September, October, and November are considered high-risk months for sun exposure, with a burn time of only 10 minutes in these extreme conditions. In contrast, during the summer months of June and July, the UV levels drop to high, allowing for a slightly longer burn time of 25 minutes, while May and August remain at very high, with 15 minutes before potential damage occurs. Visitors and residents are advised to take precautions, such as wearing sunscreen, protective clothing, and seeking shade, especially during the peak months to minimize the risk of skin damage and ensure safe outdoor activities.

Monthly Maximum UV Index for Cotia, Brazil

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

The table above highlights how UV exposure in Cotia 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.

Cotia'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
Cotia	16	15	13	11	8	6	7	9	11	13	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