UV Index in Porto Walter, Brazil

Last updated: June 2, 2025

In Porto Walter, Brazil, staying informed about the UV Index is crucial for protecting your skin from harmful sun exposure. Understanding the UV levels throughout the day helps you prevent sunburn and promotes long-term skin health, especially in a region known for its warm tropical climate. With peak UV levels reaching a striking 11 around noon, residents and visitors alike should be vigilant about sun safety to mitigate the risks associated with excessive exposure. Whether you're enjoying the outdoors or simply running errands, awareness of the UV Index can make all the difference in maintaining a healthy lifestyle under the Brazilian sun.

Hourly UV Index in Porto Walter

As the sun rises, the UV Index starts off low at 1 at 7:00 AM, slowly increasing to 3 by 8:00 AM. By 9:00 AM, it reaches 5, suggesting that the rays are becoming more intense. The peak arrives at 12:00 PM, where a high of 11 is recorded, indicating a very high risk of harm from unprotected sun exposure. The afternoon still holds lingering rays, with values descending gradually from 9 at 1:00 PM to 4 by 3:00 PM. As the sun begins to set, the index drops sharply to 2 at 4:00 PM, and ultimately to 0 after 6:00 PM. Remember, during the peak hours, especially between 10:00 AM and 2:00 PM, protecting your skin is essential!

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	10	very high	15 min
12:00	11	extreme	10 min
13:00	9	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 Porto Walter

Throughout the year, UV Index values remain consistently high, with extreme exposure categories observed from January to December. Notably, the high-risk months include January through April, during which the UV Index peaks at 16, indicating a burn time of just 10 minutes. Even in the summer months of June and July, the UV Index remains elevated at 11 to 12, requiring caution for sun exposure. To protect yourself and enjoy outdoor activities safely, it is essential for both visitors and residents to apply broad-spectrum sunscreen, wear protective clothing, and seek shade during these peak months, particularly from January to April and into September, when the UV Index is also notably high.

Monthly Maximum UV Index for Porto Walter, Brazil

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

The table above highlights how UV exposure in Porto Walter 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.

Porto Walter'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
Porto Walter	15	16	16	15	12	11	11	12	13	15	15	14