UV Index in Porto Walter, Brazil

Last updated: May 3, 2025

Understanding the UV Index is essential for residents and visitors of Porto Walter, Brazil, as it serves as a vital indicator of sun exposure and its potential impact on skin health. With a tropical climate and UV levels soaring as high as 12 during midday, being aware of these levels can help prevent sunburn and long-term skin damage. Recognizing when UV radiation is at its peak allows you to take proactive measures to protect yourself and enjoy the beautiful outdoors safely. Stay informed and safeguard your skin as you immerse yourself in the vibrant landscapes of Porto Walter!

Hourly UV Index in Porto Walter

At sunrise, the UV Index starts at a mild 1 at 7:00 AM, offering a gentle welcome to the day. As the sun climbs higher, the intensity increases, reaching a moderate 3 by 8:00 AM. By 9:00 AM, it escalates to a strong 6, signaling the need for sun protection. The peak arrives at 11:00 AM and 12:00 PM, where the UV Index hits a staggering 12, indicating extreme levels of UV radiation. As the afternoon progresses, the intensity gradually declines, dropping to 8 at 2:00 PM and continuing to diminish through the late afternoon—4 at 3:00 PM, 2 at 4:00 PM, and finally returning to a safe 1 by 5:00 PM. The day winds down with no UV concern after 6:00 PM as the index falls to 0, allowing for a worry-free evening under the twilight sky.

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	6	high	25 min
10:00	10	very high	15 min
11:00	12	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	8	very high	15 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