UV Index in Porto Franco, Brazil

Last updated: May 3, 2025

Understanding the UV Index is crucial for residents and visitors of Porto Franco, Brazil, as it plays a vital role in protecting skin health and preventing sunburn. With a tropical climate characterized by intense sunlight, Porto Franco often experiences high UV levels, particularly between late morning and early afternoon. On certain days, the UV Index can peak at a striking 12, indicating a very high risk for harm from unprotected sun exposure. By being aware of the daily UV levels, you can take proactive measures to safeguard your skin and enjoy the sun safely throughout the year.

Hourly UV Index in Porto Franco

The UV Index paints a vivid picture of the sun’s intensity throughout the day. Starting low at 07:00 with a mere 1, the index quickly rises, reaching 2 by 08:00. By 09:00, it escalates to 5, signaling stronger rays ahead. The real peak hits at 12:00, where it skyrockets to a blistering 12—a critical warning for sun exposure. This high intensity remains nearly unchanged until 13:00 with 11 before gradually tapering off. By 15:00, it dips to 5, and as the sun begins its descent, the index drops sharply to 1 by 17:00. Finally, the day concludes with no threat at 18:00 and 19:00, showing that the evening brings a welcome respite from the sun’s fierce grip. Stay protected during those 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	5	moderate	30 min
10:00	9	very high	15 min
11:00	11	extreme	10 min
12:00	12	extreme	10 min
13:00	11	extreme	10 min
14:00	9	very high	15 min
15:00	5	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 Franco

The UV Index remains consistently extreme throughout the year, with values peaking at 15 from January to April, and generally high readings of 11 to 14 during the remaining months. Notably, the high-risk months for UV exposure are January through April, where the burn time is only 10 minutes. Residents and visitors are strongly advised to take precautionary measures, such as wearing sunscreen, protective clothing, and sunglasses during outdoor activities, regardless of the month. Consistent vigilance is essential to minimize the risk of sunburn and long-term skin damage throughout the year.

Monthly Maximum UV Index for Porto Franco, Brazil

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

The table above highlights how UV exposure in Porto Franco 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 Franco'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 Franco	15	15	15	15	12	11	11	12	13	13	14	14