UV Index in Porto Franco, Brazil

Last updated: July 2, 2025

In Porto Franco, Brazil, staying informed about the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels not only helps in preventing sunburn but also plays a significant role in reducing the risk of long-term skin damage. With a tropical climate characterized by high exposure to the sun, Porto Franco's UV readings can soar to 11 at midday, indicating an elevated risk for sun-related harm. By being aware of these UV fluctuations throughout the day, residents and visitors can make informed decisions about sun protection, ensuring a safer and more enjoyable experience while soaking up the vibrant Brazilian sun.

Hourly UV Index in Porto Franco

The UV Index throughout the day showcases a dramatic rise as the sun reaches its peak. Starting at a modest 1 at 7:00 AM, it climbs steadily, hitting 4 by 9:00 AM, and then surging to 11 by noon—the highest level of the day. This intense peak at 12:00 PM signals a critical time for sun safety, with values remaining elevated at 10 until 1:00 PM. As the afternoon progresses, the index gradually declines to 5 by 3:00 PM, and then drops further, reaching a low of 0 by 7:00 PM. It's clear that during the midday hours, especially between 10 AM and 2 PM, extra precautions are essential to protect against harmful UV exposure.

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.
TimeUVICategoryTime to Burn
07:001low45 min
08:002low45 min
09:004moderate30 min
10:007high25 min
11:0010very high15 min
12:0011extreme10 min
13:0010very high15 min
14:008very high15 min
15:005moderate30 min
16:003moderate30 min
17:001low45 min
18:001low45 min
19:000low45 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.
JanFebMarAprMayJunJulAugSepOctNovDec151515151211111213131414
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.
 JanFebMarAprMayJunJulAugSepOctNovDec
Rio de Janeiro UVI15141310767911121315
Sao Paulo UVI16151211867911131415
Belo Horizonte UVI171614129781012131416
Salvador UVI1414141310991212151514
Fortaleza UVI141415151311111213131313
Porto Franco151515151211111213131414