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December Weather in Porto Franco, Brazil

Last updated: August 22, 2025

In Porto Franco, Brazil, the average temperature in December is a warm 27°C (81°F). Expect minimum temperatures around 21°C (71°F) and occasionally soaring to a maximum of 36°C (97°F). You might want to carry an umbrella, as there's an average precipitation of 137 mm (5.4 in) over 21 days. Additionally, the air tends to be quite humid, with an average humidity level of 68%—perfect for those who enjoy a tropical feel!

December Temperature in Porto Franco

In December in Porto Franco, the average temperature is 27°C (81°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 21°C (71°F). This warm weather makes Porto Franco an ideal destination for travelers seeking sunshine and pleasant outdoor activities.

December Weather in Porto Franco: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Porto Franco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Porto Franco, December typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (97°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec797980808181818385848181
Data source: Temperature data for Porto Franco generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Porto Franco

In Porto Franco in December, the precipitation amount is 137 mm (5.4 in) over the course of 21 days.

December Precipitation Trends in Porto Franco

The chart displays monthly precipitation patterns in Porto Franco, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Porto Franco, December typically receives around 137 mm (5.4 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec17025222716750462833133137
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Porto Franco

In Porto Franco in December, humidity is 68%. With an average temperature of 27°C (81°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor activities a bit uncomfortable but great for enjoying the local culture while sampling refreshing drinks and seeking shade.

December Average Humidity in Porto Franco

This chart illustrates the average monthly humidity levels in Porto Franco, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Porto Franco is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%91%92%84%70%43%36%30%29%41%68%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Porto Franco

In Porto Franco in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Porto Franco, you can check here.

Maximum UV Index Levels in Porto Franco for December

The chart shows the monthly maximum UV Index (UVI) for Porto Franco in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Porto Franco typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151515151211111213131414
Data source: Porto Franco December UVI data generated using 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.

How December Weather in Porto Franco Compares to Other Months

Weather in Porto Franco varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Porto Franco, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Porto Franco, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)170 mm (6.7 inches)89%extreme
February Weather26°C (80°F)252 mm (9.9 inches)89%extreme
March Weather26°C (80°F)227 mm (8.9 inches)91%extreme
April Weather27°C (81°F)167 mm (6.6 inches)92%extreme
May Weather27°C (82°F)50 mm (2.0 inches)84%extreme
June Weather27°C (82°F)4 mm (0.1 inches)70%extreme
July Weather27°C (82°F)6 mm (0.2 inches)43%extreme
August Weather28°C (83°F)2 mm (0.1 inches)36%extreme
September Weather29°C (85°F)8 mm (0.3 inches)30%extreme
October Weather29°C (84°F)33 mm (1.3 inches)29%extreme
November Weather27°C (82°F)133 mm (5.2 inches)41%extreme
December Weather27°C (81°F)137 mm (5.4 inches)68%extreme

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