December weather forecast and climate
Porto Alegre, Brazil

What is the temperature in December in Porto Alegre?

The average high-temperature, in December, in Porto Alegre, Brazil, is 29°C (84.2°F), while the average low-temperature is 18.9°C (66°F).

How much does it rain in Porto Alegre in December?

In Porto Alegre, during December, the rain falls for 7 days and regularly aggregates up to 93.4mm (3.7") of precipitation.

What is the sea temperature in December in Porto Alegre?

In Porto Alegre, Brazil, in December, the average water temperature is 22.7°C (72.9°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 22.7°C (72.9°F).
Average temperature in December - Porto Alegre, Brazil
  • Average high temperature in December: 29°C

The warmest month (with the highest average high temperature) is January (30.2°C).
The month with the lowest average high temperature is June (19.4°C).

  • Average low temperature in December: 18.9°C

The month with the highest average low temperature is February (20.8°C).
Coldest months (with the lowest average low temperature) are June and July (10.7°C).

Average humidity in December - Porto Alegre, Brazil
  • Average humidity in December: 69%

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is December (69%).

Average rainfall in December - Porto Alegre, Brazil
  • Average rainfall in December: 93.4mm

The wettest month (with the highest rainfall) is September (142.2mm).
The driest month (with the lowest rainfall) is April (77.3mm).

Average rainfall days in December - Porto Alegre, Brazil
  • Average rainfall days in December: 7 days

The month with the highest number of rainy days is September (10 days).
Months with the lowest number of rainy days are April and December (7 days).

Average sea temperature in December - Porto Alegre, Brazil
  • Average sea temperature in December: 22.7°C

The best month for swimming (with the highest average sea temperature) is January (24.7°C).
The coldest month (with the lowest average sea temperature) is August (15.8°C).

Average daylight in December / Average sunshine in December - Porto Alegre, Brazil
  • Average daylight in December: 14.1h

The month with the longest days is December (Average daylight: 14.1h).
The month with shortest days is June (Average daylight: 10.2h).

  • Average sunshine in December: 7.9h

The month with most sunshine is December (Average sunshine: 7.9h).
The month with least sunshine is June (Average sunshine: 4.5h).

Average UV index in December - Porto Alegre, Brazil
  • Average UV index in December: 12

Months with the highest UV index are January, February, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).

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