Niterói Weather in December

What's the weather like in Niterói (Rio de Janeiro) in December 2021?

The climate in Niterói during December can be summarized as hot, humid and wet.

December is in the summer in Niterói and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a steamy 29°C (84°F), whilst at night 21°C (70°F) is normal.

Niterói weather averages (imperial / metric)
Daytime temperature 29°C 84.2°F
Nightly temperature 21.2°C 70.2°F
Average temperature 25.1°C 77.2°F
Daily sunshine 5.7 hrs
Avg rainfall 140 mm 5.5 ins
Rainy days 21 days
Sea temperature 24.8°C 76.6°F
Humidity 79%
Windspeed 9.4kph 6 mph

On average December is the 3rd wettest month of the year in Niterói with around 140mm 5.5 inches of rain making it a wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.

On the flip side this corresponds to an average of 5.7 hours of sunshine per day.

December temperatures in Niterói

Niterói average temperature in December

December rainfall

Niterói average rain in December

December hourly sunshine

Niterói average rain in December

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Niterói in December 2021.

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Niterói weather stats

Niterói weather statistics
Hottest month: February 30.8°C 87.4°F
Driest month: July 52mm 2ins
Sunniest month: August 6.5hrs
Coldest month: July 25.1°C 77.2°F
Wettest month: January 146mm 5.7ins
Map showing location of Niterói (-22.88333, -43.10361)

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