Niterói Weather in December

During December, Niterói experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 23°C (73°F). December sits within the rainy season, so expect regular and often heavy rainfall.

Rainfall in Niterói in December

Niterói is in the rainy season in December, with rain on around 21 days and an average of 189 mm (7.4 in). The rainy season here brings regular, substantial showers. It's worth being prepared for rain on most days you're out.

Temperature in Niterói in December

In December, Niterói sees very high temperatures, with highs of 31°C (88°F). Nights drop to around 23°C (73°F). Sunshine and humidity can make it feel even warmer than the raw temperature suggests. Nights are warm at 23°C (73°F). It's worth making sure your accommodation has decent ventilation or air conditioning.

Sunshine in Niterói in December

The city usually sees around 182 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

Wind Speed in Niterói in December

Wind speeds average 3 m/s (6 knots) during December. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Average water temperature in December

At 24°C (75°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

December in Niterói has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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For a detailed overview over the year and the best time to visit Brazil, check out our Niterói's climate page.

Niterói Temperature in December

Min Temperature 23°C (73°F)  

Max Temperature 31°C (88°F)  

Water Temperature 24°C (75°F) *  

Chance of Rain 70%  

Precipitation 189 mm (7.4 in)  

Rainy days 21 days  

Humidity 80% *  

Windspeed 3 m/s (6 knots) *  

Sunshine 182 hours *  

Percentage Sunshine *  

* Data from: Rio de Janeiro, Brazil (8 KM, 5 Miles).

What to Wear in Niterói in December

Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. With water temperatures around 24°C (75°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Niterói in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Brazil, check out our Niterói's climate page.

More climate data for Niterói

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Niterói climate overview or explore weather in Brazil.