Rio de Janeiro Weather in December

Rio de Janeiro in December sees very high temperatures, with highs around 30°C (86°F) and overnight lows of 23°C (73°F). Rainfall is fairly high at around 181 mm (7.1 in) on average, so pack waterproofs just in case.

Rainfall in Rio de Janeiro in December

Historically, the month has about 21 days of rain, averaging 181 mm (7.1 in) in total. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Rio de Janeiro in December

In December, Rio de Janeiro sees very high temperatures, with highs of 30°C (86°F). Nights drop to around 23°C (73°F). Indoor breaks or shaded spots can make the warmer part of the day much more comfortable. With overnight lows of 23°C (73°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Rio de Janeiro in December

You can expect a moderate amount of sunlight, with approximately 182 hours. This means a pleasant mix of sun and overcast.

Wind Speed in Rio de Janeiro in December

Average wind speeds reach 3 m/s (6 knots) in December, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in December

The water is 24°C (75°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

December in Rio de Janeiro 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 Rio de Janeiro's climate page.

Rio de Janeiro Temperature in December

Min Temperature 23°C (73°F)  

Max Temperature 30°C (86°F)  

Water Temperature 24°C (75°F)  

Chance of Rain 70%  

Precipitation 181 mm (7.1 in)  

Rainy days 21 days  

Humidity 80%  

Windspeed 3 m/s (6 knots)  

Sunshine 182 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Rio de Janeiro typically stay consistent throughout December, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).

Average temperatures in December

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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Historical weather for Rio de Janeiro in December

Browse day-by-day weather records for Rio de Janeiro spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Rio de Janeiro historical weather extremes in December

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Rio de Janeiro.

• The hottest December day on record in Rio de Janeiro reached 40°C (104°F) (December 19, 1988).
• Rio de Janeiro experienced its chilliest December day on December 12, 2005, reaching only 22°C (72°F).
• The lowest overnight temperature recorded in December was 17°C (63°F) (December 18, 1976).
• The heaviest December precipitation occurred on December 11, 2013, when 88 mm (3.5 in) of precipitation fell.

What to Wear in Rio de Janeiro in December

Warm but pleasant conditions in Rio de Janeiro in December. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 24°C (75°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Rio de Janeiro 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 Rio de Janeiro's climate page.

More climate data for Rio de Janeiro

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Rio de Janeiro climate overview or explore weather in Brazil.