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December weather forecast in Rio de Janeiro

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30 days Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

30 November, sun

	756 mmHg		80%
	3.3 m/s		+24

30 November, Sunday. day, 28°; night, 21°; overcast

1 December, mon

	757 mmHg		81%
	3.3 m/s		+25

1 December, Monday. day, 28°; night, 21°; rain

2 December, tue

	757 mmHg		81%
	3.4 m/s		+26

2 December, Tuesday. day, 29°; night, 21°; rain

3 December, wed

	756 mmHg		80%
	3.4 m/s		+25

3 December, Wednesday. day, 29°; night, 21°; partly cloudy

4 December, thu

	756 mmHg		80%
	3.5 m/s		+26

4 December, Thursday. day, 29°; night, 21°; rain

5 December, fri

	756 mmHg		80%
	3.2 m/s		+25

5 December, Friday. day, 29°; night, 22°; rain

6 December, sat

	756 mmHg		80%
	3.3 m/s		+25

6 December, Saturday. day, 29°; night, 22°; overcast

7 December, sun

	756 mmHg		81%
	3.1 m/s		+26

7 December, Sunday. day, 28°; night, 22°; rain

8 December, mon

	757 mmHg		82%
	3.2 m/s		+26

8 December, Monday. day, 29°; night, 21°; rain

9 December, tue

	757 mmHg		81%
	3.1 m/s		+26

9 December, Tuesday. day, 29°; night, 21°; partly cloudy

10 December, wed

	757 mmHg		81%
	3.4 m/s		+26

10 December, Wednesday. day, 28°; night, 21°; overcast

11 December, thu

	756 mmHg		81%
	3.2 m/s		+26

11 December, Thursday. day, 29°; night, 21°; overcast

12 December, fri

	756 mmHg		80%
	3.1 m/s		+26

12 December, Friday. day, 29°; night, 22°; rain

13 December, sat

	756 mmHg		81%
	3.2 m/s		+26

13 December, Saturday. day, 29°; night, 22°; rain

14 December, sun

	756 mmHg		82%
	3.1 m/s		+25

14 December, Sunday. day, 29°; night, 22°; rain

15 December, mon

	756 mmHg		80%
	3.2 m/s		+25

15 December, Monday. day, 29°; night, 22°; rain

16 December, tue

	756 mmHg		79%
	3.1 m/s		+26

16 December, Tuesday. day, 30°; night, 22°; clear

17 December, wed

	756 mmHg		79%
	3.4 m/s		+26

17 December, Wednesday. day, 30°; night, 22°; rain

18 December, thu

	757 mmHg		80%
	3.2 m/s		+26

18 December, Thursday. day, 29°; night, 22°; rain

19 December, fri

	757 mmHg		80%
	3.2 m/s		+27

19 December, Friday. day, 29°; night, 22°; rain

20 December, sat

	756 mmHg		78%
	3.2 m/s		+27

20 December, Saturday. day, 31°; night, 22°; clear

21 December, sun

	756 mmHg		79%
	3 m/s		+27

21 December, Sunday. day, 31°; night, 22°; clear

22 December, mon

	756 mmHg		78%
	2.9 m/s		+27

22 December, Monday. day, 31°; night, 23°; rain

23 December, tue

	757 mmHg		81%
	3 m/s		+27

23 December, Tuesday. day, 29°; night, 23°; rain

24 December, wed

	757 mmHg		81%
	3 m/s		+27

24 December, Wednesday. day, 29°; night, 22°; rain

25 December, thu

	757 mmHg		81%
	2.8 m/s		+28

25 December, Thursday. day, 29°; night, 22°; rain

26 December, fri

	757 mmHg		80%
	3.1 m/s		+28

26 December, Friday. day, 30°; night, 22°; rain

27 December, sat

	757 mmHg		79%
	3.1 m/s		+27

27 December, Saturday. day, 30°; night, 22°; rain

28 December, sun

	756 mmHg		79%
	2.9 m/s		+27

28 December, Sunday. day, 30°; night, 23°; rain

29 December, mon

	756 mmHg		79%
	3 m/s		+28

29 December, Monday. day, 31°; night, 23°; rain

30 December, tue

	756 mmHg		80%
	2.9 m/s		+28

30 December, Tuesday. day, 31°; night, 23°; rain

31 December, wed

	756 mmHg		79%
	3 m/s		+28

31 December, Wednesday. day, 31°; night, 23°; rain

1 January, thu

	755 mmHg		80%
	2.9 m/s		+29

1 January, Thursday. day, 30°; night, 23°; rain

2 January, fri

	756 mmHg		81%
	2.6 m/s		+28

2 January, Friday. day, 29°; night, 23°; rain

3 January, sat

	756 mmHg		82%
	3 m/s		+28

3 January, Saturday. day, 29°; night, 23°; rain

Average data for 10 years

Rio de Janeiro December

3

sunny days

23

days with precipitation

14

cloudy days

3 sunny days; 23 days with precipitation; 14 cloudy days;

80

%

air humidity

1.6

m/s

WindS

245

mm of precipitation

(15% of annual average)

+26

°C

Water temperature

air humidity 80%; 245 millimeters of precipitation (15% of annual average); Wind southerly 1.6 Meters per second; Water temperature +26°

Weather graphs for December

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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1

Average data for 10 years

2

3

4

5

6

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10

11

12

13

14

15

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19

20

21

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29

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31

Daytime temperature

Night-time temperature

Cities near you

Sao Paulo
Belo Horizonte
Vitória
Santos
Buzios
Rio das Ostras
Araruama
Itaquaquecetuba
Volta Redonda

Cities with similar weather in December

Phuket
Pattaya
Bangkok
Samui
Phú Quốc
Krabi
Victoria
Ko Chang
Galle

The weather forecast for December 2025 is based on historical data from the past 10 years.

December in Rio de Janeiro is the rainiest month of the year. In December, the weather in Rio de Janeiro is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, Rio de Janeiro has 23 rainy, 3 sunny, 3 cloudy, and 2 partly cloudy days in December. The rains are usually heavy. December as well as January, February, March, and November is considered the most uncomfortable time to visit Rio de Janeiro.

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