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December weather forecast in São Luís

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

	755 mmHg		78%
	6.2 m/s		+30

30 November, Sunday. day, 29°; night, 26°; rain

1 December, mon

	755 mmHg		78%
	6.1 m/s		+31

1 December, Monday. day, 29°; night, 26°; clear

2 December, tue

	755 mmHg		78%
	6.2 m/s		+31

2 December, Tuesday. day, 29°; night, 26°; clear

3 December, wed

	755 mmHg		78%
	6.1 m/s		+30

3 December, Wednesday. day, 29°; night, 26°; partly cloudy

4 December, thu

	755 mmHg		79%
	6 m/s		+30

4 December, Thursday. day, 29°; night, 26°; partly cloudy

5 December, fri

	755 mmHg		78%
	5.8 m/s		+30

5 December, Friday. day, 29°; night, 26°; partly cloudy

6 December, sat

	755 mmHg		78%
	6 m/s		+30

6 December, Saturday. day, 29°; night, 26°; clear

7 December, sun

	755 mmHg		78%
	6 m/s		+30

7 December, Sunday. day, 29°; night, 26°; clear

8 December, mon

	755 mmHg		79%
	6 m/s		+30

8 December, Monday. day, 29°; night, 26°; clear

9 December, tue

	756 mmHg		78%
	5.8 m/s		+30

9 December, Tuesday. day, 29°; night, 26°; clear

10 December, wed

	756 mmHg		78%
	6.1 m/s		+30

10 December, Wednesday. day, 29°; night, 26°; partly cloudy

11 December, thu

	755 mmHg		78%
	6.1 m/s		+30

11 December, Thursday. day, 29°; night, 26°; partly cloudy

12 December, fri

	755 mmHg		78%
	6 m/s		+30

12 December, Friday. day, 29°; night, 26°; partly cloudy

13 December, sat

	755 mmHg		79%
	5.9 m/s		+30

13 December, Saturday. day, 29°; night, 26°; rain

14 December, sun

	755 mmHg		79%
	6.1 m/s		+30

14 December, Sunday. day, 29°; night, 26°; rain

15 December, mon

	755 mmHg		79%
	6 m/s		+30

15 December, Monday. day, 29°; night, 26°; rain

16 December, tue

	755 mmHg		79%
	6.2 m/s		+30

16 December, Tuesday. day, 29°; night, 26°; rain

17 December, wed

	755 mmHg		79%
	6.1 m/s		+30

17 December, Wednesday. day, 29°; night, 25°; rain

18 December, thu

	755 mmHg		80%
	5.9 m/s		+30

18 December, Thursday. day, 29°; night, 26°; rain

19 December, fri

	755 mmHg		79%
	6.1 m/s		+30

19 December, Friday. day, 29°; night, 26°; rain

20 December, sat

	755 mmHg		79%
	6.1 m/s		+30

20 December, Saturday. day, 29°; night, 26°; rain

21 December, sun

	756 mmHg		80%
	6 m/s		+30

21 December, Sunday. day, 29°; night, 25°; rain

22 December, mon

	756 mmHg		79%
	5.9 m/s		+30

22 December, Monday. day, 29°; night, 26°; rain

23 December, tue

	756 mmHg		80%
	5.9 m/s		+30

23 December, Tuesday. day, 29°; night, 25°; rain

24 December, wed

	756 mmHg		80%
	6 m/s		+30

24 December, Wednesday. day, 29°; night, 25°; rain

25 December, thu

	756 mmHg		80%
	5.7 m/s		+30

25 December, Thursday. day, 29°; night, 26°; rain

26 December, fri

	756 mmHg		80%
	5.8 m/s		+30

26 December, Friday. day, 29°; night, 26°; rain

27 December, sat

	756 mmHg		80%
	5.9 m/s		+30

27 December, Saturday. day, 29°; night, 26°; rain

28 December, sun

	756 mmHg		81%
	5.7 m/s		+30

28 December, Sunday. day, 29°; night, 26°; rain

29 December, mon

	756 mmHg		81%
	5.6 m/s		+30

29 December, Monday. day, 29°; night, 25°; rain

30 December, tue

	756 mmHg		80%
	5.5 m/s		+30

30 December, Tuesday. day, 29°; night, 25°; rain

31 December, wed

	756 mmHg		81%
	5.5 m/s		+30

31 December, Wednesday. day, 29°; night, 25°; rain

1 January, thu

	756 mmHg		81%
	5.3 m/s		+30

1 January, Thursday. day, 28°; night, 25°; rain

2 January, fri

	756 mmHg		81%
	5.4 m/s		+29

2 January, Friday. day, 29°; night, 25°; rain

3 January, sat

	756 mmHg		81%
	5.5 m/s		+29

3 January, Saturday. day, 29°; night, 25°; clear

Average data for 10 years

São Luís December

6

sunny days

19

days with precipitation

8

cloudy days

6 sunny days; 19 days with precipitation; 8 cloudy days;

79

%

air humidity

4.9

m/s

WindNE

85

mm of precipitation

(4% of annual average)

+30

°C

Water temperature

air humidity 79%; 85 millimeters of precipitation (4% of annual average); Wind north-easterly 4.9 Meters per second; Water temperature +30°

Weather graphs for December

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

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

NE

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Daytime temperature

Night-time temperature

Cities near you

Santa Luzia
Teresina
Castanhal
Bonito
Caxias
Codó
Paragominas
Jijoca de Jericoacoara

Cities with similar weather in December

Phuket
Pattaya
Bangkok
Male
Samui
Singapore
Colombo
Phú Quốc
Krabi

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

In December, the weather in São Luís is typically hot. Average daily high temperature in December is about 29 degrees above zero. On average, São Luís has 19 rainy, 6 sunny, and 6 partly cloudy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit São Luís.

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