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September weather forecast in São Mateus

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

31 August, sun

	759 mmHg		77%
	4.3 m/s		+25

31 August, Sunday. day, 27°; night, 19°; partly cloudy

1 September, mon

	758 mmHg		78%
	4.4 m/s		+25

1 September, Monday. day, 27°; night, 18°; clear

2 September, tue

	758 mmHg		76%
	4.4 m/s		+25

2 September, Tuesday. day, 28°; night, 19°; clear

3 September, wed

	758 mmHg		76%
	4.5 m/s		+26

3 September, Wednesday. day, 28°; night, 19°; clear

4 September, thu

	758 mmHg		77%
	4.9 m/s		+26

4 September, Thursday. day, 28°; night, 19°; clear

5 September, fri

	758 mmHg		76%
	4.8 m/s		+25

5 September, Friday. day, 27°; night, 19°; clear

6 September, sat

	759 mmHg		75%
	4.9 m/s		+25

6 September, Saturday. day, 27°; night, 19°; rain

7 September, sun

	758 mmHg		76%
	4.5 m/s		+25

7 September, Sunday. day, 27°; night, 19°; overcast

8 September, mon

	758 mmHg		75%
	4.6 m/s		+25

8 September, Monday. day, 28°; night, 19°; clear

9 September, tue

	758 mmHg		77%
	4.6 m/s		+25

9 September, Tuesday. day, 28°; night, 19°; clear

10 September, wed

	758 mmHg		76%
	4.69 m/s		+25

10 September, Wednesday. day, 28°; night, 19°; rain

11 September, thu

	758 mmHg		75%
	4.69 m/s		+25

11 September, Thursday. day, 28°; night, 19°; clear

12 September, fri

	758 mmHg		77%
	4.6 m/s		+25

12 September, Friday. day, 27°; night, 19°; rain

13 September, sat

	758 mmHg		76%
	4.6 m/s		+26

13 September, Saturday. day, 28°; night, 20°; rain

14 September, sun

	758 mmHg		76%
	4.6 m/s		+26

14 September, Sunday. day, 28°; night, 20°; rain

15 September, mon

	758 mmHg		77%
	4.9 m/s		+26

15 September, Monday. day, 28°; night, 20°; partly cloudy

16 September, tue

	757 mmHg		77%
	4.6 m/s		+26

16 September, Tuesday. day, 28°; night, 20°; rain

17 September, wed

	758 mmHg		78%
	4.69 m/s		+26

17 September, Wednesday. day, 27°; night, 20°; rain

18 September, thu

	758 mmHg		76%
	4.9 m/s		+25

18 September, Thursday. day, 28°; night, 20°; overcast

19 September, fri

	758 mmHg		75%
	4.8 m/s		+25

19 September, Friday. day, 28°; night, 20°; partly cloudy

20 September, sat

	757 mmHg		75%
	4.69 m/s		+25

20 September, Saturday. day, 28°; night, 19°; clear

21 September, sun

	756 mmHg		75%
	4.9 m/s		+25

21 September, Sunday. day, 29°; night, 20°; partly cloudy

22 September, mon

	757 mmHg		74%
	4.8 m/s		+26

22 September, Monday. day, 28°; night, 20°; partly cloudy

23 September, tue

	757 mmHg		75%
	4.8 m/s		+25

23 September, Tuesday. day, 28°; night, 20°; rain

24 September, wed

	757 mmHg		73%
	4.69 m/s		+25

24 September, Wednesday. day, 28°; night, 20°; partly cloudy

25 September, thu

	757 mmHg		75%
	4.9 m/s		+25

25 September, Thursday. day, 28°; night, 20°; partly cloudy

26 September, fri

	757 mmHg		74%
	5 m/s		+25

26 September, Friday. day, 28°; night, 20°; partly cloudy

27 September, sat

	757 mmHg		75%
	4.8 m/s		+25

27 September, Saturday. day, 28°; night, 20°; rain

28 September, sun

	757 mmHg		75%
	4.9 m/s		+26

28 September, Sunday. day, 29°; night, 20°; rain

29 September, mon

	757 mmHg		76%
	4.8 m/s		+25

29 September, Monday. day, 29°; night, 20°; partly cloudy

30 September, tue

	757 mmHg		76%
	4.8 m/s		+26

30 September, Tuesday. day, 28°; night, 21°; overcast

1 October, wed

	757 mmHg		75%
	4.69 m/s		+26

1 October, Wednesday. day, 28°; night, 20°; partly cloudy

2 October, thu

	756 mmHg		74%
	5 m/s		+26

2 October, Thursday. day, 29°; night, 20°; clear

3 October, fri

	756 mmHg		74%
	5 m/s		+26

3 October, Friday. day, 29°; night, 21°; clear

4 October, sat

	756 mmHg		75%
	4.8 m/s		+26

4 October, Saturday. day, 29°; night, 21°; partly cloudy

Average data for 10 years

São Mateus September

9

sunny days

10

days with precipitation

4

cloudy days

9 sunny days; 10 days with precipitation; 4 cloudy days;

76

%

air humidity

3.2

m/s

WindE

39

mm of precipitation

(4% of annual average)

+25

°C

Water temperature

air humidity 76%; 39 millimeters of precipitation (4% of annual average); Wind easterly 3.2 Meters per second; Water temperature +25°

Weather graphs for September

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

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E

E

E

E

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E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

1

Average data for 10 years

2

3

4

5

6

7

8

9

10

11

12

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30

Daytime temperature

Night-time temperature

Cities near you

Vitória
Eunápolis
Itabuna
Mucuri
Cachoeiro de Itapemirim
Guarapari

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

In September, the weather in São Mateus is typically hot. Average daily high temperature in September is about 28 degrees above zero. On average, São Mateus has 10 rainy, 9 sunny, 8 partly cloudy, and 3 cloudy days in September. The rains are usually light.

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