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September weather forecast in Sines

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

	762 mmHg		87%
	7.3 m/s		+20

31 August, Sunday. day, 20°; night, 18°; partly cloudy

1 September, mon

	762 mmHg		87%
	7.4 m/s		+20

1 September, Monday. day, 19°; night, 18°; clear

2 September, tue

	762 mmHg		87%
	6.8 m/s		+20

2 September, Tuesday. day, 19°; night, 18°; clear

3 September, wed

	762 mmHg		87%
	6.6 m/s		+20

3 September, Wednesday. day, 19°; night, 18°; clear

4 September, thu

	762 mmHg		87%
	6.9 m/s		+20

4 September, Thursday. day, 19°; night, 18°; clear

5 September, fri

	763 mmHg		88%
	7 m/s		+20

5 September, Friday. day, 19°; night, 18°; clear

6 September, sat

	762 mmHg		88%
	6.6 m/s		+20

6 September, Saturday. day, 20°; night, 18°; clear

7 September, sun

	762 mmHg		88%
	6.9 m/s		+20

7 September, Sunday. day, 20°; night, 18°; clear

8 September, mon

	762 mmHg		87%
	6.8 m/s		+20

8 September, Monday. day, 20°; night, 18°; clear

9 September, tue

	763 mmHg		89%
	6.9 m/s		+20

9 September, Tuesday. day, 19°; night, 18°; clear

10 September, wed

	763 mmHg		87%
	7.2 m/s		+20

10 September, Wednesday. day, 19°; night, 18°; clear

11 September, thu

	762 mmHg		86%
	7.2 m/s		+20

11 September, Thursday. day, 20°; night, 18°; clear

12 September, fri

	762 mmHg		85%
	7.8 m/s		+20

12 September, Friday. day, 20°; night, 18°; partly cloudy

13 September, sat

	762 mmHg		84%
	7.6 m/s		+20

13 September, Saturday. day, 20°; night, 18°; partly cloudy

14 September, sun

	762 mmHg		85%
	7.2 m/s		+20

14 September, Sunday. day, 20°; night, 18°; clear

15 September, mon

	762 mmHg		85%
	7.4 m/s		+20

15 September, Monday. day, 20°; night, 18°; clear

16 September, tue

	761 mmHg		87%
	7.3 m/s		+20

16 September, Tuesday. day, 19°; night, 18°; rain

17 September, wed

	761 mmHg		86%
	7.3 m/s		+20

17 September, Wednesday. day, 19°; night, 18°; clear

18 September, thu

	762 mmHg		85%
	7.7 m/s		+20

18 September, Thursday. day, 19°; night, 18°; clear

19 September, fri

	762 mmHg		85%
	7.1 m/s		+20

19 September, Friday. day, 19°; night, 18°; clear

20 September, sat

	762 mmHg		86%
	6.5 m/s		+20

20 September, Saturday. day, 19°; night, 18°; clear

21 September, sun

	762 mmHg		86%
	7.3 m/s		+20

21 September, Sunday. day, 19°; night, 18°; rain

22 September, mon

	762 mmHg		85%
	6.8 m/s		+20

22 September, Monday. day, 19°; night, 18°; clear

23 September, tue

	762 mmHg		86%
	6.9 m/s		+20

23 September, Tuesday. day, 19°; night, 18°; partly cloudy

24 September, wed

	763 mmHg		85%
	7.1 m/s		+20

24 September, Wednesday. day, 19°; night, 18°; overcast

25 September, thu

	763 mmHg		85%
	7.5 m/s		+20

25 September, Thursday. day, 19°; night, 18°; partly cloudy

26 September, fri

	763 mmHg		84%
	7 m/s		+20

26 September, Friday. day, 19°; night, 18°; clear

27 September, sat

	763 mmHg		85%
	6.9 m/s		+20

27 September, Saturday. day, 19°; night, 18°; partly cloudy

28 September, sun

	763 mmHg		85%
	7.3 m/s		+20

28 September, Sunday. day, 19°; night, 18°; partly cloudy

29 September, mon

	763 mmHg		85%
	7.4 m/s		+20

29 September, Monday. day, 20°; night, 18°; rain

30 September, tue

	763 mmHg		85%
	7.1 m/s		+20

30 September, Tuesday. day, 19°; night, 18°; rain

1 October, wed

	763 mmHg		85%
	7 m/s		+20

1 October, Wednesday. day, 19°; night, 18°; clear

2 October, thu

	763 mmHg		84%
	7 m/s		+20

2 October, Thursday. day, 20°; night, 18°; clear

3 October, fri

	764 mmHg		83%
	7.3 m/s		+20

3 October, Friday. day, 19°; night, 18°; clear

4 October, sat

	764 mmHg		84%
	6.9 m/s		+20

4 October, Saturday. day, 19°; night, 17°; clear

Average data for 10 years

Sines September

19

sunny days

4

days with precipitation

1

cloudy day

19 sunny days; 4 days with precipitation; 1 cloudy day;

86

%

air humidity

4.9

m/s

WindW

28

mm of precipitation

(5% of annual average)

+20

°C

Water temperature

air humidity 86%; 28 millimeters of precipitation (5% of annual average); Wind westerly 4.9 Meters per second; Water temperature +20°

Weather graphs for September

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

W

W

SW

W

W

W

W

W

W

W

W

W

SW

W

W

SW

W

W

SW

SW

SW

SW

W

W

SW

SW

SW

SW

SW

SW

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

Daytime temperature

Night-time temperature

Cities near you

Lisbon
Porto
Seville
Tangier
Cadiz
Cascais
Faro
Setúbal
Felgueiras

Cities with similar weather in September

Istanbul
Nice
Porto
Marbella
Cannes
Monaco
Port Louis
Tarragona
Fuerteventura

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

In September, the weather in Sines is typically warm. Average daily high temperature in September is about 19 degrees above zero. On average, Sines has 19 sunny, 6 partly cloudy, 4 rainy, and 1 cloudy day in September. The rains are usually light.

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