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September weather forecast in Casteldefels

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

	732 mmHg		78%
	3.7 m/s		+26

31 August, Sunday. day, 26°; night, 17°; rain

1 September, mon

	732 mmHg		78%
	4.1 m/s		+26

1 September, Monday. day, 26°; night, 17°; rain

2 September, tue

	732 mmHg		79%
	4.1 m/s		+26

2 September, Tuesday. day, 25°; night, 17°; rain

3 September, wed

	732 mmHg		78%
	4.1 m/s		+26

3 September, Wednesday. day, 25°; night, 17°; partly cloudy

4 September, thu

	732 mmHg		77%
	4 m/s		+26

4 September, Thursday. day, 26°; night, 17°; rain

5 September, fri

	732 mmHg		77%
	4 m/s		+26

5 September, Friday. day, 26°; night, 17°; partly cloudy

6 September, sat

	732 mmHg		77%
	4.19 m/s		+26

6 September, Saturday. day, 26°; night, 17°; clear

7 September, sun

	731 mmHg		79%
	4.1 m/s		+25

7 September, Sunday. day, 25°; night, 17°; rain

8 September, mon

	732 mmHg		76%
	4 m/s		+26

8 September, Monday. day, 25°; night, 16°; clear

9 September, tue

	732 mmHg		76%
	4 m/s		+26

9 September, Tuesday. day, 25°; night, 16°; clear

10 September, wed

	732 mmHg		77%
	3.8 m/s		+26

10 September, Wednesday. day, 25°; night, 16°; clear

11 September, thu

	732 mmHg		77%
	3.9 m/s		+26

11 September, Thursday. day, 25°; night, 16°; partly cloudy

12 September, fri

	732 mmHg		77%
	4 m/s		+25

12 September, Friday. day, 25°; night, 16°; partly cloudy

13 September, sat

	732 mmHg		76%
	4.3 m/s		+25

13 September, Saturday. day, 25°; night, 15°; rain

14 September, sun

	731 mmHg		75%
	4.19 m/s		+25

14 September, Sunday. day, 24°; night, 15°; rain

15 September, mon

	731 mmHg		75%
	3.7 m/s		+25

15 September, Monday. day, 24°; night, 15°; rain

16 September, tue

	731 mmHg		77%
	3.7 m/s		+24

16 September, Tuesday. day, 24°; night, 15°; clear

17 September, wed

	730 mmHg		78%
	4 m/s		+24

17 September, Wednesday. day, 24°; night, 15°; rain

18 September, thu

	731 mmHg		78%
	3.5 m/s		+24

18 September, Thursday. day, 23°; night, 15°; rain

19 September, fri

	731 mmHg		77%
	3.7 m/s		+24

19 September, Friday. day, 23°; night, 14°; clear

20 September, sat

	732 mmHg		79%
	3.7 m/s		+24

20 September, Saturday. day, 23°; night, 14°; rain

21 September, sun

	732 mmHg		80%
	3.6 m/s		+24

21 September, Sunday. day, 23°; night, 14°; overcast

22 September, mon

	732 mmHg		80%
	3.6 m/s		+24

22 September, Monday. day, 23°; night, 15°; rain

23 September, tue

	731 mmHg		80%
	3.6 m/s		+24

23 September, Tuesday. day, 23°; night, 14°; rain

24 September, wed

	731 mmHg		77%
	3.8 m/s		+24

24 September, Wednesday. day, 24°; night, 14°; clear

25 September, thu

	732 mmHg		77%
	3.9 m/s		+23

25 September, Thursday. day, 23°; night, 14°; partly cloudy

26 September, fri

	732 mmHg		75%
	3.8 m/s		+23

26 September, Friday. day, 23°; night, 13°; clear

27 September, sat

	733 mmHg		75%
	3.8 m/s		+23

27 September, Saturday. day, 23°; night, 13°; clear

28 September, sun

	733 mmHg		75%
	3.7 m/s		+23

28 September, Sunday. day, 23°; night, 13°; clear

29 September, mon

	732 mmHg		78%
	3.9 m/s		+23

29 September, Monday. day, 23°; night, 13°; partly cloudy

30 September, tue

	732 mmHg		80%
	3.7 m/s		+23

30 September, Tuesday. day, 23°; night, 14°; partly cloudy

1 October, wed

	732 mmHg		79%
	3.6 m/s		+23

1 October, Wednesday. day, 23°; night, 14°; rain

2 October, thu

	732 mmHg		78%
	3.8 m/s		+23

2 October, Thursday. day, 23°; night, 14°; clear

3 October, fri

	732 mmHg		77%
	4.1 m/s		+23

3 October, Friday. day, 23°; night, 13°; rain

4 October, sat

	732 mmHg		76%
	3.8 m/s		+23

4 October, Saturday. day, 22°; night, 13°; clear

Average data for 10 years

Casteldefels September

10

sunny days

12

days with precipitation

5

cloudy days

10 sunny days; 12 days with precipitation; 5 cloudy days;

77

%

air humidity

2.09

m/s

WindS

97

mm of precipitation

(14% of annual average)

+25

°C

Water temperature

air humidity 77%; 97 millimeters of precipitation (14% of annual average); Wind southerly 2.09 Meters per second; Water temperature +25°

Weather graphs for September

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

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S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

SW

S

S

S

S

SW

SW

SW

SW

S

S

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

Barcelona
Valencia
Alicante
Marseilles
Majorca
Tarragona
Andorra la Vella
Salou
Toulouse

Cities with similar weather in September

Kemer
Rome
Athens
Thessaloniki
Malaga
Alicante
Naples
Bar
Palermo

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

September in Casteldefels is the rainiest month of the year. In September, the weather in Casteldefels is typically warm. Average daily high temperature in September is about 24 degrees above zero. On average, Casteldefels has 12 rainy, 10 sunny, 7 partly cloudy, and 1 cloudy day in September. The rains are usually heavy. September as well as January, February, March, and April is considered the most uncomfortable time to visit Casteldefels.

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