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September weather forecast in Dublin

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

	756 mmHg		80%
	4.69 m/s		+16

31 August, Sunday. day, 17°; night, 11°; partly cloudy

1 September, mon

	756 mmHg		81%
	4.8 m/s		+17

1 September, Monday. day, 18°; night, 11°; overcast

2 September, tue

	755 mmHg		83%
	4.69 m/s		+16

2 September, Tuesday. day, 18°; night, 12°; rain

3 September, wed

	754 mmHg		82%
	5.2 m/s		+17

3 September, Wednesday. day, 18°; night, 11°; partly cloudy

4 September, thu

	755 mmHg		82%
	5 m/s		+17

4 September, Thursday. day, 18°; night, 12°; partly cloudy

5 September, fri

	755 mmHg		82%
	5.4 m/s		+16

5 September, Friday. day, 18°; night, 12°; rain

6 September, sat

	754 mmHg		81%
	5.5 m/s		+16

6 September, Saturday. day, 18°; night, 12°; overcast

7 September, sun

	753 mmHg		83%
	5.4 m/s		+16

7 September, Sunday. day, 17°; night, 12°; overcast

8 September, mon

	753 mmHg		82%
	5.1 m/s		+16

8 September, Monday. day, 18°; night, 11°; rain

9 September, tue

	753 mmHg		82%
	5.3 m/s		+16

9 September, Tuesday. day, 17°; night, 11°; rain

10 September, wed

	753 mmHg		84%
	5.2 m/s		+16

10 September, Wednesday. day, 17°; night, 11°; rain

11 September, thu

	752 mmHg		83%
	5.7 m/s		+16

11 September, Thursday. day, 17°; night, 11°; rain

12 September, fri

	753 mmHg		82%
	5.7 m/s		+15

12 September, Friday. day, 16°; night, 10°; partly cloudy

13 September, sat

	754 mmHg		81%
	5.8 m/s		+15

13 September, Saturday. day, 17°; night, 10°; clear

14 September, sun

	755 mmHg		81%
	5.4 m/s		+15

14 September, Sunday. day, 17°; night, 10°; overcast

15 September, mon

	755 mmHg		83%
	5.2 m/s		+15

15 September, Monday. day, 16°; night, 10°; partly cloudy

16 September, tue

	754 mmHg		82%
	5.5 m/s		+15

16 September, Tuesday. day, 16°; night, 10°; partly cloudy

17 September, wed

	754 mmHg		82%
	4.69 m/s		+15

17 September, Wednesday. day, 16°; night, 9°; clear

18 September, thu

	754 mmHg		81%
	5.4 m/s		+15

18 September, Thursday. day, 16°; night, 10°; clear

19 September, fri

	754 mmHg		83%
	5.3 m/s		+15

19 September, Friday. day, 16°; night, 10°; partly cloudy

20 September, sat

	754 mmHg		83%
	5 m/s		+16

20 September, Saturday. day, 16°; night, 10°; partly cloudy

21 September, sun

	753 mmHg		82%
	5.5 m/s		+16

21 September, Sunday. day, 17°; night, 10°; rain

22 September, mon

	754 mmHg		83%
	5.5 m/s		+15

22 September, Monday. day, 16°; night, 10°; partly cloudy

23 September, tue

	753 mmHg		83%
	5.8 m/s		+15

23 September, Tuesday. day, 16°; night, 9°; rain

24 September, wed

	752 mmHg		83%
	5.5 m/s		+15

24 September, Wednesday. day, 15°; night, 9°; rain

25 September, thu

	753 mmHg		84%
	5.3 m/s		+15

25 September, Thursday. day, 15°; night, 9°; overcast

26 September, fri

	753 mmHg		83%
	5.6 m/s		+16

26 September, Friday. day, 15°; night, 10°; rain

27 September, sat

	753 mmHg		82%
	5.6 m/s		+16

27 September, Saturday. day, 15°; night, 9°; overcast

28 September, sun

	753 mmHg		82%
	5.6 m/s		+16

28 September, Sunday. day, 16°; night, 10°; overcast

29 September, mon

	752 mmHg		83%
	5.4 m/s		+15

29 September, Monday. day, 16°; night, 10°; rain

30 September, tue

	750 mmHg		87%
	6.1 m/s		+15

30 September, Tuesday. day, 15°; night, 10°; rain

1 October, wed

	749 mmHg		83%
	6.2 m/s		+15

1 October, Wednesday. day, 14°; night, 9°; clear

2 October, thu

	751 mmHg		82%
	5.8 m/s		+14

2 October, Thursday. day, 14°; night, 9°; partly cloudy

3 October, fri

	751 mmHg		82%
	6.3 m/s		+14

3 October, Friday. day, 14°; night, 9°; overcast

4 October, sat

	751 mmHg		83%
	6.5 m/s		+15

4 October, Saturday. day, 14°; night, 9°; rain

Average data for 10 years

Dublin September

3

sunny days

12

days with precipitation

13

cloudy days

3 sunny days; 12 days with precipitation; 13 cloudy days;

82

%

air humidity

3.9

m/s

WindSW

69

mm of precipitation

(9% of annual average)

+16

°C

Water temperature

air humidity 82%; 69 millimeters of precipitation (9% of annual average); Wind south-westerly 3.9 Meters per second; Water temperature +16°

Weather graphs for September

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

SW

SW

SW

SW

SW

SW

S

SW

SW

SW

SW

SW

SW

SW

SW

SW

S

S

S

S

S

S

S

S

SW

S

SW

SW

S

S

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

Liverpool
Carrickfinn
Glasgow
Cork
Galway
Wicklow
Plymouth
Looe
Belfast

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Oslo
Yurmala
Palanga
Buenos Aires
Copenhagen

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

In September, the weather in Dublin is typically warm. Average daily high temperature in September is about 17 degrees above zero. On average, Dublin has 12 rainy, 8 partly cloudy, 7 cloudy, and 3 sunny days in September. The rains are usually moderate.

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