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September weather forecast in Kirkkonummi

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		81%
	5 m/s		+16

31 August, Sunday. day, 17°; night, 10°; overcast

1 September, mon

	757 mmHg		81%
	4.69 m/s		+17

1 September, Monday. day, 17°; night, 9°; clear

2 September, tue

	757 mmHg		82%
	4.9 m/s		+17

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

3 September, wed

	757 mmHg		84%
	5.2 m/s		+16

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

4 September, thu

	757 mmHg		82%
	4.9 m/s		+16

4 September, Thursday. day, 17°; night, 10°; rain

5 September, fri

	757 mmHg		80%
	4.69 m/s		+16

5 September, Friday. day, 17°; night, 9°; clear

6 September, sat

	757 mmHg		81%
	4.5 m/s		+16

6 September, Saturday. day, 17°; night, 9°; rain

7 September, sun

	756 mmHg		83%
	4.6 m/s		+16

7 September, Sunday. day, 17°; night, 9°; partly cloudy

8 September, mon

	755 mmHg		83%
	4.9 m/s		+16

8 September, Monday. day, 16°; night, 9°; rain

9 September, tue

	756 mmHg		81%
	5 m/s		+16

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

10 September, wed

	756 mmHg		82%
	5 m/s		+16

10 September, Wednesday. day, 16°; night, 10°; overcast

11 September, thu

	757 mmHg		84%
	4.4 m/s		+16

11 September, Thursday. day, 16°; night, 9°; partly cloudy

12 September, fri

	755 mmHg		86%
	5.1 m/s		+16

12 September, Friday. day, 16°; night, 9°; rain

13 September, sat

	755 mmHg		82%
	5.2 m/s		+16

13 September, Saturday. day, 15°; night, 9°; clear

14 September, sun

	754 mmHg		82%
	5.9 m/s		+15

14 September, Sunday. day, 15°; night, 8°; rain

15 September, mon

	754 mmHg		83%
	5.6 m/s		+15

15 September, Monday. day, 14°; night, 7°; rain

16 September, tue

	754 mmHg		81%
	5.1 m/s		+15

16 September, Tuesday. day, 14°; night, 7°; clear

17 September, wed

	755 mmHg		82%
	4.9 m/s		+15

17 September, Wednesday. day, 14°; night, 7°; overcast

18 September, thu

	756 mmHg		84%
	5 m/s		+15

18 September, Thursday. day, 14°; night, 7°; overcast

19 September, fri

	756 mmHg		83%
	5.1 m/s		+15

19 September, Friday. day, 14°; night, 7°; partly cloudy

20 September, sat

	758 mmHg		82%
	5 m/s		+14

20 September, Saturday. day, 14°; night, 7°; partly cloudy

21 September, sun

	757 mmHg		84%
	5.1 m/s		+14

21 September, Sunday. day, 14°; night, 7°; overcast

22 September, mon

	756 mmHg		83%
	5.1 m/s		+14

22 September, Monday. day, 14°; night, 7°; partly cloudy

23 September, tue

	754 mmHg		84%
	5.3 m/s		+14

23 September, Tuesday. day, 13°; night, 7°; rain

24 September, wed

	755 mmHg		83%
	5.3 m/s		+14

24 September, Wednesday. day, 13°; night, 6°; partly cloudy

25 September, thu

	756 mmHg		83%
	4.9 m/s		+14

25 September, Thursday. day, 13°; night, 6°; clear

26 September, fri

	757 mmHg		84%
	5.1 m/s		+14

26 September, Friday. day, 13°; night, 7°; overcast

27 September, sat

	755 mmHg		83%
	5.6 m/s		+14

27 September, Saturday. day, 13°; night, 7°; partly cloudy

28 September, sun

	754 mmHg		85%
	5.4 m/s		+13

28 September, Sunday. day, 12°; night, 7°; rain

29 September, mon

	755 mmHg		85%
	5.1 m/s		+13

29 September, Monday. day, 12°; night, 6°; rain

30 September, tue

	755 mmHg		84%
	4.9 m/s		+13

30 September, Tuesday. day, 12°; night, 6°; clear

1 October, wed

	755 mmHg		84%
	5.3 m/s		+13

1 October, Wednesday. day, 11°; night, 5°; partly cloudy

2 October, thu

	754 mmHg		85%
	4.9 m/s		+13

2 October, Thursday. day, 11°; night, 6°; partly cloudy

3 October, fri

	755 mmHg		86%
	5.1 m/s		+13

3 October, Friday. day, 11°; night, 6°; partly cloudy

4 October, sat

	754 mmHg		86%
	5.6 m/s		+13

4 October, Saturday. day, 11°; night, 6°; rain

Average data for 10 years

Kirkkonummi September

6

sunny days

11

days with precipitation

10

cloudy days

6 sunny days; 11 days with precipitation; 10 cloudy days;

83

%

air humidity

3.8

m/s

WindS

59

mm of precipitation

(9% of annual average)

+15

°C

Water temperature

air humidity 83%; 59 millimeters of precipitation (9% of annual average); Wind southerly 3.8 Meters per second; Water temperature +15°

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

SW

SW

SW

S

S

S

SW

SW

SW

S

S

S

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

Tallinn
Helsinki
Riga
Gdov
Ust'-Luga
Narva
Rotovo
Pechory
Ostrovtsy

Cities with similar weather in September

Riga
Stockholm
Oslo
Yurmala
Palanga
Dublin
Buenos Aires
Copenhagen
Auckland

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

In September, the weather in Kirkkonummi is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Kirkkonummi has 11 rainy, 8 partly cloudy, 6 sunny, and 5 cloudy days in September. The rains are usually moderate.

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