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September weather forecast in Vantaa

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

30 August, sun

	758 mmHg		76%
	5.1 m/s		+16

30 August, Sunday. day, 16°; night, 13°; clear

31 August, mon

	759 mmHg		75%
	5.1 m/s		+16

31 August, Monday. day, 16°; night, 13°; rain

1 September, tue

	758 mmHg		73%
	6.3 m/s		+17

1 September, Tuesday. day, 16°; night, 12°; rain

2 September, wed

	758 mmHg		81%
	6.5 m/s		+16

2 September, Wednesday. day, 15°; night, 13°; rain

3 September, thu

	759 mmHg		76%
	6 m/s		+16

3 September, Thursday. day, 16°; night, 13°; partly cloudy

4 September, fri

	758 mmHg		72%
	5.8 m/s		+16

4 September, Friday. day, 17°; night, 13°; partly cloudy

5 September, sat

	758 mmHg		73%
	4.6 m/s		+16

5 September, Saturday. day, 16°; night, 13°; partly cloudy

6 September, sun

	758 mmHg		73%
	5.6 m/s		+16

6 September, Sunday. day, 16°; night, 13°; clear

7 September, mon

	757 mmHg		75%
	5 m/s		+16

7 September, Monday. day, 16°; night, 12°; clear

8 September, tue

	758 mmHg		74%
	6 m/s		+16

8 September, Tuesday. day, 16°; night, 13°; overcast

9 September, wed

	761 mmHg		75%
	5.4 m/s		+16

9 September, Wednesday. day, 16°; night, 12°; clear

10 September, thu

	762 mmHg		79%
	4.5 m/s		+16

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

11 September, fri

	760 mmHg		79%
	5.3 m/s		+16

11 September, Friday. day, 16°; night, 13°; overcast

12 September, sat

	759 mmHg		74%
	5.3 m/s		+16

12 September, Saturday. day, 16°; night, 14°; partly cloudy

13 September, sun

	758 mmHg		72%
	5.5 m/s		+16

13 September, Sunday. day, 15°; night, 12°; rain

14 September, mon

	757 mmHg		72%
	6.5 m/s		+15

14 September, Monday. day, 14°; night, 12°; partly cloudy

15 September, tue

	756 mmHg		77%
	5.4 m/s		+15

15 September, Tuesday. day, 14°; night, 12°; rain

16 September, wed

	758 mmHg		74%
	5.3 m/s		+15

16 September, Wednesday. day, 14°; night, 11°; partly cloudy

17 September, thu

	757 mmHg		80%
	6 m/s		+15

17 September, Thursday. day, 13°; night, 11°; rain

18 September, fri

	758 mmHg		75%
	5.9 m/s		+15

18 September, Friday. day, 14°; night, 11°; rain

19 September, sat

	759 mmHg		79%
	4.5 m/s		+15

19 September, Saturday. day, 14°; night, 12°; partly cloudy

20 September, sun

	759 mmHg		81%
	6 m/s		+14

20 September, Sunday. day, 14°; night, 11°; rain

21 September, mon

	758 mmHg		81%
	6.3 m/s		+14

21 September, Monday. day, 13°; night, 11°; rain

22 September, tue

	757 mmHg		75%
	6.3 m/s		+14

22 September, Tuesday. day, 13°; night, 10°; rain

23 September, wed

	757 mmHg		75%
	6.1 m/s		+14

23 September, Wednesday. day, 12°; night, 10°; clear

24 September, thu

	759 mmHg		76%
	6.1 m/s		+14

24 September, Thursday. day, 13°; night, 9°; rain

25 September, fri

	762 mmHg		81%
	5.5 m/s		+14

25 September, Friday. day, 12°; night, 10°; overcast

26 September, sat

	762 mmHg		79%
	6 m/s		+14

26 September, Saturday. day, 13°; night, 10°; overcast

27 September, sun

	761 mmHg		76%
	6.3 m/s		+14

27 September, Sunday. day, 12°; night, 10°; clear

28 September, mon

	759 mmHg		76%
	6 m/s		+13

28 September, Monday. day, 11°; night, 10°; clear

29 September, tue

	759 mmHg		73%
	6.6 m/s		+13

29 September, Tuesday. day, 12°; night, 9°; partly cloudy

30 September, wed

	759 mmHg		70%
	5.6 m/s		+13

30 September, Wednesday. day, 11°; night, 8°; partly cloudy

1 October, thu

	759 mmHg		75%
	6.5 m/s		+13

1 October, Thursday. day, 11°; night, 8°; partly cloudy

2 October, fri

	758 mmHg		80%
	6.1 m/s		+13

2 October, Friday. day, 11°; night, 9°; overcast

3 October, sat

	756 mmHg		81%
	7.3 m/s		+13

3 October, Saturday. day, 12°; night, 9°; rain

Average data for 10 years

Vantaa September

6

sunny days

10

days with precipitation

14

cloudy days

6 sunny days; 10 days with precipitation; 14 cloudy days;

75

%

air humidity

4.5

m/s

WindSW

58

mm of precipitation

(9% of annual average)

+15

°C

Water temperature

air humidity 75%; 58 millimeters of precipitation (9% of annual average); Wind south-westerly 4.5 Meters per second; Water temperature +15°

Weather graphs for September

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

SE

N

S

SW

SW

W

W

W

NE

S

S

S

SW

S

SW

S

S

SW

SW

SW

W

W

N

NW

W

W

NW

W

W

W

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

Vyborg
Tallinn
Helsinki
Riga
Sovetskiy
Gdov
Ust'-Luga
Kingisepp
Narva

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 Vantaa is typically warm. Average daily high temperature in September is about 14 degrees above zero. On average, Vantaa has 10 rainy, 10 partly cloudy, 6 sunny, and 4 cloudy days in September. The rains are usually moderate.

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