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September weather forecast in Tallinn

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

	759 mmHg		79%
	6.1 m/s		+17

31 August, Sunday. day, 17°; night, 12°; rain

1 September, mon

	761 mmHg		78%
	5.8 m/s		+17

1 September, Monday. day, 17°; night, 11°; partly cloudy

2 September, tue

	761 mmHg		79%
	5.9 m/s		+17

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

3 September, wed

	760 mmHg		82%
	6.2 m/s		+16

3 September, Wednesday. day, 17°; night, 12°; rain

4 September, thu

	761 mmHg		80%
	5.8 m/s		+16

4 September, Thursday. day, 17°; night, 12°; partly cloudy

5 September, fri

	761 mmHg		78%
	5.7 m/s		+16

5 September, Friday. day, 17°; night, 11°; clear

6 September, sat

	761 mmHg		80%
	5.7 m/s		+16

6 September, Saturday. day, 17°; night, 11°; rain

7 September, sun

	760 mmHg		81%
	5.7 m/s		+16

7 September, Sunday. day, 17°; night, 11°; clear

8 September, mon

	759 mmHg		81%
	6.2 m/s		+16

8 September, Monday. day, 17°; night, 11°; rain

9 September, tue

	760 mmHg		79%
	6.2 m/s		+16

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

10 September, wed

	759 mmHg		80%
	6 m/s		+16

10 September, Wednesday. day, 16°; night, 11°; overcast

11 September, thu

	761 mmHg		81%
	5.4 m/s		+16

11 September, Thursday. day, 16°; night, 11°; clear

12 September, fri

	759 mmHg		83%
	6.2 m/s		+16

12 September, Friday. day, 16°; night, 11°; rain

13 September, sat

	759 mmHg		80%
	6.6 m/s		+16

13 September, Saturday. day, 16°; night, 11°; rain

14 September, sun

	758 mmHg		79%
	7.2 m/s		+15

14 September, Sunday. day, 15°; night, 10°; rain

15 September, mon

	758 mmHg		81%
	7 m/s		+15

15 September, Monday. day, 14°; night, 9°; rain

16 September, tue

	758 mmHg		79%
	6.4 m/s		+15

16 September, Tuesday. day, 14°; night, 9°; partly cloudy

17 September, wed

	759 mmHg		79%
	6 m/s		+15

17 September, Wednesday. day, 14°; night, 9°; partly cloudy

18 September, thu

	760 mmHg		79%
	6.2 m/s		+15

18 September, Thursday. day, 14°; night, 9°; overcast

19 September, fri

	760 mmHg		80%
	6.2 m/s		+15

19 September, Friday. day, 14°; night, 9°; partly cloudy

20 September, sat

	762 mmHg		79%
	6.2 m/s		+15

20 September, Saturday. day, 14°; night, 9°; partly cloudy

21 September, sun

	761 mmHg		82%
	6.3 m/s		+14

21 September, Sunday. day, 14°; night, 9°; overcast

22 September, mon

	760 mmHg		80%
	6.3 m/s		+14

22 September, Monday. day, 14°; night, 9°; partly cloudy

23 September, tue

	758 mmHg		81%
	6.4 m/s		+14

23 September, Tuesday. day, 13°; night, 8°; partly cloudy

24 September, wed

	759 mmHg		79%
	6.5 m/s		+14

24 September, Wednesday. day, 14°; night, 8°; clear

25 September, thu

	761 mmHg		79%
	6 m/s		+14

25 September, Thursday. day, 13°; night, 8°; clear

26 September, fri

	761 mmHg		82%
	6.3 m/s		+14

26 September, Friday. day, 14°; night, 8°; overcast

27 September, sat

	760 mmHg		81%
	6.9 m/s		+14

27 September, Saturday. day, 14°; night, 9°; rain

28 September, sun

	758 mmHg		83%
	7 m/s		+13

28 September, Sunday. day, 13°; night, 9°; rain

29 September, mon

	759 mmHg		82%
	6.5 m/s		+13

29 September, Monday. day, 12°; night, 8°; rain

30 September, tue

	759 mmHg		81%
	6.2 m/s		+13

30 September, Tuesday. day, 12°; night, 8°; partly cloudy

1 October, wed

	759 mmHg		81%
	6.7 m/s		+13

1 October, Wednesday. day, 12°; night, 7°; partly cloudy

2 October, thu

	758 mmHg		82%
	6.1 m/s		+13

2 October, Thursday. day, 12°; night, 7°; partly cloudy

3 October, fri

	759 mmHg		83%
	6.3 m/s		+13

3 October, Friday. day, 12°; night, 8°; partly cloudy

4 October, sat

	758 mmHg		83%
	6.9 m/s		+13

4 October, Saturday. day, 12°; night, 7°; rain

Average data for 10 years

Tallinn September

5

sunny days

12

days with precipitation

9

cloudy days

5 sunny days; 12 days with precipitation; 9 cloudy days;

80

%

air humidity

4.69

m/s

WindS

66

mm of precipitation

(10% of annual average)

+15

°C

Water temperature

air humidity 80%; 66 millimeters of precipitation (10% of annual average); Wind southerly 4.69 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

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

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

Pskov
Helsinki
Riga
Gdov
Ust'-Luga
Kingisepp
Narva
Yamm
Rotovo

Cities with similar weather in September

Stockholm
Oslo
Palanga
Dublin
Buenos Aires
Copenhagen
Melbourne
Auckland
Capetown

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

In September, the weather in Tallinn is typically warm. Average daily high temperature in September is about 15 degrees above zero. On average, Tallinn has 12 rainy, 9 partly cloudy, 5 sunny, and 4 cloudy days in September. The rains are usually moderate.

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