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September weather forecast in Saint Petersburg

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

	760 mmHg		80%
	5.2 m/s		+16

31 August, Sunday. day, 17°; night, 10°; partly cloudy

1 September, mon

	761 mmHg		81%
	5.2 m/s		+16

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

2 September, tue

	762 mmHg		82%
	4.8 m/s		+16

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

3 September, wed

	762 mmHg		84%
	5.3 m/s		+16

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

4 September, thu

	762 mmHg		81%
	4.8 m/s		+15

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

5 September, fri

	762 mmHg		83%
	4.69 m/s		+16

5 September, Friday. day, 16°; night, 9°; partly cloudy

6 September, sat

	762 mmHg		81%
	5.3 m/s		+16

6 September, Saturday. day, 16°; night, 9°; clear

7 September, sun

	761 mmHg		84%
	4.69 m/s		+15

7 September, Sunday. day, 16°; night, 9°; clear

8 September, mon

	760 mmHg		83%
	4.9 m/s		+16

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

9 September, tue

	760 mmHg		83%
	5.5 m/s		+16

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

10 September, wed

	761 mmHg		82%
	5 m/s		+15

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

11 September, thu

	762 mmHg		82%
	4.8 m/s		+15

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

12 September, fri

	761 mmHg		84%
	5.4 m/s		+15

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

13 September, sat

	760 mmHg		82%
	5.9 m/s		+15

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

14 September, sun

	760 mmHg		80%
	6.1 m/s		+15

14 September, Sunday. day, 14°; night, 9°; partly cloudy

15 September, mon

	758 mmHg		82%
	6.3 m/s		+14

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

16 September, tue

	759 mmHg		84%
	5.7 m/s		+14

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

17 September, wed

	760 mmHg		84%
	5.4 m/s		+14

17 September, Wednesday. day, 13°; night, 7°; rain

18 September, thu

	761 mmHg		83%
	5.6 m/s		+14

18 September, Thursday. day, 13°; night, 7°; overcast

19 September, fri

	761 mmHg		82%
	5.8 m/s		+14

19 September, Friday. day, 14°; night, 7°; rain

20 September, sat

	763 mmHg		82%
	5.5 m/s		+14

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

21 September, sun

	762 mmHg		83%
	5.5 m/s		+14

21 September, Sunday. day, 13°; night, 7°; overcast

22 September, mon

	761 mmHg		83%
	5.8 m/s		+14

22 September, Monday. day, 13°; night, 7°; rain

23 September, tue

	759 mmHg		84%
	5.6 m/s		+14

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

24 September, wed

	760 mmHg		82%
	5.7 m/s		+13

24 September, Wednesday. day, 12°; night, 6°; partly cloudy

25 September, thu

	761 mmHg		82%
	5.4 m/s		+13

25 September, Thursday. day, 12°; night, 6°; clear

26 September, fri

	762 mmHg		84%
	5.1 m/s		+13

26 September, Friday. day, 12°; night, 6°; overcast

27 September, sat

	761 mmHg		84%
	5.3 m/s		+12

27 September, Saturday. day, 12°; night, 7°; rain

28 September, sun

	760 mmHg		84%
	5.9 m/s		+12

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

29 September, mon

	761 mmHg		83%
	5.9 m/s		+12

29 September, Monday. day, 11°; night, 6°; rain

30 September, tue

	760 mmHg		85%
	5.5 m/s		+12

30 September, Tuesday. day, 11°; night, 6°; rain

1 October, wed

	760 mmHg		85%
	5.8 m/s		+12

1 October, Wednesday. day, 11°; night, 5°; rain

2 October, thu

	760 mmHg		85%
	5.3 m/s		+11

2 October, Thursday. day, 11°; night, 5°; partly cloudy

3 October, fri

	760 mmHg		85%
	5.4 m/s		+12

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

4 October, sat

	760 mmHg		86%
	5.8 m/s		+11

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

Average data for 10 years

Saint Petersburg September

4

sunny days

12

days with precipitation

11

cloudy days

4 sunny days; 12 days with precipitation; 11 cloudy days;

83

%

air humidity

4

m/s

WindS

61

mm of precipitation

(9% of annual average)

+14

°C

Water temperature

air humidity 83%; 61 millimeters of precipitation (9% of annual average); Wind southerly 4 Meters per second; Water temperature +14°

Weather graphs for September

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

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S

S

S

S

SW

SW

SW

S

S

S

S

SW

S

S

S

SW

SW

SW

SW

S

S

SW

SW

SW

SW

S

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

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20

21

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27

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29

30

Daytime temperature

Night-time temperature

Cities near you

Pskov
Veliky Novgorod
Sortavala
Velikie Luky
Vyborg
Gdov
Borovichy
Nevel
Ostashkov

Cities with similar weather in September

Novosibirsk
Cheboksary
Ulyanovsk
Petrozavodsk
Riga
Cherepovets
Tallinn
Rybinsk
Petropavlovsk

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

In September, the weather in Saint Petersburg is typically warm. Average daily high temperature in September is about 14 degrees above zero. On average, Saint Petersburg has 12 rainy, 8 partly cloudy, 6 cloudy, and 4 sunny days in September. The rains are usually moderate.

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