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September weather forecast in Onega

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

	756 mmHg		74%
	5.3 m/s		+14

30 August, Sunday. day, 14°; night, 11°; rain

31 August, mon

	757 mmHg		75%
	5.5 m/s		+14

31 August, Monday. day, 14°; night, 12°; clear

1 September, tue

	757 mmHg		75%
	6.4 m/s		+14

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

2 September, wed

	757 mmHg		77%
	5.8 m/s		+13

2 September, Wednesday. day, 12°; night, 10°; overcast

3 September, thu

	757 mmHg		76%
	5.1 m/s		+13

3 September, Thursday. day, 13°; night, 11°; overcast

4 September, fri

	757 mmHg		76%
	5.3 m/s		+14

4 September, Friday. day, 14°; night, 11°; partly cloudy

5 September, sat

	757 mmHg		75%
	5.5 m/s		+14

5 September, Saturday. day, 15°; night, 12°; partly cloudy

6 September, sun

	756 mmHg		75%
	6.4 m/s		+13

6 September, Sunday. day, 14°; night, 12°; rain

7 September, mon

	755 mmHg		81%
	5.5 m/s		+13

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

8 September, tue

	756 mmHg		83%
	5 m/s		+13

8 September, Tuesday. day, 13°; night, 11°; overcast

9 September, wed

	759 mmHg		79%
	5.4 m/s		+13

9 September, Wednesday. day, 13°; night, 11°; overcast

10 September, thu

	761 mmHg		77%
	5.3 m/s		+13

10 September, Thursday. day, 12°; night, 11°; overcast

11 September, fri

	761 mmHg		80%
	4.4 m/s		+13

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

12 September, sat

	759 mmHg		83%
	5.1 m/s		+13

12 September, Saturday. day, 13°; night, 12°; overcast

13 September, sun

	757 mmHg		83%
	6.1 m/s		+13

13 September, Sunday. day, 13°; night, 11°; rain

14 September, mon

	757 mmHg		81%
	5.1 m/s		+13

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

15 September, tue

	755 mmHg		81%
	5.8 m/s		+13

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

16 September, wed

	755 mmHg		85%
	5.4 m/s		+12

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

17 September, thu

	757 mmHg		82%
	6 m/s		+12

17 September, Thursday. day, 12°; night, 10°; clear

18 September, fri

	757 mmHg		81%
	6.4 m/s		+12

18 September, Friday. day, 11°; night, 9°; rain

19 September, sat

	758 mmHg		83%
	5.3 m/s		+12

19 September, Saturday. day, 11°; night, 10°; overcast

20 September, sun

	760 mmHg		82%
	5.3 m/s		+12

20 September, Sunday. day, 11°; night, 9°; overcast

21 September, mon

	760 mmHg		81%
	5.3 m/s		+12

21 September, Monday. day, 11°; night, 9°; overcast

22 September, tue

	758 mmHg		85%
	5.9 m/s		+11

22 September, Tuesday. day, 10°; night, 9°; rain

23 September, wed

	755 mmHg		86%
	6 m/s		+11

23 September, Wednesday. day, 10°; night, 8°; rain

24 September, thu

	755 mmHg		87%
	6.4 m/s		+11

24 September, Thursday. day, 10°; night, 9°; rain

25 September, fri

	757 mmHg		87%
	6.6 m/s		+11

25 September, Friday. day, 9°; night, 8°; rain

26 September, sat

	759 mmHg		82%
	5.6 m/s		+11

26 September, Saturday. day, 9°; night, 8°; overcast

27 September, sun

	758 mmHg		82%
	5.6 m/s		+10

27 September, Sunday. day, 8°; night, 7°; rain

28 September, mon

	755 mmHg		81%
	6.9 m/s		+10

28 September, Monday. day, 8°; night, 6°; clear

29 September, tue

	753 mmHg		82%
	7.3 m/s		+10

29 September, Tuesday. day, 7°; night, 7°; rain

30 September, wed

	754 mmHg		82%
	6.5 m/s		+10

30 September, Wednesday. day, 7°; night, 6°; rain

1 October, thu

	756 mmHg		81%
	5.1 m/s		+9

1 October, Thursday. day, 7°; night, 6°; overcast

2 October, fri

	756 mmHg		85%
	6.1 m/s		+9

2 October, Friday. day, 7°; night, 6°; rain

3 October, sat

	757 mmHg		86%
	6.5 m/s		+9

3 October, Saturday. day, 7°; night, 6°; overcast

Average data for 10 years

Onega September

2

sunny days

15

days with precipitation

13

cloudy days

2 sunny days; 15 days with precipitation; 13 cloudy days;

81

%

air humidity

4.5

m/s

WindSW

56

mm of precipitation

(9% of annual average)

+12

°C

Water temperature

air humidity 81%; 56 millimeters of precipitation (9% of annual average); Wind south-westerly 4.5 Meters per second; Water temperature +12°

Weather graphs for September

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

W

NE

W

SW

S

SW

N

NW

NW

W

SW

S

SW

W

SW

W

SW

SW

S

S

SE

SE

S

SW

NW

W

S

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

Arkhangelsk
Severodvinsk
Solovki
Medvezhyegorsk
Podporozhye
Plesetsk
Vytegra
Segezha
Oshta

Cities with similar weather in September

Saint Petersburg
Novosibirsk
Pskov
Cheboksary
Petrozavodsk
Veliky Novgorod
Helsinki
Cherepovets
Tallinn

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

In September, the weather in Onega is typically warm. Average daily high temperature in September is about 11 degrees above zero. On average, Onega has 15 rainy, 11 cloudy, 2 sunny, and 2 partly cloudy days in September. The rains are usually moderate. September as well as April and October is considered the most uncomfortable time to visit Onega.

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