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September weather forecast in Greymouth

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

	764 mmHg		78%
	7.6 m/s		+13

31 August, Sunday. day, 12°; night, 10°; partly cloudy

1 September, mon

	762 mmHg		81%
	8.39 m/s		+12

1 September, Monday. day, 12°; night, 10°; rain

2 September, tue

	761 mmHg		81%
	8.2 m/s		+13

2 September, Tuesday. day, 12°; night, 10°; rain

3 September, wed

	762 mmHg		77%
	8.2 m/s		+13

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

4 September, thu

	761 mmHg		76%
	8.8 m/s		+13

4 September, Thursday. day, 12°; night, 10°; rain

5 September, fri

	761 mmHg		78%
	9.5 m/s		+13

5 September, Friday. day, 12°; night, 10°; rain

6 September, sat

	761 mmHg		79%
	8 m/s		+13

6 September, Saturday. day, 12°; night, 10°; partly cloudy

7 September, sun

	761 mmHg		78%
	7.6 m/s		+13

7 September, Sunday. day, 11°; night, 10°; clear

8 September, mon

	761 mmHg		75%
	8.1 m/s		+13

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

9 September, tue

	760 mmHg		76%
	8 m/s		+13

9 September, Tuesday. day, 12°; night, 10°; partly cloudy

10 September, wed

	760 mmHg		79%
	8.39 m/s		+13

10 September, Wednesday. day, 12°; night, 10°; rain

11 September, thu

	761 mmHg		77%
	7.8 m/s		+13

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

12 September, fri

	761 mmHg		79%
	8.1 m/s		+14

12 September, Friday. day, 12°; night, 10°; rain

13 September, sat

	761 mmHg		80%
	8.6 m/s		+13

13 September, Saturday. day, 12°; night, 10°; rain

14 September, sun

	761 mmHg		80%
	8.5 m/s		+13

14 September, Sunday. day, 12°; night, 10°; rain

15 September, mon

	760 mmHg		81%
	9.2 m/s		+13

15 September, Monday. day, 12°; night, 11°; rain

16 September, tue

	759 mmHg		80%
	9 m/s		+13

16 September, Tuesday. day, 12°; night, 10°; rain

17 September, wed

	759 mmHg		79%
	9 m/s		+12

17 September, Wednesday. day, 12°; night, 10°; rain

18 September, thu

	760 mmHg		79%
	9.8 m/s		+13

18 September, Thursday. day, 12°; night, 10°; rain

19 September, fri

	761 mmHg		79%
	8.5 m/s		+13

19 September, Friday. day, 12°; night, 10°; clear

20 September, sat

	761 mmHg		79%
	8 m/s		+13

20 September, Saturday. day, 12°; night, 10°; clear

21 September, sun

	762 mmHg		78%
	8.7 m/s		+13

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

22 September, mon

	762 mmHg		80%
	8.39 m/s		+13

22 September, Monday. day, 12°; night, 10°; partly cloudy

23 September, tue

	761 mmHg		80%
	8.2 m/s		+13

23 September, Tuesday. day, 12°; night, 11°; rain

24 September, wed

	761 mmHg		78%
	9.2 m/s		+13

24 September, Wednesday. day, 12°; night, 10°; rain

25 September, thu

	761 mmHg		78%
	9.3 m/s		+13

25 September, Thursday. day, 12°; night, 10°; rain

26 September, fri

	761 mmHg		78%
	9.1 m/s		+14

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

27 September, sat

	761 mmHg		79%
	8.5 m/s		+13

27 September, Saturday. day, 12°; night, 10°; rain

28 September, sun

	761 mmHg		79%
	9.2 m/s		+13

28 September, Sunday. day, 12°; night, 10°; partly cloudy

29 September, mon

	760 mmHg		81%
	9 m/s		+13

29 September, Monday. day, 12°; night, 11°; rain

30 September, tue

	760 mmHg		80%
	9.7 m/s		+13

30 September, Tuesday. day, 12°; night, 11°; rain

1 October, wed

	760 mmHg		80%
	10.1 m/s		+13

1 October, Wednesday. day, 12°; night, 11°; rain

2 October, thu

	759 mmHg		81%
	9.8 m/s		+13

2 October, Thursday. day, 13°; night, 11°; rain

3 October, fri

	760 mmHg		79%
	9.1 m/s		+14

3 October, Friday. day, 12°; night, 11°; rain

4 October, sat

	759 mmHg		78%
	10 m/s		+14

4 October, Saturday. day, 13°; night, 11°; rain

Average data for 10 years

Greymouth September

7

sunny days

19

days with precipitation

8

cloudy days

7 sunny days; 19 days with precipitation; 8 cloudy days;

79

%

air humidity

5.7

m/s

WindS

218

mm of precipitation

(9% of annual average)

+13

°C

Water temperature

air humidity 79%; 218 millimeters of precipitation (9% of annual average); Wind southerly 5.7 Meters per second; Water temperature +13°

Weather graphs for September

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

SW

S

S

S

S

S

S

S

S

S

S

S

S

S

SW

S

SW

SW

S

S

S

S

SW

S

S

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

Wellington
Dunedin
Queenstown
Christchurch
Invercargill
Wanaka
Akaroa
Milford Sound
Palmerston North

Cities with similar weather in September

Helsinki
Riga
Tallinn
Stockholm
Cholpon-Ata
Oslo
Yurmala
Palanga
Dublin

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

In September, the weather in Greymouth is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Greymouth has 19 rainy, 7 sunny, and 4 partly cloudy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Greymouth.

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