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September weather forecast in Nelson

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

	745 mmHg		80%
	4.4 m/s		+11

31 August, Sunday. day, 11°; night, 7°; clear

1 September, mon

	743 mmHg		82%
	4.3 m/s		+11

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

2 September, tue

	743 mmHg		81%
	4.4 m/s		+11

2 September, Tuesday. day, 12°; night, 7°; clear

3 September, wed

	744 mmHg		82%
	4.1 m/s		+11

3 September, Wednesday. day, 11°; night, 7°; rain

4 September, thu

	743 mmHg		81%
	4.6 m/s		+12

4 September, Thursday. day, 11°; night, 7°; overcast

5 September, fri

	742 mmHg		81%
	4.5 m/s		+12

5 September, Friday. day, 12°; night, 7°; rain

6 September, sat

	743 mmHg		81%
	5 m/s		+12

6 September, Saturday. day, 12°; night, 7°; partly cloudy

7 September, sun

	742 mmHg		80%
	4.69 m/s		+12

7 September, Sunday. day, 12°; night, 7°; clear

8 September, mon

	743 mmHg		78%
	4.4 m/s		+12

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

9 September, tue

	742 mmHg		78%
	4.6 m/s		+12

9 September, Tuesday. day, 11°; night, 7°; overcast

10 September, wed

	741 mmHg		80%
	4.6 m/s		+11

10 September, Wednesday. day, 11°; night, 7°; rain

11 September, thu

	742 mmHg		80%
	4.69 m/s		+12

11 September, Thursday. day, 11°; night, 7°; rain

12 September, fri

	742 mmHg		80%
	4.5 m/s		+12

12 September, Friday. day, 12°; night, 8°; clear

13 September, sat

	742 mmHg		81%
	4.9 m/s		+12

13 September, Saturday. day, 13°; night, 7°; rain

14 September, sun

	742 mmHg		79%
	4.8 m/s		+12

14 September, Sunday. day, 13°; night, 8°; rain

15 September, mon

	741 mmHg		80%
	5.6 m/s		+12

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

16 September, tue

	740 mmHg		79%
	5.1 m/s		+12

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

17 September, wed

	740 mmHg		78%
	5.1 m/s		+12

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

18 September, thu

	741 mmHg		77%
	5.1 m/s		+12

18 September, Thursday. day, 12°; night, 8°; rain

19 September, fri

	742 mmHg		77%
	4.9 m/s		+12

19 September, Friday. day, 12°; night, 7°; clear

20 September, sat

	742 mmHg		78%
	4.69 m/s		+12

20 September, Saturday. day, 12°; night, 7°; clear

21 September, sun

	742 mmHg		78%
	4.9 m/s		+12

21 September, Sunday. day, 12°; night, 8°; clear

22 September, mon

	742 mmHg		79%
	4.9 m/s		+12

22 September, Monday. day, 13°; night, 8°; clear

23 September, tue

	742 mmHg		79%
	4.69 m/s		+12

23 September, Tuesday. day, 13°; night, 9°; partly cloudy

24 September, wed

	742 mmHg		76%
	5.1 m/s		+12

24 September, Wednesday. day, 13°; night, 8°; partly cloudy

25 September, thu

	742 mmHg		77%
	5.1 m/s		+13

25 September, Thursday. day, 13°; night, 8°; partly cloudy

26 September, fri

	742 mmHg		78%
	5.2 m/s		+13

26 September, Friday. day, 13°; night, 8°; partly cloudy

27 September, sat

	742 mmHg		79%
	4.8 m/s		+13

27 September, Saturday. day, 13°; night, 8°; rain

28 September, sun

	742 mmHg		79%
	5.3 m/s		+12

28 September, Sunday. day, 13°; night, 8°; clear

29 September, mon

	741 mmHg		81%
	5.4 m/s		+12

29 September, Monday. day, 13°; night, 8°; rain

30 September, tue

	741 mmHg		80%
	5.2 m/s		+13

30 September, Tuesday. day, 13°; night, 8°; rain

1 October, wed

	741 mmHg		79%
	5.5 m/s		+13

1 October, Wednesday. day, 13°; night, 9°; rain

2 October, thu

	740 mmHg		76%
	5.7 m/s		+13

2 October, Thursday. day, 14°; night, 9°; rain

3 October, fri

	740 mmHg		77%
	5.5 m/s		+13

3 October, Friday. day, 13°; night, 9°; overcast

4 October, sat

	740 mmHg		75%
	5.9 m/s		+13

4 October, Saturday. day, 14°; night, 9°; rain

Average data for 10 years

Nelson September

9

sunny days

14

days with precipitation

6

cloudy days

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

79

%

air humidity

2.8

m/s

WindSW

117

mm of precipitation

(9% of annual average)

+12

°C

Water temperature

air humidity 79%; 117 millimeters of precipitation (9% of annual average); Wind south-westerly 2.8 Meters per second; Water temperature +12°

Weather graphs for September

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

SW

S

S

S

SW

SW

SW

S

SW

S

S

S

SW

SW

S

SW

SW

SW

SW

S

SW

S

SW

S

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

19

20

21

22

23

24

25

26

27

28

29

30

Daytime temperature

Night-time temperature

Cities near you

Wellington
Auckland
Dunedin
Queenstown
Christchurch
Wanaka
Akaroa
Palmerston North
Kaikoura

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 Nelson is typically warm. Average daily high temperature in September is about 12 degrees above zero. On average, Nelson has 14 rainy, 9 sunny, 5 partly cloudy, and 2 cloudy days in September. The rains are usually heavy. September as well as May, June, July, and August is considered the most uncomfortable time to visit Nelson.

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