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September weather forecast in Mossel Bay

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

	739 mmHg		71%
	5.6 m/s		+16

31 August, Sunday. day, 19°; night, 9°; rain

1 September, mon

	740 mmHg		69%
	5 m/s		+16

1 September, Monday. day, 20°; night, 9°; clear

2 September, tue

	740 mmHg		71%
	5 m/s		+16

2 September, Tuesday. day, 19°; night, 9°; clear

3 September, wed

	741 mmHg		71%
	4.9 m/s		+16

3 September, Wednesday. day, 19°; night, 9°; clear

4 September, thu

	740 mmHg		70%
	4.69 m/s		+16

4 September, Thursday. day, 20°; night, 9°; partly cloudy

5 September, fri

	741 mmHg		71%
	5.4 m/s		+16

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

6 September, sat

	742 mmHg		71%
	4.8 m/s		+16

6 September, Saturday. day, 19°; night, 9°; partly cloudy

7 September, sun

	740 mmHg		70%
	4.6 m/s		+16

7 September, Sunday. day, 21°; night, 9°; clear

8 September, mon

	739 mmHg		72%
	4.9 m/s		+16

8 September, Monday. day, 20°; night, 9°; partly cloudy

9 September, tue

	740 mmHg		74%
	4.8 m/s		+16

9 September, Tuesday. day, 19°; night, 10°; rain

10 September, wed

	741 mmHg		72%
	5.4 m/s		+16

10 September, Wednesday. day, 18°; night, 9°; rain

11 September, thu

	741 mmHg		74%
	5 m/s		+16

11 September, Thursday. day, 19°; night, 9°; clear

12 September, fri

	741 mmHg		74%
	4.8 m/s		+17

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

13 September, sat

	741 mmHg		71%
	5.1 m/s		+17

13 September, Saturday. day, 20°; night, 9°; clear

14 September, sun

	740 mmHg		70%
	4.9 m/s		+16

14 September, Sunday. day, 21°; night, 10°; partly cloudy

15 September, mon

	739 mmHg		72%
	5.4 m/s		+16

15 September, Monday. day, 20°; night, 10°; clear

16 September, tue

	740 mmHg		72%
	5.3 m/s		+16

16 September, Tuesday. day, 20°; night, 10°; partly cloudy

17 September, wed

	740 mmHg		73%
	5.3 m/s		+16

17 September, Wednesday. day, 19°; night, 10°; rain

18 September, thu

	741 mmHg		72%
	5.6 m/s		+17

18 September, Thursday. day, 19°; night, 10°; clear

19 September, fri

	741 mmHg		72%
	4.9 m/s		+16

19 September, Friday. day, 19°; night, 9°; rain

20 September, sat

	741 mmHg		70%
	5.2 m/s		+16

20 September, Saturday. day, 20°; night, 9°; clear

21 September, sun

	741 mmHg		71%
	4.9 m/s		+16

21 September, Sunday. day, 20°; night, 9°; clear

22 September, mon

	740 mmHg		71%
	5.4 m/s		+17

22 September, Monday. day, 20°; night, 9°; clear

23 September, tue

	739 mmHg		71%
	5.1 m/s		+17

23 September, Tuesday. day, 21°; night, 10°; overcast

24 September, wed

	739 mmHg		72%
	5.3 m/s		+16

24 September, Wednesday. day, 20°; night, 10°; partly cloudy

25 September, thu

	738 mmHg		70%
	5.6 m/s		+16

25 September, Thursday. day, 20°; night, 10°; rain

26 September, fri

	739 mmHg		69%
	5.6 m/s		+16

26 September, Friday. day, 20°; night, 10°; partly cloudy

27 September, sat

	740 mmHg		71%
	5.6 m/s		+17

27 September, Saturday. day, 19°; night, 10°; rain

28 September, sun

	741 mmHg		69%
	5.1 m/s		+17

28 September, Sunday. day, 20°; night, 10°; clear

29 September, mon

	741 mmHg		71%
	5.5 m/s		+17

29 September, Monday. day, 20°; night, 10°; clear

30 September, tue

	740 mmHg		70%
	5.4 m/s		+17

30 September, Tuesday. day, 21°; night, 10°; overcast

1 October, wed

	741 mmHg		74%
	6 m/s		+17

1 October, Wednesday. day, 20°; night, 11°; rain

2 October, thu

	740 mmHg		72%
	5.5 m/s		+17

2 October, Thursday. day, 21°; night, 11°; clear

3 October, fri

	740 mmHg		72%
	5.4 m/s		+17

3 October, Friday. day, 20°; night, 11°; partly cloudy

4 October, sat

	740 mmHg		71%
	5.3 m/s		+17

4 October, Saturday. day, 21°; night, 11°; partly cloudy

Average data for 10 years

Mossel Bay September

13

sunny days

6

days with precipitation

3

cloudy days

13 sunny days; 6 days with precipitation; 3 cloudy days;

71

%

air humidity

3

m/s

WindS

29

mm of precipitation

(7% of annual average)

+16

°C

Water temperature

air humidity 71%; 29 millimeters of precipitation (7% of annual average); Wind southerly 3 Meters per second; Water temperature +16°

Weather graphs for September

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

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S

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S

S

S

S

S

S

S

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1

Average data for 10 years

2

3

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11

12

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20

21

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29

30

Daytime temperature

Night-time temperature

Cities near you

Capetown
Port Elizabeth
East London
Addo
Tulbagh
Upington
Stellenbosch
Plettenberg Bay
Hermanus

Cities with similar weather in September

Sydney
Palanga
Buenos Aires
Copenhagen
Capetown
Gdansk
Looe
Klaipeda
Bruges

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

In September, the weather in Mossel Bay is typically warm. Average daily high temperature in September is about 20 degrees above zero. On average, Mossel Bay has 13 sunny, 9 partly cloudy, 6 rainy, and 2 cloudy days in September. The rains are usually light. September as well as January, February, March, and April is considered the most comfortable time to visit Mossel Bay.

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