Weather in Koolunga in September 2025, September - Koolunga, South Australia, Australia

Currently in Koolunga: +21°C

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Weather in September 2025 in Koolunga

The average temperature in Koolunga in September year of 2025 is +16°C. Interesting that the average daytime temperature is as +20°C while the average nightly temperature is +12°C. The September hottest day is the 10th September(Afternoon) with a temperature of about +27°C. The coldest day in Auckland in September 2025 is 27th September(Overnight). The temperature at that time is +3°C.

As a Mainly Cloudy with Precipitation month, September 2025 has 24 days with precipitation.

How Sunny Koolunga Weather in September 2025

The weather in Koolunga is quite changeable, similarly in many other places in . Talking about Koolunga weather in September 2025 can be described as "Mainly Cloudy with Precipitation".

Clear Sky vs Cloudiness	Mainly Cloudy with Precipitation
Rainy Days(Occasional Showers Included)	24
Maximum Temperature	+27°C (Afternoon, 10th September)
Minimum Temperature	+3°C (Overnight, 27th September)

Please find more detailed day by day information about September weather in Auckland in the year 2025 below.

Koolunga Weather September 2025

Early September, from 1 September, 2025 to Sun, 7 September 2025

01.09.2025, Mon
Wind: 8-9 m/s, N,N-W, Pressure: 1019-1011 hPa, Humidity: 43-45%
Overnight	0°C
Morning	+12°C	Occasional Showers
Afternoon	+4°C	Thunderstorm
Evening	+18°C	Occasional Showers
02.09.2025, Tue
Wind: 7-8 m/s, W,N-W, Pressure: 1012-1004 hPa, Humidity: 21-23%
Overnight	+11°C	Occasional Showers
Morning	+19°C	Clear Sky
Afternoon	+15°C	Clear Sky
Evening	+21°C	Clear Sky
03.09.2025, Wen
Wind: 6-7 m/s, W, Pressure: 1020-1012 hPa, Humidity: 45-47%
Overnight	+7°C	Clear Sky
Morning	+9°C	Clear Sky
Afternoon	+13°C	Clear Sky
Evening	+8°C	Clear Sky
04.09.2025, Thu
Wind: 3-4 m/s, W, Pressure: 1025-1017 hPa, Humidity: 53-55%
Overnight	+10°C	Clear Sky
Morning	+11°C	Occasional Showers
Afternoon	+15°C	Rain
Evening	+12°C	Mainly Cloudy
05.09.2025, Fri
Wind: 2-3 m/s, W, Pressure: 1025-1017 hPa, Humidity: 50-52%
Overnight	+5°C	Rain
Morning	+7°C	Cloud
Afternoon	+13°C	Light Cloud
Evening	+9°C	Light Cloud
06.09.2025, Sat
Wind: 7-8 m/s, N,N-W, Pressure: 1023-1015 hPa, Humidity: 35-37%
Overnight	+4°C	Cloud
Morning	+9°C	Cloud
Afternoon	+23°C	Light Cloud
Evening	+19°C	Light Cloud
07.09.2025, Sun
Wind: 10-11 m/s, N, Pressure: 1021-1013 hPa, Humidity: 27-29%
Overnight	+13°C	Cloud
Morning	+18°C	Rain
Afternoon	+20°C	Occasional Showers
Evening	+19°C	Cloud

Early September, Early September, from 1 September, 2025 to Sun, 7 September, 2025

08.09.2025, Mon
Wind: 6-7 m/s, S,S-W, Pressure: 1028-1020 hPa, Humidity: 63-65%
Overnight	+12°C	Rain
Morning	+13°C	Occasional Showers
Afternoon	+17°C	Thunderstorm
Evening	+15°C	Occasional Showers
09.09.2025, Tue
Wind: 2-3 m/s, S-E, Pressure: 1031-1023 hPa, Humidity: 52-54%
Overnight	+6°C	Occasional Showers
Morning	+6°C	Occasional Showers
Afternoon	+15°C	Occasional Showers
Evening	+11°C	Occasional Showers
10.09.2025, Wen
Wind: 3-4 m/s, N, Pressure: 1024-1016 hPa, Humidity: 40-42%
Overnight	+14°C	Occasional Showers
Morning	+21°C	Clear Sky
Afternoon	+25°C	Clear Sky
Evening	+21°C	Clear Sky
11.09.2025, Thu
Wind: 4-5 m/s, N, Pressure: 1025-1017 hPa, Humidity: 37-39%
Overnight	+15°C	Clear Sky
Morning	+16°C	Rain
Afternoon	+22°C	Thunderstorm
Evening	+19°C	Mainly Cloudy
12.09.2025, Fri
Wind: 8-9 m/s, N,N-W, Pressure: 1023-1015 hPa, Humidity: 38-40%
Overnight	+15°C	Thunderstorm
Morning	+16°C	Cloud
Afternoon	+25°C	Light Cloud
Evening	+21°C	Light Cloud
13.09.2025, Sat
Wind: 6-7 m/s, S, Pressure: 1029-1021 hPa, Humidity: 53-55%
Overnight	+9°C	Cloud
Morning	+9°C	Cloud
Afternoon	+16°C	Light Cloud
Evening	+12°C	Mainly Cloudy
14.09.2025, Sun
Wind: 4-5 m/s, S,S-W, Pressure: 1033-1025 hPa, Humidity: 48-50%
Overnight	+7°C	Cloud
Morning	+10°C	Rain
Afternoon	+13°C	Mainly Cloudy
Evening	+7°C	Light Cloud

Early September, from 1 September, 2025 to Sun, 7 September, 2025

15.09.2025, Mon
Wind: 2-3 m/s, W, Pressure: 1031-1023 hPa, Humidity: 47-49%
Overnight	+6°C	Rain
Morning	+7°C	Rain
Afternoon	+16°C	Occasional Showers
Evening	+12°C	Cloud
16.09.2025, Tue
Wind: 6-7 m/s, N,N-W, Pressure: 1020-1012 hPa, Humidity: 26-28%
Overnight	+10°C	Rain
Morning	+18°C	Mainly Cloudy
Afternoon	+26°C	Mainly Cloudy
Evening	+22°C	Mainly Cloudy
17.09.2025, Wen
Wind: 3-4 m/s, E,N-E, Pressure: 1019-1011 hPa, Humidity: 33-35%
Overnight	+12°C	Mainly Cloudy
Morning	+17°C	Mainly Cloudy
Afternoon	+25°C	Mainly Cloudy
Evening	+22°C	Mainly Cloudy
18.09.2025, Thu
Wind: 10-11 m/s, N-E, Pressure: 1019-1011 hPa, Humidity: 30-32%
Overnight	+16°C	Mainly Cloudy
Morning	+18°C	Occasional Showers
Afternoon	+24°C	Occasional Showers
Evening	+17°C	Thunderstorm
19.09.2025, Fri
Wind: 4-5 m/s, N, Pressure: 1009-1001 hPa, Humidity: 61-63%
Overnight	+9°C	Rain
Morning	+9°C	Cloud
Afternoon	+21°C	Light Cloud
Evening	+15°C	Mainly Cloudy
20.09.2025, Sat
Wind: 9-10 m/s, N, Pressure: 1009-1001 hPa, Humidity: 47-49%
Overnight	+15°C	Cloud
Morning	+17°C	Cloud
Afternoon	+21°C	Light Cloud
Evening	+17°C	Light Cloud
21.09.2025, Sun
Wind: 9-10 m/s, W,N-W, Pressure: 1011-1003 hPa, Humidity: 33-35%
Overnight	+5°C	Cloud
Morning	+9°C	Occasional Showers
Afternoon	+20°C	Rain
Evening	+16°C	Rain

Early September, from 1 September, 2025 to Sun, 7 September, 2025

22.09.2025, Mon
Wind: 7-8 m/s, W, Pressure: 1019-1011 hPa, Humidity: 44-46%
Overnight	+9°C	Occasional Showers
Morning	+9°C	Occasional Showers
Afternoon	+12°C	Rain
Evening	+10°C	Rain
23.09.2025, Tue
Wind: 6-7 m/s, S-W, Pressure: 1025-1017 hPa, Humidity: 46-48%
Overnight	+10°C	Occasional Showers
Morning	+11°C	Clear Sky
Afternoon	+15°C	Clear Sky
Evening	+10°C	Clear Sky
24.09.2025, Wen
Wind: 6-7 m/s, W, Pressure: 1019-1011 hPa, Humidity: 50-52%
Overnight	+8°C	Clear Sky
Morning	+8°C	Occasional Showers
Afternoon	+12°C	Occasional Showers
Evening	+9°C	Occasional Showers
25.09.2025, Thu
Wind: 10-11 m/s, S-W, Pressure: 1019-1011 hPa, Humidity: 49-51%
Overnight	+1°C	Occasional Showers
Morning	+2°C	Occasional Showers
Afternoon	+14°C	Occasional Showers
Evening	+11°C	Thunderstorm
26.09.2025, Fri
Wind: 3-4 m/s, S,S-W, Pressure: 1027-1019 hPa, Humidity: 50-52%
Overnight	+3°C	Rain
Morning	+7°C	Cloud
Afternoon	+11°C	Light Cloud
Evening	+10°C	Mainly Cloudy
27.09.2025, Sat
Wind: 2-3 m/s, W, Pressure: 1029-1021 hPa, Humidity: 42-44%
Overnight	+1°C	Cloud
Morning	+8°C	Cloud
Afternoon	+12°C	Light Cloud
Evening	+9°C	Light Cloud
28.09.2025, Sun
Wind: 6-7 m/s, N,N-E, Pressure: 1027-1019 hPa, Humidity: 37-39%
Overnight	+11°C	Cloud
Morning	+14°C	Occasional Showers
Afternoon	+20°C	Thunderstorm
Evening	+15°C	Occasional Showers

Late September, Early September, from 1 September, 2025 to Sun, 7 September, 2025

29.09.2025, Mon
Wind: 6-7 m/s, N, Pressure: 1021-1013 hPa, Humidity: 68-70%
Overnight	+15°C	Occasional Showers
Morning	+15°C	Occasional Showers
Afternoon	+18°C	Rain
Evening	+17°C	Rain
30.09.2025, Tue
Wind: 3-4 m/s, N-W, Pressure: 1019-1011 hPa, Humidity: 49-51%
Overnight	+6°C	Occasional Showers
Morning	+8°C	Occasional Showers
Afternoon	+16°C	Occasional Showers
Evening	+14°C	Occasional Showers