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Australia weather

Weather in New South Wales for September 2026

Your guide to New South Wales weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in New South Wales at the beginning of September is 19.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 20.4 °C by the end of September.

    • Rain 🌧️

  • New South Wales in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 45.3 mm.

    • More

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Average dry days
11
Dry days
Average rainy days
19
Rainy days
Average snowy days
0
Snow days
Average temperatures
20°/12°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
62 %
Avg humidity

New South Wales Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
20°
2
Sunny
19°
3
Sunny
18°
4
Partly cloudy
20°
5
Patchy rain possible
19°
6
Sunny
19°
7
Partly cloudy
21°
8
Partly cloudy
22°
9
Sunny
21°
10
Patchy rain possible
19°
11
Sunny
20°
12
Sunny
20°
13
Moderate rain at times
17°
14
Sunny
19°
15
Patchy rain possible
19°
16
Sunny
22°
17
Sunny
22°
18
Sunny
23°
19
Sunny
23°
20
Sunny
24°
21
Moderate rain at times
20°
22
Partly cloudy
19°
23
Sunny
20°
24
Partly cloudy
21°
25
Partly cloudy
21°
26
Moderate rain at times
20°
27
Cloudy
20°
28
Patchy rain possible
20°
29
Heavy rain at times
20°
30
Patchy rain possible
21°

What’s the Weather Like in New South Wales This September?

Discover the average temperatures and weather trends across New South Wales’s cities this September.
Patchy rain possibleSydney20 °C / 12 °CSunnyNewcastle20 °C / 12 °CSunnyWollongong20 °C / 10 °CSunnyParramatta23 °C / 11 °CSunnyCoffs Harbour21 °C / 13 °CSunnyGrafton25 °C / 10 °CSunnyLiverpool23 °C / 10 °CSunnyPort Macquarie21 °C / 12 °CSunnyBathurst18 °C / 3 °CSunnyArmidale20 °C / 4 °CSunnyHornsby22 °C / 11 °CSunnyForster23 °C / 10 °CMore Locations

Temperatures trend during September in New South Wales

See the weather trend as well as the moving average line

September weather in New South Wales day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 20° /11° 0.9 mm 6
2 Sept. Sunny
Sunny
 19° /11° 0.2 mm 6
3 Sept. Sunny
Sunny
 18° /11° 1.6 mm 6
4 Sept. Partly cloudy
Partly cloudy
 20° /12° 1.8 mm 6
5 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 1.2 mm 5
6 Sept. Sunny
Sunny
 19° /11° 0.3 mm 6
7 Sept. Partly cloudy
Partly cloudy
 21° /11° 0.3 mm 6
8 Sept. Partly cloudy
Partly cloudy
 22° /13° 1.5 mm 6
9 Sept. Sunny
Sunny
 21° /12° 2.1 mm 6
10 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 5.5 mm 5
11 Sept. Sunny
Sunny
 20° /11° 1.6 mm 6
12 Sept. Sunny
Sunny
 20° /11° 0.8 mm 6
13 Sept. Moderate rain at times
Moderate rain at times
 17° /11° 0.9 mm 5
14 Sept. Sunny
Sunny
 19° /10° 0.4 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 1.6 mm 5
16 Sept. Sunny
Sunny
 22° /12° 0.7 mm 7
17 Sept. Sunny
Sunny
 22° /12° 0.1 mm 6
18 Sept. Sunny
Sunny
 23° /12° 0 mm 6
19 Sept. Sunny
Sunny
 23° /13° 0.1 mm 7
20 Sept. Sunny
Sunny
 24° /13° 0 mm 7
21 Sept. Moderate rain at times
Moderate rain at times
 20° /12° 1.3 mm 6
22 Sept. Partly cloudy
Partly cloudy
 19° /12° 2.6 mm 5
23 Sept. Sunny
Sunny
 20° /12° 1.5 mm 6
24 Sept. Partly cloudy
Partly cloudy
 21° /12° 2.2 mm 6
25 Sept. Partly cloudy
Partly cloudy
 21° /12° 0.1 mm 6
26 Sept. Moderate rain at times
Moderate rain at times
 20° /13° 6.5 mm 5
27 Sept. Cloudy
Cloudy
 20° /13° 1.7 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 20° /14° 2.2 mm 5
29 Sept. Heavy rain at times
Heavy rain at times
 20° /14° 2.7 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 21° /14° 2.4 mm 6
Next
Important Notice
Our weather forecast for New South Wales in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the New South Wales forecast closer to your planned date for the most up-to-date weather information.
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New South Wales in September - FAQ

What are the expected maximum and minimum temperatures in New South Wales during September?
Enjoy moderate daytime temperatures of up to 20° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in New South Wales during September?
In September, New South Wales can expect light to moderate rainfall, totaling 45.3 mm across approximately 19 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in New South Wales during September?
The average wind speed in New South Wales during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

New South Wales water temperatures in September

The average water temperature of the Pacific Ocean near New South Wales in September is 18.2 °C. At the beginning of September temperatures are around 17.5 °C; by the end of the month they get warmer and reach 18.8 °C.

What is the water temperature in New South Wales in September?
The average water temperature in New South Wales in September is 18.2 °C.
Can you swim in New South Wales in September?
Refreshing and invigorating. Expect to feel chilled after 10–20 minutes; a shorty wetsuit extends water time, especially at dawn.

September rainfall patterns in New South Wales

Explore the daily rainfall trends and prepare for New South Waless September weather 💧

UV exposure in New South Wales during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Counties in New South Wales
Select a county for an accurate weather forecast
Armidale RegionalBathurst RegionalBlue Mountains MunicipalityBourkeBroken Hill MunicipalityByron ShireCampbelltown MunicipalityCentral CoastCessnockCity of SydneyClarence ValleyCoffs HarbourEurobodallaFairfieldGoulburn MulwareeGriffithHilltopsHornsby ShireInverellKiamaKu-ring-gaiLismore MunicipalityMaitland MunicipalityMid-CoastMid-Western RegionalMurray RiverMuswellbrookNewcastleNorthern BeachesOrange MunicipalityParkesParramattaPort Macquarie-HastingsRichmond ValleySnowy Monaro RegionalTamworth MunicipalityWestern Plains RegionalWingecarribeeWollongong
Top locations in New South Wales
Select a location for an accurate weather forecast
ArmidaleBathurstCoffs HarbourGraftonLiverpoolNewcastleParramattaPort MacquarieSydneyWollongong
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Location coordinates Where is New South Wales?

Get accurate weather forecasts for New South Wales, located at latitude -33.868 and longitude 151.207. Stay updated with localized weather information tailored for New South Wales.

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