New South Wales (Sydney)
September
Weather in New South Wales for September 2025
Your guide to New South Wales weather in September - trends and predictions
Until now, September 2025 in New South Wales has been nearly identical to the historical average, with a temperature of 19.3 °C (showing only a slight deviation of -0.3 °C).
The forecast for the next days in New South Wales predicts temperatures to be around 20 °C, close to the historical average.
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 remain steady, reaching an average of 19.4 °C by the end of September.
New South Wales in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 45.3 mm.
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Temperatures
Rain 🌧️
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11
Dry days
19
Rainy days
0
Snow days
20°/12°
Temperatures
24 km/h
Avg max wind
62 %
Avg humidity
New South Wales Weather September
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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.
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
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Sunny | 20° /11° | 0.9 mm | 6 | |
| 2 Sept. | Sunny | 19° /11° | 0.2 mm | 6 | |
| 3 Sept. | Sunny | 18° /11° | 1.6 mm | 6 | |
| 4 Sept. |  Partly cloudy | 20° /12° | 1.8 mm | 6 | |
| 5 Sept. |  Patchy rain possible | 19° /12° | 1.2 mm | 5 | |
| 6 Sept. | Sunny | 19° /11° | 0.3 mm | 6 | |
| 7 Sept. | Partly cloudy | 21° /11° | 0.3 mm | 6 | |
| 8 Sept. | Partly cloudy | 22° /13° | 1.5 mm | 6 | |
| 9 Sept. | Sunny | 21° /12° | 2.1 mm | 6 | |
| 10 Sept. | Patchy rain possible | 19° /11° | 5.5 mm | 5 | |
| 11 Sept. | Sunny | 20° /11° | 1.6 mm | 6 | |
| 12 Sept. | Sunny | 20° /11° | 0.8 mm | 6 | |
| 13 Sept. |  Moderate rain at times | 17° /11° | 0.9 mm | 5 | |
| 14 Sept. | Sunny | 19° /10° | 0.4 mm | 6 | |
| 15 Sept. | Patchy rain possible | 18° /10° | 2.1 mm | 5 | |
| 16 Sept. | Sunny | 26° /17° | 0 mm | 1.3 | |
| 17 Sept. | Sunny | 23° /15° | 0 mm | 1.4 | |
| 18 Sept. | Sunny | 19° /12° | 0 mm | 1.6 | |
| 19 Sept. | Patchy rain possible | 21° /12° | 0.5 mm | 1.5 | |
| 20 Sept. | Sunny | 23° /15° | 0 mm | 6 | |
| 21 Sept. | Sunny | 18° /12° | 0 mm | 6 | |
| 22 Sept. | Patchy rain possible | 19° /12° | 0.5 mm | 5 | |
| 23 Sept. | Patchy rain possible | 17° /14° | 0.3 mm | 5 | |
| 24 Sept. | Patchy rain possible | 20° /14° | 0.7 mm | 5 | |
| 25 Sept. | Patchy rain possible | 19° /12° | 0.1 mm | 5 | |
| 26 Sept. | Sunny | 26° /13° | 0 mm | 6 | |
| 27 Sept. | Sunny | 21° /13° | 0 mm | 6 | |
| 28 Sept. | Patchy rain possible | 15° /10° | 0.5 mm | 4 | |
| 29 Sept. |  Moderate rain | 15° /10° | 8.5 mm | 4 | |
| 30 Sept. | Patchy rain possible | 20° /14° | 3 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 17.5 °C. Temperatures remain fairly consistent throughout the month.
- What is the water temperature in New South Wales in September?
- The average water temperature in New South Wales in September is 17.5 °C.
- Can you swim in New South Wales in September?
- Brisk: quick dips and active swimming are fine, but pack a 2–3 mm spring suit if you plan longer sessions or early-morning outings.
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
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Armidale RegionalBathurst RegionalBlue Mountains MunicipalityBourkeBroken Hill MunicipalityByron ShireCampbelltown MunicipalityCessnockCity 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
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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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