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Australia weather

Weather in Western Australia for September 2027

Your guide to Western Australia weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Western Australia at the beginning of September is 17.5 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.7 °C by the end of September.

    • Rain 🌧️

  • Western Australia experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 54.1 mm.

    • More

  • Is September a good time to visit Western Australia? check out the best time to travel to Western Australia page.

  • ✨ Is September a good time to visit Western Australia? – Ask the AI Weatherman

Average dry days
22
Dry days
Average rainy days
8
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/11°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Western Australia Weather September

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

What’s the Weather Like in Western Australia This September?

Discover the average temperatures and weather trends across Western Australia’s cities this September.
Patchy rain possiblePerth19 °C / 11 °CPatchy rain possibleAlbany17 °C / 9 °CPatchy rain possibleBusselton17 °C / 11 °CPatchy rain possibleBunbury17 °C / 10 °CSunnyGeraldton22 °C / 12 °CPatchy rain possibleMandurah18 °C / 12 °CSunnyWagga Wagga23 °C / 10 °CPatchy rain possibleRockingham18 °C / 13 °CSunnyKarratha30 °C / 22 °CSunnyNewman29 °C / 17 °CPatchy rain possibleMaylands20 °C / 12 °CPatchy rain possibleEsperance18 °C / 10 °CMore Locations

Temperatures trend during September in Western Australia

See the weather trend as well as the moving average line

September weather in Western Australia day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 18° /11° 1.7 mm 6
2 Sept. Patchy rain possible
Patchy rain possible
 17° /11° 2 mm 5
3 Sept. Light rain
Light rain
 17° /11° 4.8 mm 4
4 Sept. Light rain
Light rain
 17° /11° 3.2 mm 5
5 Sept. Light rain
Light rain
 17° /11° 9.8 mm 5
6 Sept. Light rain
Light rain
 17° /11° 4.4 mm 5
7 Sept. Patchy rain possible
Patchy rain possible
 19° /10° 1.4 mm 6
8 Sept. Overcast
Overcast
 19° /11° 0.2 mm 6
9 Sept. Light rain
Light rain
 19° /10° 2.6 mm 6
10 Sept. Partly cloudy
Partly cloudy
 19° /10° 0.1 mm 6
11 Sept. Sunny
Sunny
 21° /10° 0.1 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 1.6 mm 6
13 Sept. Light rain
Light rain
 19° /12° 7.2 mm 6
14 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 1.7 mm 5
15 Sept. Patchy rain possible
Patchy rain possible
 19° /12° 1.8 mm 5
16 Sept. Patchy rain possible
Patchy rain possible
 20° /13° 1.2 mm 5
17 Sept. Patchy rain possible
Patchy rain possible
 20° /12° 1.2 mm 6
18 Sept. Patchy rain possible
Patchy rain possible
 19° /11° 0.9 mm 5
19 Sept. Patchy rain possible
Patchy rain possible
 18° /12° 1.6 mm 5
20 Sept. Sunny
Sunny
 20° /11° 0.6 mm 6
21 Sept. Sunny
Sunny
 22° /11° 0.1 mm 7
22 Sept. Sunny
Sunny
 23° /12° 0 mm 7
23 Sept. Sunny
Sunny
 21° /12° 0.2 mm 7
24 Sept. Sunny
Sunny
 20° /11° 0.2 mm 6
25 Sept. Overcast
Overcast
 20° /11° 0.1 mm 6
26 Sept. Sunny
Sunny
 21° /11° 0.6 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 1.7 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 1 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 0.8 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 21° /13° 1.3 mm 6
Next
Important Notice
Our weather forecast for Western Australia 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 Western Australia forecast closer to your planned date for the most up-to-date weather information.
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Western Australia in September - FAQ

What are the expected maximum and minimum temperatures in Western Australia during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Western Australia during September?
Moderate rainfall is anticipated in Western Australia during September, with a total of 54.1 mm spread over approximately 8 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Western Australia during September?
The average wind speed in Western Australia during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Western Australia

Explore the daily rainfall trends and prepare for Western Australias September weather 💧
Typically, Western Australia has 8 rainy days in September with a total of 54.1 mm of rainfall.

UV exposure in Western Australia during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Counties in Western Australia
Select a county for an accurate weather forecast
AlbanyAugusta-Margaret River ShireBayswaterBroomeBunburyBusseltonCarnarvonCity of PerthEast PilbaraEsperance ShireExmouthGreater GeraldtonKalgoorlie/BoulderKarrathaKwinanaMandurahManjimupRockinghamWannerooYalgoo
Top locations in Western Australia
Select a location for an accurate weather forecast
AlbanyBunburyBusseltonGeraldtonKarrathaMandurahNewmanPerthRockinghamWagga Wagga
More Locations
Quick links
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