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Weather in Western Australia for December 2025

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

    Temperatures

  • Until now, December 2025 in Western Australia has been nearly identical to the historical average, with a temperature of 28.5 °C (showing only a slight deviation of -0.5 °C).

  • Expect cooler weather in the next days in Western Australia with the forecast suggesting a temperature of 28 °C, lower than the historical average.

  • In general, the average temperature in Western Australia at the beginning of December is 28 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 27.7 °C by the end of December.

    • Rain 🌧️

  • Precipitation in Western Australia during December is a rare event, with an average of fewer than 2 rainy days.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
30
Dry days
Average rainy days
1
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/18°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
44 %
Avg humidity

Western Australia Weather December

Move between months or click on a day
November
January
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
29°
2
Sunny
26°
3
Sunny
26°
4
Sunny
28°
5
Sunny
28°
6
Sunny
29°
7
Sunny
30°
8
Sunny
31°
9
Sunny
30°
10
Sunny
30°
11
Sunny
31°
12
Sunny
32°
13
Patchy rain possible
28°
14
Sunny
29°
15
Partly cloudy
29°
16
Sunny
28°
17
Patchy rain possible
22°
18
Sunny
28°
19
Sunny
30°
20
Sunny
26°
21
Sunny
27°
22
Sunny
29°
23
Sunny
31°
24
Sunny
36°
25
Sunny
35°
26
Partly cloudy
30°
27
Sunny
24°
28
Sunny
25°
29
Sunny
24°
30
Sunny
25°
31
Sunny
31°

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

Discover the average temperatures and weather trends across Western Australia’s cities this December.
SunnyPerth31 °C / 18 °CPatchy rain possibleAlbany23 °C / 12 °CSunnyBusselton23 °C / 14 °CSunnyBunbury27 °C / 15 °CSunnyGeraldton29 °C / 19 °CSunnyWagga Wagga36 °C / 19 °CSunnyMandurah25 °C / 17 °CSunnyKarratha34 °C / 27 °CSunnyNewman38 °C / 26 °CSunnyRockingham25 °C / 17 °CSunnyMaylands30 °C / 18 °CPatchy rain possibleEsperance24 °C / 15 °CMore Locations

Temperatures trend during December in Western Australia

See the weather trend as well as the moving average line

December weather in Western Australia day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
1 Dec. Sunny
Sunny
 29° /17° 0.3 mm 10
2 Dec. Sunny
Sunny
 26° /16° 0.5 mm 9
3 Dec. Sunny
Sunny
 26° /15° 0.1 mm 10
4 Dec. Sunny
Sunny
 28° /16° 0 mm 10
5 Dec. Sunny
Sunny
 28° /16° 0 mm 10
6 Dec. Sunny
Sunny
 29° /16° 0 mm 10
7 Dec. Sunny
Sunny
 30° /16° 0.4 mm 10
8 Dec. Sunny
Sunny
 31° /17° 0.8 mm 10
9 Dec. Sunny
Sunny
 30° /17° 0 mm 10
10 Dec. Sunny
Sunny
 30° /18° 0.2 mm 10
11 Dec. Sunny
Sunny
 31° /18° 0.5 mm 11
12 Dec. Sunny
Sunny
 32° /18° 0 mm 11
13 Dec. Patchy rain possible
Patchy rain possible
 28° /16° 0.4 mm 10
14 Dec. Sunny
Sunny
 29° /16° 0.8 mm 10
15 Dec. Partly cloudy
Partly cloudy
 29° /17° 0 mm 10
16 Dec. Sunny
Sunny
 28° /17° 0.1 mm 10
17 Dec. Patchy rain possible
Patchy rain possible
 22° /19° 0.1 mm 3.6
18 Dec. Sunny
Sunny
 28° /16° 0 mm 3.7
19 Dec. Sunny
Sunny
 30° /19° 0 mm 3.5
20 Dec. Sunny
Sunny
 26° /17° 0 mm 3.5
21 Dec. Sunny
Sunny
 27° /16° 0 mm 4
22 Dec. Sunny
Sunny
 29° /18° 0 mm 9
23 Dec. Sunny
Sunny
 31° /19° 0 mm 10
24 Dec. Sunny
Sunny
 36° /21° 0 mm 10
25 Dec. Sunny
Sunny
 35° /22° 0 mm 10
26 Dec. Partly cloudy
Partly cloudy
 30° /19° 0 mm 10
27 Dec. Sunny
Sunny
 24° /17° 0 mm 9
28 Dec. Sunny
Sunny
 25° /16° 0 mm 9
29 Dec. Sunny
Sunny
 24° /17° 0 mm 9
30 Dec. Sunny
Sunny
 25° /16° 0 mm 9
31 Dec. Sunny
Sunny
 31° /19° 0 mm 10
Next
Important Notice
Our weather forecast for Western Australia in December 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 December - FAQ

What are the expected maximum and minimum temperatures in Western Australia during December?
Expect warm days with temperatures around 31°, cooling to mild conditions of 18° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Western Australia during December?
Rainfall in Western Australia during December is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 1 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Western Australia during December?
The average wind speed in Western Australia during December is 27 km/h, suggesting breezy to windy conditions, depending on your activities.

UV exposure in Western Australia during December

Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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
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Location coordinates Where is Western Australia?

Get accurate weather forecasts for Western Australia, located at latitude -31.952 and longitude 115.861. Stay updated with localized weather information tailored for Western Australia.

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