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Australia weather

Weather in Western Australia for May 2026

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

    Temperatures

  • Until now, May 2026 in Western Australia is slightly cooler than the historical average by -1.7 °C.

  • Expect cooler weather in the next days in Western Australia with the forecast suggesting a temperature of 20.4 °C, lower than the historical average.

  • In general, the average temperature in Western Australia at the beginning of May is 22.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.6 °C by the end of May.

    • Rain 🌧️

  • Western Australia in May brings notable rainfall, with an average of 17 rainy days and a total precipitation of 66.7 mm.

    • More

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

Average dry days
14
Dry days
Average rainy days
17
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/14°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
56 %
Avg humidity

Western Australia Weather May

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

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

Discover the average temperatures and weather trends across Western Australia’s cities this May.
Patchy rain possiblePerth22 °C / 14 °CPatchy rain possibleAlbany19 °C / 11 °CPatchy rain possibleBusselton20 °C / 14 °CPatchy rain possibleBunbury21 °C / 13 °CSunnyGeraldton25 °C / 16 °CSunnyWagga Wagga25 °C / 14 °CPatchy rain possibleMandurah21 °C / 14 °CPatchy rain possibleRockingham22 °C / 15 °CSunnyKarratha29 °C / 21 °CSunnyNewman26 °C / 14 °CPatchy rain possibleMaylands23 °C / 14 °CPatchy rain possibleEsperance20 °C / 12 °CMore Locations

Temperatures trend during May in Western Australia

See the weather trend as well as the moving average line

May weather in Western Australia day by day

Click on a date for more information
April June
Date Weather Temperatures Rain UV More
1 May Sunny
Sunny
 23° /13° 0.3 mm 7
2 May Partly cloudy
Partly cloudy
 22° /13° 0.6 mm 6
3 May Sunny
Sunny
 23° /13° 0.9 mm 6
4 May Sunny
Sunny
 22° /13° 1.3 mm 6
5 May Sunny
Sunny
 22° /13° 2.8 mm 6
6 May Moderate or heavy rain shower
Moderate or heavy rain shower
 22° /13° 3.4 mm 6
7 May Cloudy
Cloudy
 24° /13° 0.1 mm 6
8 May Sunny
Sunny
 25° /14° 0.1 mm 7
9 May Sunny
Sunny
 25° /16° 0.1 mm 7
10 May Sunny
Sunny
 23° /14° 2.5 mm 6
11 May Sunny
Sunny
 23° /14° 0.1 mm 6
12 May Sunny
Sunny
 23° /13° 4.9 mm 6
13 May Partly cloudy
Partly cloudy
 22° /14° 1.4 mm 6
14 May Sunny
Sunny
 22° /14° 0.9 mm 6
15 May Cloudy
Cloudy
 22° /14° 0.3 mm 6
16 May Sunny
Sunny
 24° /13° 0 mm 7
17 May Partly cloudy
Partly cloudy
 20° /13° 0 mm 3.6
18 May Sunny
Sunny
 21° /15° 0 mm 3.6
19 May Sunny
Sunny
 24° /14° 0 mm 4
20 May Sunny
Sunny
 24° /16° 0 mm 3.5
21 May Partly cloudy
Partly cloudy
 23° /16° 0.1 mm 3.5
22 May Sunny
Sunny
 21° /13° 0 mm 6
23 May Partly cloudy
Partly cloudy
 19° /12° 0 mm 5
24 May Partly cloudy
Partly cloudy
 22° /12° 0 mm 6
25 May Partly cloudy
Partly cloudy
 23° /16° 0 mm 6
26 May Moderate rain
Moderate rain
 19° /16° 16.1 mm 5
27 May Patchy rain possible
Patchy rain possible
 17° /14° 2.4 mm 5
28 May Patchy rain possible
Patchy rain possible
 17° /12° 2.2 mm 4
29 May Patchy rain possible
Patchy rain possible
 17° /15° 2.3 mm 5
30 May Patchy rain possible
Patchy rain possible
 18° /14° 2.6 mm 5
31 May Cloudy
Cloudy
 19° /12° 3.9 mm 5
Next
Important Notice
Our weather forecast for Western Australia in May 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 May - FAQ

What are the expected maximum and minimum temperatures in Western Australia during May?

Enjoy moderate daytime temperatures of up to 22° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Western Australia during May?

Moderate rainfall is anticipated in Western Australia during May, with a total of 66.7 mm spread over approximately 17 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Western Australia during May?

The average wind speed in Western Australia during May is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

May rainfall patterns in Western Australia

Explore the daily rainfall trends and prepare for Western Australias May weather 💧
Typically, Western Australia has 17 rainy days in May with a total of 66.7 mm of rainfall.

UV exposure in Western Australia during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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

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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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