Wednesday, 3 August 2022 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in July 2022: dry over large areas, warm days in the south, cool nights in the north

Rainfall in July was below average for Western Australia as a whole, but it was wetter than average in small areas of the northern Kimberley and monthly totals were close to average in parts of the South West Land Division and along the southern coast. After several years with warmer than average Julys, it was Western Australia's overall coolest July since 2014. Daytime temperatures were warmer than average in the southern half of the state, but nights were particularly cool in the north.

Near average to below average rainfall for most of the state

• For Western Australia as a whole, July rainfall was 46.1% below average.
• Rainfall was above average in parts of the far north Kimberley near the Northern Territory border, but monthly rainfall totals in the region were generally less than 10 mm.
• Rainfall was close to average in parts of the South West Land Division and along the southern coast, but July totals were generally less than average elsewhere in the state.
• Cold fronts and low pressure systems brought regular rainfall to south-west Western Australia during the month.
• A couple of sites had their highest July daily rainfall on record.
• A few sites had their highest total July rainfall for at least 20 years.
• The strongest recorded wind gust in July was 104 km/h at Cape Leeuwin on the 30th during the passage of a low pressure trough following a cold front that brought strong south-west to westerly winds and 10–30 mm of rain over much of the state's south-west.

Coolest July since 2014

• The overall mean temperature for Western Australia in July was 0.39 °C above the 1961–1990 average, but after several years of warmer than average Julys, it was the state's coolest since 2014.
• Daytime temperatures for July were generally warmer than average in the state's south.
• The mean maximum temperature for Western Australia was 1.37 °C above average, but after July maximum temperatures have been much warmer than average in recent years, it was the lowest since 2016.
• On the 20th and 21st, temperatures were more than 6 °C above average in parts of the Gascoyne and Pilbara districts and a couple of sites had their highest July temperature on record.
• On the 1st, several sites in the Kimberley had their coldest July day on record.
• North Island, off the coast near Geraldton, had its highest July mean daily maximum temperature on record.
• In the Kimberley, Wyndham Aero had its lowest July mean daily maximum temperature on record.
• Night-time temperatures for July were cooler than average in the state's north.
• The mean minimum temperature for Western Australia was 0.60 °C below average, the lowest since 2012.
• During the first half of the month, several sites in the north had their lowest July temperature on record.
• On the 9th, Rottnest Island recorded a minimum temperature of 17.8 °C, its warmest July night on record.
• Some sites in the state's north had their lowest July mean daily minimum temperature on record or their lowest July mean daily minimum temperature for at least 20 years.
• Mean temperatures were below average in the Kimberley and several sites had their lowest July mean temperature on record or their lowest July mean temperature for at least 20 years.

Extremes Maps Records Summaries Important notes the top

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Extremes in July 2022
Hottest day	35.3 °C at Yampi Sound (Defence) on the 26th
Warmest days on average	30.8 °C at Kalumburu
Coolest days on average	15.0 °C at Katanning
Coldest day	10.5 °C at Rocky Gully on the 30th
Coldest night	-5.0 °C at Eyre on the 6th
Coolest nights on average	3.6 °C at York
Warmest nights on average	20.7 °C at Troughton Island
Warmest night	23.6 °C at Troughton Island on the 28th
Warmest on average overall	24.4 °C at Troughton Island
Coolest on average overall	9.8 °C at Wandering
Wettest overall	277.6 mm at Mount William
Wettest day	70.0 mm at Northcliffe on the 15th
Strongest wind gust	104 km/h at Cape Leeuwin on the 30th

Extremes Maps Records Summaries Important notes the top

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Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Click on a map to show it full size in a pop-up window

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Record highest July daily rainfall
	New record (mm)		Old record		Years of record
Kununurra Checkpoint	5.2	on the 1st	5.0	on the 29th in 2010	26
Boyanup North	47.8	on the 26th	46.4	on the 24th in 2013	20

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Highest July total rainfall for at least 20 years
	Observed (mm)	Most recent higher		Average for July
Kununurra Aero	4.8	30.8	in 1986	1.4
Wyndham Aero	3.0	82.3	in 1968*	2.4
Bunbury	226.2	263.6	in 2000	145.5

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported

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Record highest July temperature
	New record (°C)		Old record		Years of record	Average for July
Denham	29.0	on the 20th	= 29.0	on the 4th in 2020	34	21.8
Barrow Island Airport	29.2	on the 21st	29.0	on the 8th in 2009	24	23.9

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Record lowest July daily maximum temperature
	New record (°C)		Old record		Years of record	Average for July
Kununurra Aero	19.3	on the 1st	23.2	on the 1st in 1999	36	30.8
Argyle Aerodrome	20.3	on the 1st	21.4	on the 13th in 2016	29	30.0
Kalumburu	25.5	on the 1st	26.0	on the 2nd in 1999	24	32.5
Wyndham Aero	21.3	on the 1st	24.7	on the 20th in 2004	22	32.2

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Record highest July mean daily maximum temperature
	New record (°C)	Old record		Years of record	Average for July
North Island	22.6	22.5	in 2020	21	21.2

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Record lowest July mean daily maximum temperature
	New record (°C)	Old record		Years of record	Average for July
Wyndham Aero	29.8	30.0	in 2006	21	32.2

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Record highest July daily minimum temperature
	New record (°C)		Old record		Years of record	Average for July
Rottnest Island	17.8	on the 9th	17.4	on the 2nd in 2018	33	12.4

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Record lowest July temperature
	New record (°C)		Old record		Years of record	Average for July
Telfer Aero	2.1	on the 5th	3.0	on the 1st in 1990	49	10.8
Kununurra Aero	6.0	on the 8th	6.4	on the 27th in 2013	37	14.8
Curtin Aero	6.1	on the 15th	6.2	on the 8th in 2012	31	15.5
Forrest	-2.6	on the 6th	-2.0	on the 21st in 1997	30	5.1
Fitzroy Crossing Aero	3.8	on the 5th	3.9	on the 4th in 2012	25	12.3
Kalumburu	5.0	on the 6th	= 5.0	on the 6th in 2002	24	13.9

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Record lowest July mean daily minimum temperature
	New record (°C)	Old record		Years of record	Average for July
Kununurra Aero	10.3	11.7	in 2008	36	14.8
Fitzroy Crossing Aero	8.2	8.4	in 2002	24	12.3

Lowest July mean daily minimum temperature for at least 20 years
	Observed (°C)	Most recent lower		Average for July
Broome Airport	10.4	10.3	in 1994	13.7
Argyle Aerodrome	13.2	13.1	in 2002	15.9
Derby Aero	11.6	11.2	in 2002	14.7
Warmun	10.1	9.8	in 2002	12.8

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Record lowest July mean temperature
	New record (°C)	Old record		Years of record	Average for July
Kununurra Aero	19.7	20.6	in 2007	35	22.8
Argyle Aerodrome	20.8	= 20.8	in 2006	28	23.0
Fitzroy Crossing Aero	19.1	19.6	in 2012	24	21.7
Kalumburu	20.8	20.9	in 2006	23	23.2
Wyndham Aero	21.1	21.6	in 2006	21	23.8

Lowest July mean temperature for at least 20 years
	Observed (°C)	Most recent lower		Average for July
Warmun	18.9	18.4	in 1977	21.2

Extremes Maps Records Summaries Important notes the top

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Summary statistics for July 2022
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for July 2022	Diff from average	Highest for July 2022		Mean for July 2022	Diff from average	Lowest for July 2022		Total for July 2022	Average for July	Rank of July 2022	Fraction of July average
North Kimberley (district 01)
Doongan	27.6	-2.3	31.8	31st	9.1	-1.7	4.0	6th	0	0.6	lowest	0%
Kalumburu	30.8	-1.7	34.7	31st	10.9	-3.0	5.0	6th	0	1.3	lowest	0%
Troughton Island	28.0	-0.4	30.0	31st	20.7	-1.6	18.6	5th	1.6	2.5	high	64%
Truscott	29.2	-1.8	33.0	26th	15.4	-3.0	10.7	6th	0	1.7	v low	0%
Wyndham Aero	29.8	-2.4	35.0	25th	12.3	-3.0	7.9	12th	3.0	2.4	v high	125%
East Kimberley (district 02)
Argyle Aerodrome	28.4	-1.6	33.8	25th	13.2	-2.7	8.9	13th	0	1.3	lowest	0%
Halls Creek Airport	26.8		31.4	31st	8.2		4.1	9th	0
Kununurra Aero	29.1	-1.7	34.4	25th	10.3	-4.5	6.0	8th	4.8	1.4	v high	343%
Warmun	28.0	-1.7	33.1	25th	10.1	-2.7	5.7	16th	2.0	5.0	high	40%
West Kimberley (district 03)
Broome Airport	28.7	-0.3	33.2	27th	10.4	-3.3	6.1	5th	0.4	6.4	average	6%
Curtin Aero	30.6	-0.6	34.8	26th	12.6	-2.9	6.1	15th	0	7.0	lowest	0%
Cygnet Bay	27.2	-1.0	31.0	23rd	15.1	+0.2	11.5	6th	0	10.0	lowest	0%
Derby Aero	30.2	-0.7	34.5	26th	11.6	-3.1	7.1	5th	0	7.3	lowest	0%
Fitzroy Crossing Aero	29.9	-1.2	34.6	26th	8.2	-4.1	3.8	5th	0	5.0	lowest	0%
Yampi Sound (Defence)	30.7		35.3	26th	8.4		3.3	5th	0
De Grey (district 04)
Bedout Island	24.5	-0.6	26.8	23rd	19.2	-0.5	17.6	16th
Karratha Aero	26.2	-0.3	29.9	21st	12.3	-1.6	8.1	7th	0	14.0	lowest	0%
Legendre Island	24.8	-0.1	26.9	22nd	17.9	-0.4	14.4	7th
Mandora	29.2	+0.1	33.9	27th	9.8	-2.7	5.5	5th	0.2	8.4	average	2%
Marble Bar	27.6	-0.1	31.8	27th	10.3	-2.0	5.1	7th	0	12.9	lowest	0%
Port Hedland Airport	27.8	+0.4	32.0	27th	11.6	-0.9	7.4	7th	0.2	10.2	low	2%
Roebourne Aero	27.3	-0.8	31.0	27th	9.9	-2.3	4.8	7th	0	10.2	lowest	0%
Fortescue (district 05)
Barrow Island Airport	23.8	-0.1	29.2	21st	17.0	-0.6	13.4	7th	1.2	13.3	average	9%
Karijini North	25.4		29.4	27th	10.4		4.7	7th	0
Learmonth Airport	24.8	+0.4	28.8	21st	10.3	-1.2	5.1	8th	1.0	21.2	low	5%
Mardie	28.0	+0.2	31.4	28th	10.9	-1.1	7.2	6th	0	13.6	lowest	0%
Onslow Airport	26.4	+0.8	29.5	19th	13.4	+0.3	9.4	7th	0.6	18.9	low	3%
Thevenard Island	25.4	+0.4	27.6	19th	17.4	0.0	12.9	7th	1.0	15.9	low	6%
West Gascoyne (district 06)
Carnarvon Airport	24.6	+2.1	30.2	20th	9.9	-1.0	4.1	4th	10.6	42.2	low	25%
Denham	23.1	+1.3	29.0	20th	12.1	-0.7	8.5	25th	18.6	39.0	low	48%
Emu Creek Station	27.3	+1.8	30.5	20th	10.8	-0.6	6.2	3rd	1.6	21.3	average	8%
Shark Bay Airport	23.6	+0.8	28.7	20th	10.2	-0.5	5.0	9th	13.8	29.6	low	47%
East Gascoyne (district 07)
Newman Aero	23.6	+0.4	28.7	21st	5.7	-0.9	-1.3	5th	0	13.8	lowest	0%
Paraburdoo Aero	25.5	+0.5	31.1	28th	9.4	-0.5	1.4	5th	0	13.1	lowest	0%
Murchison (district 07A)
Meekatharra Airport	21.0	+1.8	25.3	20th	8.5	+1.0	3.2	5th	13.0	20.3	average	64%
Mount Magnet Aero	20.3	+1.3	25.5	17th	7.6	+0.5	3.0	25th	13.6	26.3	average	52%
Paynes Find	20.2	+1.6	25.2	14th	4.8	-0.7	-1.3	4th	17.5	34.9	low	50%
North Coast (district 08)
Dalwallinu	18.3	+1.3	24.1	9th	5.9	-0.1	0.4	31st	45.8	50.4	average	91%
Geraldton Airport	21.3	+0.8	25.7	8th	9.1	-0.5	2.9	4th	88.0	70.3	average	125%
Kalbarri	23.3	+1.4	29.4	20th	10.7	+0.9	6.1	26th	52.3	69.9	average	75%
Morawa Airport	20.1	+1.3	25.4	9th	6.3	+0.1	1.3	26th	40.6	45.5	average	89%
Mullewa	20.8	+1.9	26.6	9th	7.8	+0.7	2.6	5th	49.4	59.0	average	84%
North Island	22.6	+1.4	25.6	9th	16.1	+0.7	6.7	26th	73.0	66.6	average	110%
Wongan Hills	18.5	+1.4	23.6	9th	6.9	+0.3	2.9	12th	60.0	69.3	average	87%
Central Coast (district 09)
Badgingarra Research Stn	18.3	+0.7	23.4	8th	7.7	+0.4	3.9	31st	95.6	102.5	average	93%
Bickley	15.5	+0.4	20.1	8th	7.8	+0.5	4.0	4th	186.8	219.1	average	85%
Garden Island HSF	18.6	+0.7	22.1	8th	11.7	+0.4	8.7	13th	172.6	125.4	high	138%
Gingin Aero	19.4	+1.0	24.5	8th	6.9	+0.4	0.3	3rd	100.0	127.9	average	78%
Jandakot Aero	18.6	+0.6	23.5	8th	8.2	+1.1	2.2	12th	159.0	174.4	average	91%
Jurien Bay	21.0	+1.4	24.3	27th	10.6	+1.2	2.4	3rd	90.4	111.2	average	81%
Millendon (Swan Valley)	18.8		22.2	9th	7.7		1.5	3rd	123.4
Pearce RAAF	19.0	+1.1	23.1	9th	9.0	+0.6	3.6	3rd	123.0	134.3	average	92%
Perth Airport	19.0	+1.0	23.0	8th	9.3	+1.2	5.1	13th	120.2	155.2	low	77%
Perth Metro	19.0	+0.5	23.6	8th	8.7	+0.7	2.5	3rd	157.0	147.1	average	107%
Rottnest Island	18.7	+0.9	22.4	8th	12.8	+0.4	9.4	7th	109.6	112.7	average	97%
Swanbourne	19.0	+0.6	23.5	8th	10.4	+0.5	6.4	12th	172.8	152.7	average	113%
South Coast (district 09A)
Albany	17.2	+1.4	22.0	28th	8.6	+0.4	4.6	1st	92.4	142.7	low	65%
Albany Airport	17.0	+0.5	21.1	28th	6.5	-1.2	0.4	3rd	79.0	108.4	low	73%
Bridgetown	16.4	+0.6	20.5	8th	5.0	+0.3	-1.6	4th	139.2	131.2	average	106%
Bunbury	17.7	+0.4	20.5	28th	7.6	+0.4	0.8	2nd	226.2	145.5	high	155%
Busselton Aero	17.4	+0.6	19.9	28th	6.8	-0.2	1.2	6th	158.8	134.8	average	118%
Cape Leeuwin	17.9	+1.5	21.9	8th	11.5	+0.2	8.4	19th	173.2	179.2	average	97%
Cape Naturaliste	17.9	+1.5	21.9	8th	10.7	+0.2	6.5	1st	131.8	159.0	average	83%
Collie East	16.6	+0.3	21.7	8th	4.1	-0.1	-3.1	4th	146.0	134.7	average	108%
Dwellingup	16.0	+0.9	21.2	8th	5.6	+0.1	1.1	1st	234.4	234.9	average	100%
Esperance	18.1	+0.9	22.5	29th	8.6	+0.2	4.3	4th	112.2	96.0	high	117%
Esperance Aero	16.8	+0.3	20.6	29th	7.8	+0.2	3.5	31st	81.0	76.9	average	105%
Hopetoun North	18.2	+0.2	23.2	9th	8.0	+0.2	0.9	4th	50.2	65.6	average	77%
Jarrahwood	17.4	+0.9	20.2	15th	4.4	-0.5	-2.0	2nd	139.2	179.0	average	78%
Mandurah	18.0	+0.5	20.5	13th	11.1	+0.3	7.5	1st	113.2	116.4	average	97%
Manjimup	15.8	+1.4	19.5	8th	6.6	+0.1	3.1	6th	140.2	174.0	average	81%
North Walpole	16.8	+0.8	20.8	28th	8.2	-0.8	4.0	4th	119.2	181.8	v low	66%
Rocky Gully	15.4	+0.7	18.2	28th	6.1	-0.4	0.3	6th	97.4	107.3	average	91%
Shannon	15.4	+0.6	18.5	28th	6.2	-0.5	1.1	3rd	156.0	182.0	average	86%
Windy Harbour	17.3	+0.5	21.2	28th	6.7	-1.9	1.0	31st	155.3	196.6	low	79%
Witchcliffe West	17.0		21.1	8th	8.4		2.1	6th	202.6
North Central (district 10)
Bencubbin	17.6	+1.2	22.6	9th	6.2	+0.2	2.0	12th	33.5	45.1	average	74%
Cunderdin Airfield	18.0	+0.9	23.9	9th	4.8	-0.1	-0.4	12th	55.4	51.2	average	108%
Merredin	17.6	+1.2	23.0	9th	5.7	+0.1	-0.1	31st	34.5	50.1	low	69%
Northam	17.6	+0.7	22.5	28th	5.9	+0.5	2.5	2nd	35.3	81.7	low	43%
York	17.3	+0.2	22.0	9th	3.6	-0.3	-2.0	4th	47.2	72.6	low	65%
South Central (district 10A)
Beverley	17.4	+0.5	22.0	8th	5.0	-0.2	-0.2	4th	74.8	77.2	average	97%
Brookton	16.3	+0.2	20.2	9th	4.4	-0.2	-0.8	4th	52.2	84.4	low	62%
Hyden	17.6	+1.1	22.0	13th	4.8	+0.1	0.2	31st	41.6	47.6	average	87%
Jacup	16.0	+0.3	19.6	9th	5.6	-0.1	1.8	13th	61.8	51.7	high	120%
Katanning	15.0	+0.3	18.7	8th	5.5	-0.5	-0.8	1st	12.0	62.3	lowest	19%
Lake Grace	15.8	+0.2	20.2	8th	5.5	+0.1	0.3	2nd	52.6	38.6	high	136%
Newdegate Research Station	15.7	+0.4	20.5	9th	4.1	-0.2	-2.3	3rd	45.2	48.2	average	94%
Ravensthorpe	16.9	+0.5	21.4	9th	6.8	0.0	1.5	2nd	47.2	47.0	average	100%
Wagin	15.7	+0.3	20.0	8th	5.1	-0.5	-0.3	8th	54.6	70.0	average	78%
Wandering	15.8	0.0	19.9	9th	3.7	-0.5	-2.2	3rd	94.8	98.9	average	96%
Eucla (district 11)
Eucla	18.7	+0.7	25.6	29th	7.6	+0.5	0.4	6th	20.8	24.8	average	84%
Eyre	19.1	+0.8	24.3	14th	3.8	-1.8	-5.0	6th	28.2	34.2	average	82%
Forrest	19.3	+0.4	26.1	29th	4.7	-0.4	-2.6	6th	6.8	13.9	average	49%
Red Rocks Point	18.5	-0.3	25.0	29th	8.5	+0.9	2.6	26th	24.2	32.1	average	75%
South East (district 12)
Kalgoorlie-Boulder Airport	18.3	+1.5	22.4	28th	6.1	+1.0	0.2	25th	16.2	24.1	average	67%
Laverton Aero	19.6	+1.0	26.5	21st	6.7	+0.8	-0.4	5th	9.0	14.9	average	60%
Leinster Aero	20.1	+1.1	27.1	21st	6.4	+0.2	0.7	6th	9.4	15.6	average	60%
Leonora Aero	19.9	+0.6	27.0	21st	6.4	+0.4	-0.6	6th	19.0	16.0	average	119%
Munglinup West	16.9	+0.1	22.9	9th	6.9	+0.2	2.7	25th	51.0	39.8	high	128%
Norseman Aero	18.0	+0.7	23.3	28th	4.1	0.0	-2.7	3rd	13.6	21.1	average	64%
Salmon Gums Res.Stn.	17.2	+1.1	21.7	28th	4.9	+0.2	-4.0	3rd	28.4	36.4	average	78%
Southern Cross Airfield	17.9	+1.2	23.3	9th	4.0	+0.3	-1.5	4th	28.8	34.9	average	83%
North East (district 13)
Carnegie	21.8	+0.2	26.6	21st	5.6	-0.5	-1.5	5th	0	11.3	lowest	0%
Giles Meteorological Office	21.5	+1.3	28.3	23rd	5.7	-1.2	-1.2	4th	0	10.3	lowest	0%
Telfer Aero	25.9	+0.3	30.4	22nd	9.2	-1.6	2.1	5th	0	11.0	lowest	0%
Warburton Airfield	21.8	+0.9	27.5	23rd	6.3	+0.5	-1.2	6th	1.2	11.6	low	10%
Wiluna Aero	21.0		26.8	21st	5.4		-1.3	5th	7.8
Offshore Islands (district 200)
Adele Island	26.7		29.0	22nd	22.5		18.9	6th
Browse Island	27.2		29.0	29th	24.2		21.2	6th
Rowley Shoals	25.7		28.0	22nd	23.7		21.7	6th
Varanus Island	24.2	-0.2	28.1	21st	19.9	0.0	18.4	10th	0	11.7	lowest	0%

Extremes Maps Records Summaries Important notes the top

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