Monday, 2 September 2019 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in August 2019: below average rainfall in the west

Rainfall in August 2019 was below to very much below average in western parts of Western Australia. Mean maximum temperatures were above average in the west and south and along the Kimberley coast. The mean minimum temperatures were near average for much of WA but well above average along the Pilbara coast and below average in parts of the State's northeast.

Below average rainfall in the west

• Rainfall in August 2019 was 39% below average for WA, the driest August since 2014
• Year to date rainfall was the third-driest year to date (January to August) on record, and driest since 1936 for WA
• Rainfall in August 2019 was below average, the driest August since 2014 for the South West Land Division (SWLD)
• Year to date rainfall was the fourth-driest year to date on record, and driest since 2010 for the SWLD
• Several locations along the Gascoyne coast and the Central West had their driest August on record or driest August for at least 20 years

Above average daytime temperature in the western WA

• The mean maximum temperature in August 2019 was 1.52 °C above average for WA; for the SWLD, the mean maximum temperature was 1.79 °C above average, and the seventh-warmest August on record
• The mean maximum temperature for the January to August period was 2.04 °C above average, which was the warmest year to date on record for WA; previous record was 1.61 °C on January to August 2005
• The mean minimum temperature in August 2019 was 0.23 °C above average for WA
• The mean minimum temperature for January to August was 0.56 °C above average for WA
• Many sites near the west coast, especially around Perth had their highest August temperature on record on the 27th or 28th, covering places from Carnavon Airport down to the southwest corner at Cape Leeuwin, as a result of warm northeasterly winds
• Geraldton Airport recorded 32.0 °C on the 28th, which was Geraldton's highest August temperature on record with records commenced in 1941; previous record was 31.7 °C on 10 August 2014 at Geraldton Airport

Small hail and severe wind gusts

• A strong cold front produced thunderstorms over the southwest WA on the 5th. Small hail was reported in the Perth northwestern suburbs
• A strong cold front followed by a cold southwesterly airmass produced severe wind gusts of 100 km/h or higher along the Lower West and Southwest coasts on the 16th and 17th. A layer of snow fell on Bluff Knoll in the Stirling Ranges on the 17th. The State Fire and Emergency Services received more than 20 calls for help

Extremes Maps Records Summaries Important notes the top

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Extremes in August 2019
Hottest day	37.9 °C at Kalumburu on the 19th
Warmest days on average	34.6 °C at Kalumburu
Coolest days on average	16.1 °C at Katanning
Coldest day	10.0 °C at Munglinup West on the 17th
Coldest night	-4.5 °C at Eyre on the 27th
Coolest nights on average	3.1 °C at York
Warmest nights on average	22.4 °C at Troughton Island
Warmest night	24.7 °C at Troughton Island on the 12th
Warmest on average overall	25.8 °C at Troughton Island
Coolest on average overall	10.3 °C at Wandering
Wettest overall	212.2 mm at Bickley
Driest overall	0 mm at several locations
Wettest day	71.4 mm at Worsley Downs on the 30th
Strongest wind gust	107 km/h at Ocean Reef on the 16th

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 August daily rainfall
	New record (mm)		Old record		Years of record
Tjukayirla	22.0	on the 16th	13.8	on the 26th in 2017	20

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Highest August total rainfall for at least 20 years
	Observed (mm)	Most recent higher		Average for August
Chesalon	84.4	97.4	in 1992	45.2
Pingelly	86.2	112.8	in 1998	62.3

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Record lowest August total rainfall
	New record (mm)	Old record		Years of record	Average for August
Kokardine	3.0	4.6	in 1925	111	41.7
Tenindewa Bindu	1.0	7.2	in 2008	104	39.6
Arundel	3.4	19.8	in 1925	102	74.0
Byron	1.6	6.4	in 1989	50	37.0
Useless Loop	2.8	4.4	in 1989	38	24.5
Nalyerlup	7.0	14.6	in 2012	36	51.6
Morawa Airport	11.4	= 11.4	in 2007	22	33.9

Lowest August total rainfall for at least 20 years
	Observed (mm)	Most recent lower		Average for August
Wialki South	13.2	8.5	in 1969*	35.9
Subiaco Treatment Plant	58.6	0.0	in 1984*	106.1
Kondut	19.6	11.6	in 1989*	47.1
Allan Rocks	16.6	=16.6	in 1990*	42.8
Cue	1.6	0.7	in 1995	16.7
Latham	16.0	13.4	in 1995*	38.3
Mount Gibson	5.7	4.1	in 1995*	35.4

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

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Record highest August temperature
	New record (°C)		Old record		Years of record	Average for August
Cape Leeuwin	25.5	on the 28th	24.7	on the 6th in 2014	113	16.5
Donnybrook	27.0	on the 28th	26.7	on the 26th in 1949	110	17.3
Perth Airport	29.9	on the 28th	28.3	on the 26th in 1998	76	18.6
Carnarvon Airport	33.6	on the 27th	= 33.6	on the 12th in 2014	73	23.1
Dwellingup	27.1	on the 28th	24.9	on the 20th in 2018	60	15.7
Karnet	27.0	on the 28th	25.0	on the 15th in 2015	54	15.9
Badgingarra Research Stn	29.9	on the 28th	27.7	on the 12th in 1976	53	18.2
Brookton	26.8	on the 28th	26.7	on the 29th in 2006	52	16.8
Lancelin	31.0	on the 28th	29.0	on the 12th in 1976	51	19.4
Jurien Bay	30.0	on the 28th	28.2	on the 10th in 2014	50	20.0
Pingelly	26.4	on the 28th	26.1	on the 29th in 2006	49	16.1
Goomalling	29.7	on the 28th	29.5	on the 29th in 2006	43	18.2
Denham	31.5	on the 27th	= 31.5	on the 13th in 2014	31	22.5
Jandakot Aero	29.4	on the 28th	27.0	on the 15th in 2015	30	18.7
Bickley	26.6	on the 28th	24.7	on the 25th in 1994	26	16.0
Perth Metro	30.0	on the 28th	27.2	on the 26th in 1998	26	19.0
Swanbourne	30.2	on the 28th	28.0	on the 15th in 2015	26	18.9
Gingin Aero	30.0	on the 28th	28.0	on the 29th in 2006	24	19.1
York	28.5	on the 28th	27.5	on the 29th in 2006	24	17.9
Kalumburu	37.9	on the 19th	= 37.9	on the 20th in 2017	21	33.6

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Record highest August daily minimum temperature
	New record (°C)		Old record		Years of record	Average for August
Balladonia	15.8	on the 30th	15.5	on the 15th in 1976	55	5.3
Goomalling	14.6	on the 29th	= 14.6	on the 3rd in 1983	43	6.3
Gascoyne Junction	22.2	on the 30th	19.0	on the 12th in 2010	42	10.0

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Highest August mean daily minimum temperature for at least 20 years
	Observed (°C)	Most recent higher		Average for August
Pardoo Station	15.1	15.5	in 1998	13.3

Extremes Maps Records Summaries Important notes the top

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Summary statistics for August 2019
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for August 2019	Diff from average	Highest for August 2019		Mean for August 2019	Diff from average	Lowest for August 2019		Total for August 2019	Average for August	Rank of August 2019	Fraction of August average
North Kimberley (district 01)
Doongan	31.4	-0.2	34.9	25th	11.4	-0.8	6.0	30th	0	0.8	lowest	0%
Kalumburu	34.6	+1.0	37.9	19th	14.6	0.0	8.8	15th	0	0.3	lowest	0%
Mount Elizabeth			33.0	25th	8.1	-0.9	4.0	30th	0	1.9	lowest	0%
Troughton Island	29.2	+0.3	31.3	19th	22.4	-0.2	20.0	16th	0.2	0.5	average	40%
Truscott	32.0	+0.3	36.1	19th	18.5	-0.4	15.1	15th	0	0.4	v low	0%
Wyndham Aero	33.7	-0.2	36.2	25th	15.4	-0.7	8.6	15th	0	0	lowest
East Kimberley (district 02)
Argyle Aerodrome	31.8	-0.3	34.8	17th	17.4	+0.1	12.1	14th	0	0.3	lowest	0%
Halls Creek Airport	29.6		33.0	25th	12.6		6.2	15th	0
Kununurra Aero	32.6	-0.1	35.4	25th	13.8	-1.7	7.6	15th	0	0.1	lowest	0%
Warmun	31.6	-0.6	35.0	17th	14.8	+0.1	8.0	15th	0	1.3	lowest	0%
West Kimberley (district 03)
Broome Airport	31.9	+1.6	36.1	25th	14.7	-0.2	10.8	25th	0.2	2.2	low	9%
Curtin Aero	33.2	+0.1	36.2	25th	15.8	+0.1	10.4	6th	0	2.3	lowest	0%
Cygnet Bay	30.1	+0.4	33.5	28th	15.8	+1.1	10.8	24th	0	0.9	lowest	0%
Derby Aero	32.9	+0.3	35.6	25th	14.9	-0.9	10.7	23rd	0	1.1	lowest	0%
Fitzroy Crossing Aero	32.8	-0.5	36.3	26th	13.2	-0.4	9.2	30th	0	2.9	lowest	0%
De Grey (district 04)
Bedout Island	26.2	-0.2	28.6	29th	20.0	-0.1	18.2	19th
Karratha Aero	28.4	+0.1	31.6	31st	15.6	+1.3	11.2	5th	0	4.0	lowest	0%
Legendre Island	25.1		28.1	23rd	18.9		16.9	19th
Mandora	31.8	+0.9	35.3	1st	12.7	-0.5	7.2	4th	0	2.5	lowest	0%
Marble Bar	30.2	0.0	35.7	28th	13.2	+0.2	8.7	23rd	0	0.4	v low	0%
Pardoo Station	30.6	+0.5	34.0	31st	15.1	+1.8	11.0	10th	0	4.6	lowest	0%
Port Hedland Airport	30.0	+0.7	33.2	31st	13.7	+0.5	9.7	22nd	0.8	4.7	average	17%
Roebourne Aero	30.4	+0.1	34.6	30th	13.3	+0.9	7.5	5th	0	0.7	v low	0%
Fortescue (district 05)
Barrow Island Airport	25.0	-0.1	28.6	29th	17.8	+0.1	13.6	10th	1.0	2.5	average	40%
Karijini North	28.0		33.1	29th	13.4		6.0	9th	1.2
Learmonth Airport	27.0	+0.6	29.3	29th	11.7	-0.4	6.4	11th	6.0	11.3	average	53%
Mardie	30.1	+0.5	32.9	31st	13.9	+1.5	10.3	16th	1.4	7.0	average	20%
Onslow Airport	28.1	+0.8	31.7	31st	14.8	+1.2	11.2	10th	0.4	8.3	low	5%
Thevenard Island	26.2	+0.2	28.4	1st	17.9	+0.5	13.9	11th	0.4	2.8	low	14%
Wittenoom	27.8	+0.9	33.3	29th	14.0	+0.8	9.3	9th	0	7.7	lowest	0%
West Gascoyne (district 06)
Carnarvon Airport	24.9	+1.8	33.6	27th	11.3	-0.3	6.0	20th	13.2	17.4	average	76%
Denham	23.5	+1.0	31.5	27th	13.1	-0.2	13.0	1st	13.4	21.8	average	61%
Murchison	24.0	+0.9	30.6	28th	7.0	-0.1	2.0	21st	9.0	18.5	average	49%
Shark Bay Airport	25.0	+0.9	32.2	27th	11.0	-0.1	7.4	12th	6.2	20.0	low	31%
East Gascoyne (district 07)
Newman Aero	26.1	0.0	32.3	29th	8.8	+0.9	2.4	19th	3.6	6.5	average	55%
Paraburdoo Aero	28.0	+0.4	34.1	29th	12.2	+1.3	5.0	17th	0	9.9	lowest	0%
Murchison (district 07A)
Meekatharra Airport	23.5	+1.9	30.2	28th	10.2	+1.6	3.6	16th	2.0	10.7	low	19%
Mount Magnet Aero	22.1	+0.8	30.7	28th	8.5	+0.5	2.6	19th	7.8	16.6	average	47%
Paynes Find	21.8	+1.7	31.1	28th	6.1	+0.1	0.2	8th	14.8	27.2	average	54%
North Coast (district 08)
Dalwallinu	19.7	+1.5	29.9	28th	5.2	-0.9	0.6	16th	26.4	39.8	low	66%
Geraldton Airport	22.4		32.0	28th	8.7		4.1	25th	44.2
Kalbarri	23.8	+1.3	31.5	27th	10.3	+0.4	4.1	8th	28.6	47.3	low	60%
Morawa Airport	21.8	+1.6	31.6	28th	6.1	-0.4	0.9	16th	11.4	33.9	lowest	34%
Mullewa	22.3	+2.1	31.3	28th	7.8	+0.6	2.2	16th	27.4	42.1	average	65%
North Island	22.2	+0.6	25.6	28th	15.3	0.0	8.0	12th	17.0	34.8	low	49%
Wongan Hills	19.6	+1.7	29.8	28th	6.9	+0.2	1.8	24th	48.0	52.0	average	92%
Central Coast (district 09)
Badgingarra Research Stn	19.9	+1.7	29.9	28th	7.8	+0.7	3.3	18th	52.4	83.3	low	63%
Bickley	16.9	+0.9	26.6	28th	7.4	-0.2	3.8	24th	212.2	176.8	high	120%
Garden Island HSF	19.0	+0.9	25.9	28th	11.2	0.0	7.4	19th	94.0	95.8	average	98%
Gingin Aero	20.3	+1.2	30.0	28th	6.3	-0.3	0.4	18th	106.0	109.7	average	97%
Jandakot Aero	19.9	+1.2	29.4	28th	7.1	-0.1	1.3	24th	132.4	129.1	average	103%
Jurien Bay	21.9	+1.9	30.0	28th	9.2	-0.2	2.6	22nd	69.8	80.4	average	87%
Lancelin	21.6	+2.2	31.0	28th	9.3	-0.6	5.2	24th	123.3	91.8	high	134%
Millendon (Swan Valley)	20.0		28.5	28th	7.4		2.2	18th	119.8
Pearce RAAF	20.0	+1.6	29.0	28th	8.4	+0.2	2.8	18th	102.4	106.1	average	97%
Perth Airport	20.2	+1.6	29.9	28th	7.8	-0.3	1.9	18th	115.8	118.9	average	97%
Perth Metro	20.2	+1.2	30.0	28th	7.8	-0.5	3.1	18th	114.2	125.5	average	91%
Rottnest Island	18.7	+0.8	24.1	12th	12.5	+0.1	9.3	24th	86.4	87.9	average	98%
Swanbourne	20.0	+1.1	30.2	28th	10.3	+0.2	5.9	24th	121.6	119.2	average	102%
South Coast (district 09A)
Albany	17.9	+1.6	25.5	29th	9.6	+1.2	6.0	26th	119.1	126.2	average	94%
Albany Airport	17.9		25.1	29th	7.4		2.2	21st	139.2
Bridgetown	17.3	+0.9	22.8	28th	4.3	-0.8	-0.5	21st	119.6	122.4	average	98%
Bunbury	18.9	+1.3	23.8	28th	6.4	-1.3	1.2	24th	91.8	120.2	low	76%
Busselton Aero	18.0	+0.7	21.7	28th	6.5	-0.8	1.1	24th	97.6	108.4	average	90%
Cape Leeuwin	18.3	+1.8	25.5	28th	11.9	+0.7	9.7	23rd	125.6	135.9	average	92%
Cape Naturaliste	18.1	+1.6	21.7	29th	10.2	+0.1	5.9	24th	98.2	112.6	average	87%
Collie East	18.4	+1.3	27.2	28th	3.2	-1.6	-0.5	22nd	70.4	118.0	low	60%
Donnybrook	19.1	+1.8	27.0	28th			3.0	7th	140.8	148.9	average	95%
Dwellingup	17.8	+2.1	27.1	28th	5.5	0.0	1.2	19th	161.0	194.5	average	83%
Esperance	18.6	+0.6	31.1	29th	8.6	0.0	3.3	26th	100.4	84.6	average	119%
Esperance Aero	17.9	+0.5	29.8	29th	7.6	-0.1	4.8	27th	92.8	71.5	high	130%
Hopetoun North	18.8	+0.1	29.3	29th	7.9	+0.1	2.8	27th	76.4	56.0	high	136%
Jarrahwood	18.7	+1.9	24.0	28th	4.3	-0.9	-1.2	24th	120.2	147.2	low	82%
Mandurah	18.7	+0.7	23.9	28th	10.8	-0.2	7.2	7th	98.2	97.7	average	101%
Manjimup	17.0	+1.9	22.4	28th	6.9	+0.4	2.2	24th	128.8	145.4	average	89%
North Walpole	17.7	+1.1	24.2	28th	9.4	+0.3	5.7	27th	173.4	157.2	average	110%
Rocky Gully	16.5	+1.1	22.2	22nd	6.9	+0.1	3.4	26th	117.6	91.1	high	129%
Shannon	16.1	+0.7	22.0	28th	6.4	-0.6	1.8	26th	148.0	136.1	average	109%
Witchcliffe	17.4	+0.7	21.7	28th	7.6	-0.6	2.7	26th	119.6	157.4	low	76%
North Central (district 10)
Bencubbin	18.9	+1.2	28.4	28th			3.5	27th	28.7	37.5	average	77%
Cunderdin Airfield	19.1	+1.2	29.0	28th	4.2	-0.3	-0.3	18th	32.2	41.8	low	77%
Merredin	18.6	+1.2	28.0	28th	6.4	+0.9	0.0	18th	51.2	39.3	high	130%
Northam	19.2	+1.2	28.2	28th	4.4	-1.2	0.2	22nd	46.4	60.9	average	76%
York	19.2	+1.3	28.5	28th	3.1	-0.9	-0.5	18th	65.5	58.7	average	112%
South Central (district 10A)
Beverley	18.5	+0.7	24.4	22nd	4.8	-0.3	0.6	18th	79.8	59.0	high	135%
Brookton	17.9	+1.1	26.8	28th	4.3	-0.3	-0.2	18th	78.6	62.4	high	126%
Corrigin	17.8	+1.4	27.1	28th	4.5	-0.3	-0.4	1st	49.6	47.8	average	104%
Hyden	19.2	+1.6	28.5	28th	4.7	0.0	0.0	19th	42.0	41.3	average	102%
Jacup	17.7	+0.9	27.2	28th	5.2	-0.5	2.1	26th	48.8	51.8	average	94%
Katanning	16.1	+0.7	23.6	28th	5.5	-0.5	2.0	19th	59.0	59.9	average	98%
Lake Grace	17.5	+0.7	26.6	28th	5.3	-0.4	1.1	19th	46.0	37.6	average	122%
Narembeen	18.7	+1.0	28.1	28th	5.4	0.0	0.8	8th	51.7	42.5	high	122%
Narrogin	17.0	+1.7	25.5	28th	5.1	-0.1	0.0	17th	66.8	67.9	average	98%
Newdegate Research Station	17.0	+0.7	25.7	28th	3.7	-0.6	-0.5	26th	58.2	44.9	high	130%
Pingelly	17.3	+1.2	26.4	28th	6.0	+0.3	1.6	18th	86.2	62.3	high	138%
Ravensthorpe	18.3	+1.0	27.0	28th			3.0	26th	69.2	45.3	high	153%
Wagin	17.2	+1.1	25.1	28th	5.5	-0.2	1.0	26th	63.0	56.9	average	111%
Wandering	17.3	+0.8	24.9	28th	3.2	-0.9	-0.5	20th	104.4	94.7	average	110%
Eucla (district 11)
Eucla	19.7	+0.5	33.5	30th	7.7	+0.2	1.1	20th	29.8	26.4	average	113%
Eyre	20.8	+1.3	31.8	30th	4.0	-2.0	-4.5	27th	36.0	29.7	average	121%
Forrest	21.0	0.0	32.2	30th	5.0	-0.9	0.2	3rd	5.0	13.4	low	37%
Red Rocks Point	19.4	-0.1	31.7	30th	7.9	-0.3	3.2	28th	1.8	39.9	v low	5%
South East (district 12)
Bulga Downs	22.3	+0.3	30.8	28th	6.6	+0.6	0.8	9th
Kalgoorlie-Boulder Airport	19.6	+0.9	30.4	29th	7.2	+1.5	1.8	8th	20.6	21.3	average	97%
Laverton Aero	21.7	+0.9	31.0	29th	8.1	+0.9	-0.1	8th	2.0	9.9	average	20%
Leinster Aero	21.9	+0.2	30.4	28th	7.4	-0.2	0.8	18th	7.2	8.8	average	82%
Leonora Aero	22.1	+0.4	30.7	29th	7.5	+0.1	0.9	18th	6.2	10.9	average	57%
Munglinup West	18.4	+0.4	30.5	29th	6.7	-0.1	3.1	25th	73.0	47.2	high	155%
Norseman Aero	19.2	-0.1	31.4	29th	4.0	-0.4	-2.2	19th	36.2	23.7	high	153%
Salmon Gums Res.Stn.	18.0	+0.6	30.6	29th	4.0	-0.7	-3.5	26th	43.2	34.3	high	126%
Southern Cross Airfield	19.4	+0.9	28.3	28th	4.5	+0.7	-0.9	20th	20.6	30.5	average	68%
North East (district 13)
Carnegie	24.3	+0.2	31.6	30th	7.2	-0.1	-0.6	4th	3.2	6.6	average	48%
Giles Meteorological Office	23.0	+0.2	29.6	31st	7.9	-0.8	2.3	3rd	0	9.3	lowest	0%
Telfer Aero	28.5	+0.1	34.5	28th	12.4	-0.1	8.1	3rd	0.8	4.6	high	17%
Warburton Airfield	23.6	+0.3	32.0	31st	8.0	+0.8	0.3	9th	3.2	8.7	average	37%
Wiluna	22.5	+0.6	27.5	13th	6.8	0.0	1.0	8th	9.4	9.9	average	95%
Wiluna Aero	23.3		31.2	28th	6.8		0.6	8th	1.0
Offshore Islands (district 200)
Adele Island	28.2		29.6	29th	23.4		22.3	4th
Browse Island	28.1		29.3	29th	24.8		23.4	31st
Rowley Shoals	25.3		26.9	15th	23.1		21.9	4th

Extremes Maps Records Summaries Important notes the top

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