Wednesday, 1 February 2017 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in January 2017: Wet overall, cool days in the north and east

January 2017 was the third-wettest for Western Australia; the wettest January since 2006. Throughout the month, tropical low pressure systems with embedded thunderstorms brought persistent and locally heavy rainfall to northern and inland WA. Across the south, a cloudband towards the end of the month contributed significantly to above average rainfall totals near the west coast and in the northern half of the South West Land Division. Daytime temperatures were below average in the north and east, with below average night-time temperatures in the southwest of the State.

Above average rainfall across most of Western Australia

• January rainfall across WA was 129% above average, the third highest January rainfall, behind 1942 and the record set in 2006
• Most of the State recorded above average rainfall, although parts of the southern South West Land Division recorded below average rainfall
• Highest on record monthly rainfall occurred across the east Kimberley, and parts of the Northern and Southern Interior, east Pilbara and northern Goldfields
• Record high monthly rainfall totals were also recorded in the southwest Gascoyne, Central West, and Central Wheat Belt as a result of a significant cloudband late in the month
• Several sites in the east Kimberley recorded their highest January daily rainfall on record on the 4th as a tropical low moved through the region, whilst significant thunderstorm activity brought record high daily totals to the northern Goldfields on the 17th, and east Pilbara on the 19th, and another tropical low brought further record high daily totals to parts of the east Kimberley on the 24th and 25th
• A number of sites across the southwest Gascoyne and northern South West Land Division registered record high daily rainfall totals between the 29th and 31st as a result of the cloudband in the region
• Throughout the month, minor flooding occurred in the Kimberley District and along the Fitzroy, Ord and De Grey Rivers, across the Interior Districts, and along the Irwin River in the Central West

Cool days over the north and east, cool nights in the southwest

• Below average daytime temperatures were recorded across most of the north and east, with 42% of Western Australia recording temperatures in the lowest decile (the bottom 10% of records)
• Above average daytime temperatures were recorded across parts of the southwest
• Averaged across WA as a whole, maximum temperatures were below average and the lowest for five years, since 2012
• Telfer Aero recorded its lowest January mean daily maximum temperature on record
• A number of sites in the Lower West and adjacent parts recorded their coldest January day on record on the 30th as a result of a persistent cloudband and rainfall over the region
• Night-time temperatures were below average in the eastern Pilbara and adjoining parts of the Interior districts as well as across the Lower Southwest (southwest of a line between Jurien Bay and Bremer Bay), which recorded its coolest January since 1969
• Minima were above average throughout eastern parts of southern Western Australia, through inland parts to the northwest coast and in the northern Kimberley
• A few sites in southern WA recorded their lowest January temperature on record, with Warmun in the north equalling its record
• Rocky Gully and York recorded their lowest January mean daily minimum temperature on record, and few sites in the southwest recorded their coolest January in at least 20 years.

Further information

Media

media@bom.gov.au (03) 9669 4057

Enquiries

helpdesk.climate@bom.gov.au

Extremes Maps Records Summaries Important notes the top

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Extremes in January 2017
Hottest day	46.6 °C at Gascoyne Junction on the 4th
Warmest days on average	40.8 °C at Emu Creek Station
Coolest days on average	22.1 °C at Albany
Coldest day	17.1 °C at Brookton on the 30th 17.1 °C at Corrigin on the 30th
Coldest night	2.5 °C at Eyre on the 25th
Coolest nights on average	10.9 °C at Rocky Gully
Warmest nights on average	27.3 °C at Bedout Island
Warmest night	31.6 °C at Mount Magnet Aero on the 28th
Warmest on average overall	33.1 °C at Paraburdoo Aero
Coolest on average overall	18.3 °C at North Walpole
Wettest overall	751.4 mm at El Questro
Wettest day	179.5 mm at Kingston Rest on the 4th
Strongest wind gust	109 km/h at Legendre Island on the 28th

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 January daily rainfall
	New record (mm)		Old record		Years of record
Northampton	55.2	on the 30th	53.3	on the 21st in 1916	126
New Norcia	70.4	on the 29th	68.0	on the 13th in 2006	120
Moningarin	75.6	on the 30th	69.3	on the 21st in 1916	107
Ogilvie	63.4	on the 30th	58.2	on the 21st in 1916	104
Yorkrakine	140.0	on the 29th	64.3	on the 29th in 1990	98
Koorda	53.0	on the 31st	52.8	on the 30th in 1968	95
Howatharra	67.0	on the 30th	48.0	on the 28th in 1990	89
Nanyanine	61.0	on the 29th	56.0	on the 23rd in 2000	78
Shackleton	65.2	on the 31st	38.4	on the 27th in 1968	75
Muresk Institute	60.0	on the 31st	54.4	on the 22nd in 1952	66
Highfields	84.0	on the 30th	74.8	on the 29th in 1990	58
Wyndham	143.2	on the 4th	134.5	on the 28th in 1998	49
Lake Argyle Resort	144.2	on the 24th	130.0	on the 26th in 1982	48
Telfer Aero	134.8	on the 19th	65.0	on the 4th in 2007	44
Kingston Rest	179.5	on the 4th	110.0	on the 2nd in 2004	39
Wundi	47.8	on the 30th	47.0	on the 2nd in 1974	39
Eurardy	60.2	on the 30th	46.8	on the 21st in 2001	32
Wyndham Aero	137.2	on the 4th	117.0	on the 12th in 1974	32
Diggers Rest	150.0	on the 4th	95.0	on the 25th in 2006	25
Kachana	153.0	on the 25th	141.8	on the 17th in 2014	23
Laverton Aero	98.8	on the 17th	89.6	on the 4th in 2007	23
Home Valley	160.0	on the 4th	110.8	on the 25th in 2006	22
Steep Point	24.0	on the 30th	23.0	on the 3rd in 2011	21
Dalwallinu	63.4	on the 30th	42.0	on the 13th in 2006	20




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Record highest January total rainfall
	New record (mm)	Old record		Years of record	Average for January
Bonney Downs	414.2	401.0	in 1917	111	69.9
Cowcowing	111.7	104.4	in 2000	110	14.7
Carlton Hill	702.4	623.6	in 1962	107	213.0
Ogilvie	77.8	69.9	in 1916	107	9.9
Yorkrakine	189.0	130.4	in 2000	102	15.7
South Holmwood	97.6	75.6	in 2006	96	12.1
Shackleton	95.6	87.2	in 1990	75	12.9
Carnegie	188.0	162.9	in 1967	62	33.4
Wyndham	537.4	434.7	in 2006	49	191.1
Lake Argyle Resort	605.8	416.6	in 1982	46	203.7
Kununurra Aero	591.6	358.8	in 2014	45	209.6
Telfer Aero	382.4	173.0	in 2014	44	60.6
Wyndham Aero	528.2	525.2	in 1962	34	198.0
El Questro	751.4	640.9	in 1984	33	231.1
Kachana	600.4	371.2	in 2014	23	220.2
Laverton Aero	177.2	134.8	in 2000	23	49.1
Diggers Rest	556.1	443.4	in 1984	22	202.0
Steep Point	42.0	38.6	in 2011	21	6.0




Highest January total rainfall for at least 20 years
	Observed (mm)	Most recent higher		Average for January
Mullewa	87.4	91.9	in 1896*	13.5
Northampton	67.6	72.4	in 1916	7.2
Ruby Plains	439.0	574.8	in 1926*	130.8
Warmun	461.2	612.6	in 1959*	181.5
Riverside	62.9	70.3	in 1963*	11.0
Yaringa Station	70.8	124.2	in 1967*	11.1
Beebyn	146.7	236.5	in 1915*	31.2
Kalbarri	30.8	43.0	in 1974	5.4
Gibb River	417.8	419.3	in 1986	194.0
Kingston Rest	378.0	379.2	in 1986*	183.3
Coolangatta	61.0	66.0	in 1990	12.0
Howatharra	72.0	87.0	in 1990	6.7
Jurien Bay	49.0	91.6	in 1990	7.6
Lancelin	87.6	101.4	in 1990	10.8
Nabawa	40.0	54.6	in 1990	7.2
Useless Loop	33.6	38.0	in 1990	4.1
Wundi	56.8	61.0	in 1990	9.2
Ygnattering	104.0	106.2	in 1990	15.3
Eradu	43.0	54.4	in 1990*	9.7
Eurardy	64.0	75.3	in 1990*	16.5
Highfields	93.8	113.6	in 1990*	13.5
Sandsprings	35.4	109.0	in 1990*	9.1
Yulmbu	365.6	397.6	in 1986*	181.4
Coorow	79.6	98.7	in 1995	12.9

* 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 lowest January daily maximum temperature
	New record (°C)		Old record		Years of record	Average for January
Perth Airport	19.7	on the 30th	20.1	on the 3rd in 2007	73	31.8
Lancelin	19.6	on the 30th	= 19.6	on the 13th in 1988	51	29.2
Brookton	17.1	on the 30th	17.6	on the 22nd in 2000	50	33.0
Beverley	17.4	on the 30th	18.0	on the 22nd in 2000	47	34.3
Swanbourne	19.5	on the 30th	20.4	on the 3rd in 2007	24	30.0
Cunderdin Airfield	18.0	on the 30th	18.1	on the 3rd in 2007	21	34.8
Gingin Aero	19.1	on the 30th	20.1	on the 3rd in 2007	21	33.2




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Record lowest January mean daily maximum temperature
	New record (°C)	Old record		Years of record	Average for January
Telfer Aero	35.8	36.3	in 2000	42	40.4




Lowest January mean daily maximum temperature for at least 20 years
	Observed (°C)	Most recent lower		Average for January
Warmun	33.8	33.6	in 1984	37.2
Argyle Aerodrome	33.9	33.5	in 1997	36.5
Curtin Aero	33.7	33.0	in 1997	36.4




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Record highest January daily minimum temperature
	New record (°C)		Old record		Years of record	Average for January
Murchison	31.2	on the 28th	= 31.2	on the 19th in 1991	27	22.5




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Record lowest January temperature
	New record (°C)		Old record		Years of record	Average for January
Warmun	19.0	on the 25th	= 19.0	on the 9th in 2014	55	24.8
Eyre	2.5	on the 25th	2.8	on the 6th in 1991	29	15.3
Cunderdin Airfield	8.5	on the 6th	9.3	on the 5th in 2007	21	17.4
York	7.5	on the 13th	7.8	on the 25th in 2001	21	16.6




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Record lowest January mean daily minimum temperature
	New record (°C)	Old record		Years of record	Average for January
Rocky Gully	10.9	11.0	in 2003	21	12.8
York	14.2	14.9	in 2007	20	16.6




Lowest January mean daily minimum temperature for at least 20 years
	Observed (°C)	Most recent lower		Average for January
Beverley	14.9	14.7	in 1987*	16.4
Wagin	13.5	12.8	in 1994	14.6
Albany	14.6	14.2	in 1960*	15.2

* 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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Lowest January mean temperature for at least 20 years
	Observed (°C)	Most recent lower		Average for January
Argyle Aerodrome	29.4	28.9	in 1997	31.1





Extremes Maps Records Summaries Important notes the top

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Summary statistics for January 2017
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for January 2017	Diff from average	Highest for January 2017		Mean for January 2017	Diff from average	Lowest for January 2017		Total for January 2017	Average for January	Rank of January 2017	Fraction of January average
North Kimberley (district 01)
Doongan	31.7	-1.5	34.5	1st	22.9	+0.1	17.9	20th	556.2	302.8	v high	184%
Kalumburu	33.4	-0.5	36.8	10th	25.0	+0.4	23.4	21st	363.4	306.6	high	119%
Troughton Island	31.3	-0.5	32.9	13th	26.9	+0.5	23.7	4th	323.6	264.1	average	123%
Truscott	31.5	-0.7	33.0	10th	25.9	+0.6	23.1	25th	268.4	307.6	average	87%
Wyndham Aero	34.4	-2.1	37.2	8th	25.7	-0.6	23.3	24th	528.2	198.0	highest	267%
East Kimberley (district 02)
Argyle Aerodrome	33.9	-2.6	36.9	30th	24.9	-0.8	23.1	18th	243.8	161.0	high	151%
Halls Creek Airport	32.8		36.3	30th	23.6		20.7	25th
Kununurra Aero	33.6	-2.3	36.9	8th	24.9	-0.2	22.6	16th	591.6	209.6	highest	282%
Warmun	33.8	-3.4	37.0	9th	24.6	-0.2	19.0	25th	461.2	181.5	v high	254%
West Kimberley (district 03)
Bidyadanga	33.4	-1.0	42.0	3rd	26.6	+0.6	23.2	6th	107.2	127.5	average	84%
Broome Airport	32.8	-0.5	38.6	3rd	27.0	+0.7	23.3	6th	221.4	181.6	high	122%
Curtin Aero	33.7	-2.7	38.4	3rd	25.0	0.0	22.9	19th	2.6	212.3	lowest	1%
Cygnet Bay	32.5	-1.2	36.6	3rd	25.6	0.0	22.8	6th	268.4	238.9	average	112%
Derby Aero	33.6	-1.7	38.7	3rd	25.8	+0.1	23.3	26th	192.8	196.6	average	98%
Fitzroy Crossing Aero	34.6	-3.0	40.0	3rd	24.9	-0.3	22.8	10th	295.0	182.5	v high	162%
De Grey (district 04)
Bedout Island	33.1		35.6	5th	27.3		25.7	28th
Karratha Aero	34.3	-1.7	43.0	5th	26.3	-0.4	23.3	15th	130.4	49.1	high	266%
Legendre Island	32.0		35.5	5th	25.9		23.6	15th
Mandora	34.4	-1.6	45.4	4th	25.9	+0.5	23.3	3rd	150.2	84.4	high	178%
Marble Bar	37.8	-3.1	45.5	4th	25.4	-1.2	23.2	12th	220.0	94.8	high	232%
Port Hedland Airport	34.9	-1.5	44.4	5th	26.6	+1.0	24.9	14th	92.0	63.2	high	146%
Roebourne Aero	37.1	-1.6	45.5	5th	25.7	-0.5	23.6	14th	91.4	77.5	average	118%
Fortescue (district 05)
Barrow Island Airport	32.3	-0.9	36.7	1st	25.2	-0.6	23.3	19th	89.8	25.8	high	348%
Learmonth Airport	37.5	-0.4	43.9	1st	23.4	+0.4	18.9	13th	10.0	31.2	average	32%
Mardie	35.6	-2.3	46.3	6th	25.5	+0.5	21.9	19th	0	38.1	lowest	0%
Onslow Airport	35.4	-1.0	45.7	5th	24.5	+0.1	20.9	22nd	42.6	39.0	high	109%
Wittenoom	37.1	-2.4	43.0	5th	25.6	-0.4	22.6	19th	137.0	114.4	high	120%
West Gascoyne (district 06)
Carnarvon Airport	32.2	+0.9	42.7	26th	22.4	-0.2	18.2	13th	12.0	11.9	high	101%
Denham	30.9	+0.2	42.0	26th	21.7	-0.4	17.0	7th	20.4	7.6	high	268%
Emu Creek Station	40.8	-0.3	46.5	5th	25.1	+0.6	20.7	22nd	7.7	46.7	low	16%
Murchison	39.0	-0.3	44.8	5th	23.2	+0.7	16.2	23rd	46.9	21.2	high	221%
Shark Bay Airport	34.8	+0.9	44.0	26th	21.1	-0.5	16.3	13th	19.0	9.3	high	204%
East Gascoyne (district 07)
Newman Aero	36.0	-3.1	41.8	4th	24.6	-0.4	20.0	14th	150.4	67.5	high	223%
Paraburdoo Aero	39.3	-1.4	44.1	5th	26.9	+1.0	23.3	19th	34.6	54.2	average	64%
Murchison (district 07A)
Meekatharra Airport	38.0	-0.3	43.6	5th	24.8	+0.4	19.5	13th	37.4	29.6	high	126%
Mount Magnet Aero	38.5	+0.6	45.1	5th	24.1	+0.6	16.4	23rd	16.0	27.1	average	59%
Paynes Find	37.8	+0.5	44.2	27th	21.1	+0.1	13.5	13th	36.6	20.1	high	182%
North Coast (district 08)
Dalwallinu	35.1	-0.2	43.0	4th	17.4	-0.8	11.2	13th	72.8	25.4	high	287%
Geraldton Airport	32.7		44.2	26th	17.1		12.6	1st	31.2
Kalbarri	33.1	-0.1	41.5	2nd	19.8	+0.2	15.0	13th	30.8	5.4	v high	570%
Morawa Airport	38.6	+1.3	45.0	27th			12.7	13th	3.2	23.0	average	14%
Mullewa	37.6	+0.8	44.4	4th	20.4	+0.9	13.2	13th	87.4	13.5	v high	647%
North Island	27.4	-0.2	37.5	26th	20.6	-0.8	18.3	13th	1.0	2.7	average	37%
Wongan Hills	35.1	+0.5	43.8	4th	17.3	-0.6	11.5	6th	63.0	15.2	v high	414%
Central Coast (district 09)
Badgingarra Research Stn	34.4	-0.3	44.5	28th	16.9	-0.2	10.6	13th	29.6	10.5	high	282%
Bickley	30.8	+0.2	41.0	4th	15.1	-0.3	8.8	13th	10.8	17.7	average	61%
Garden Island HSF	26.2	-1.4	38.4	26th	18.4	-0.7	14.8	13th	14.0	10.8	average	130%
Gingin Aero	32.5	-0.7	43.6	4th	14.9	-1.7	8.0	13th	69.2	17.7	high	391%
Gosnells City	32.7	-0.5	42.5	4th	17.7	-0.9	12.0	7th	24.3	11.7	high	208%
Jandakot Aero	30.9	-0.5	41.7	26th	16.0	-0.9	8.0	13th	18.6	14.3	high	130%
Jurien Bay	30.4	+0.4	40.8	26th	16.7	-0.6	11.8	13th	49.0	7.6	v high	645%
Karnet			40.2	4th	14.9	-0.5	9.0	23rd	17.8	17.1	high	104%
Lancelin	27.8	-1.4	40.5	26th	16.8	-0.8	13.2	24th	87.6	10.8	v high	811%
Pearce RAAF	33.9	+0.4	44.5	4th	15.4	-1.6	9.1	23rd	54.6	9.7	v high	563%
Perth Airport	32.0	+0.2	43.3	4th	16.3	-0.8	8.0	13th	36.0	10.0	v high	360%
Perth Metro	31.0	-0.2	42.0	26th	16.8	-1.4	11.5	13th	45.4	16.7	high	272%
Rottnest Island	25.9	-0.7	39.3	26th	18.5	-0.6	15.7	13th	11.2	12.0	average	93%
Swanbourne	28.6	-1.4	40.1	26th	17.7	-0.6	12.8	13th	33.8	15.5	high	218%
South Coast (district 09A)
Albany	22.1	-0.7	28.2	26th	14.6	-0.6	9.8	24th	3.6	23.9	v low	15%
Albany Airport	25.1		39.4	26th	12.0		6.1	24th	4.4
Bunbury	29.6	-0.2	39.0	4th	14.2	-1.3	8.7	14th	0.2	12.0	low	2%
Busselton Aero	30.5	+0.3	38.3	4th	12.7	-1.7	8.1	8th	0.6	12.9	average	5%
Cape Leeuwin	22.8	-0.3	25.6	26th	16.6	-0.4	12.9	24th	3.6	16.3	low	22%
Cape Naturaliste	25.8	+0.3	34.7	26th	14.5	-0.7	10.7	24th	1.0	10.8	low	9%
Collie East	31.5	+0.7	40.4	4th	12.3	-1.3	7.3	20th	0.4	19.3	low	2%
Donnybrook	32.1	+1.5	41.5	4th	14.2	+0.1	9.8	6th	0.8	12.6	low	6%
Dwellingup	31.1	+1.4	40.7	4th	14.2	-0.1	8.4	13th	1.4	15.4	low	9%
Esperance	26.8	+0.6	42.6	5th	15.4	-0.3	9.7	24th	28.8	27.1	high	106%
Esperance Aero	29.4	+1.6	43.0	5th	14.7	-0.2	9.9	14th	41.2	27.9	high	148%
Hopetoun North	26.8	+1.5	44.9	5th	14.6	-0.6	8.8	25th	4.4	38.8	low	11%
Jarrahwood	31.1	+1.4	39.8	4th	11.5	-1.2	5.0	24th	4.0	16.7	average	24%
Mandurah	29.0	-0.5	37.4	26th	18.4	-0.6	14.8	13th	3.4	15.4	average	22%
Manjimup	28.6	+1.4	39.7	4th	12.0	-1.1	8.0	24th	4.6	20.0	low	23%
North Walpole	23.8	-0.7	30.3	26th	12.8	-1.9	8.2	24th	12.6	29.0	average	43%
Rocky Gully	28.3	+0.8	40.2	4th	10.9	-1.9	5.1	1st	3.8	19.8	v low	19%
Shannon	26.7	+0.1	38.9	4th	11.8	-1.1	6.4	24th	9.4	15.9	average	59%
Witchcliffe	26.3	-0.3	35.7	26th	12.9	-1.1	7.0	24th	4.6	10.0	average	46%
North Central (district 10)
Bencubbin	34.4	-0.1	42.6	5th	18.3	+0.1	12.9	6th	52.2	17.1	v high	305%
Cunderdin Airfield	34.7	-0.1	44.4	28th	15.7	-1.7	8.5	6th	69.6	25.4	high	274%
Northam	34.2	0.0	45.0	28th	16.2	-1.0	10.7	13th	130.1	11.6	v high	1122%
York	34.5	+0.3	43.7	4th	14.2	-2.4	7.5	13th	67.5	30.2	high	224%
South Central (district 10A)
Beverley	34.4	+0.1	43.0	4th	14.9	-1.5	9.0	13th	53.8	12.6	v high	427%
Brookton	33.5	+0.5	42.8	4th	14.8	-0.8	8.5	13th	37.7	13.3	high	283%
Corrigin	33.8	+1.2	42.0	28th	14.9	-1.0	10.6	13th	24.8	17.3	high	143%
Hyden	34.2	+0.5	44.2	5th	14.6	-1.0	8.9	23rd	77.2	20.4	v high	378%
Jacup	29.9	+2.1	43.3	5th	12.3	-0.9	6.1	20th	3.4	33.3	low	10%
Katanning	31.2	+1.1	40.3	4th	12.2	-1.6	7.6	20th	0.2	23.6	v low	1%
Lake Grace	32.0	+0.9	42.0	5th	14.5	-0.9	9.6	24th	20.6	37.7	average	55%
Narembeen	34.4	+0.4	42.4	28th	16.0	-0.6	11.2	13th	67.5	17.6	v high	384%
Narrogin	32.0	+1.0	40.7	11th	14.1	-0.1	9.8	23rd	1.6	12.9	average	12%
Newdegate Research Station	32.5	+1.4	43.7	5th	12.3	-1.7	6.3	24th	28.4	19.5	high	146%
Ongerup	30.4	+1.7	41.0	5th	13.2	-0.7	8.4	20th	5.4	19.2	average	28%
Ravensthorpe	29.8	+0.8	43.0	5th	14.2	+0.1	7.0	24th	13.4	24.9	average	54%
Wagin	32.7	+1.6	41.1	4th	13.5	-1.1	8.6	21st	0.2	12.8	low	2%
Wandering	32.6	+0.4	42.4	4th	12.7	-1.6	5.4	13th	9.6	17.4	average	55%
Eucla (district 11)
Balladonia	32.9	+1.6	41.0	27th	15.0	+0.3	9.0	24th	16.1	20.1	average	80%
Eucla	27.2	+1.4	43.0	16th	17.6	+0.9	13.8	15th	50.0	15.4	v high	325%
Eyre	27.4	+0.9	40.6	29th	14.5	-0.8	2.5	25th	35.4	17.4	high	203%
Forrest	31.5	-1.6	43.9	6th	17.2	+0.9	12.0	25th	31.8	24.7	high	129%
Red Rocks Point	25.3	+0.3	35.4	27th	18.2	-0.1	12.9	25th	32.0	26.1	high	123%
South East (district 12)
Bulga Downs	38.1	+0.4	43.5	5th	22.8	+0.4	18.7	13th	11.6	30.3	average	38%
Kalgoorlie-Boulder Airport	33.4	-0.3	40.6	27th	18.9	+0.6	13.8	1st	83.2	27.5	high	303%
Laverton Aero	34.9	-0.6	41.7	16th	20.7	-0.8	14.9	18th	177.2	49.1	highest	361%
Leinster Aero	36.8	-0.4	41.9	5th	23.0	-0.2	16.4	18th	16.8	40.0	average	42%
Leonora Aero	36.4		42.1	22nd	22.2		16.9	18th	94.8	49.4	high	192%
Munglinup West	30.4	+1.6	44.2	5th	13.9	-0.7	8.0	24th	22.6	43.9	average	51%
Norseman Aero	32.8	+0.4	41.6	27th	15.5	-0.4	8.7	24th	30.2	38.4	average	79%
Salmon Gums Res.Stn.	31.2	+0.6	41.6	5th	13.3	-0.6	4.4	24th	43.8	26.7	high	164%
Southern Cross Airfield	34.4	-0.3	44.6	5th	17.8	-0.1	12.9	1st	72.8	32.6	high	223%
Yeelirrie	37.2	-0.7	43.0	5th	23.3	+1.0	18.5	18th	84.6	30.2	high	280%
North East (district 13)
Carnegie	35.2	-3.6	42.1	5th	23.3	-0.7	18.2	9th	188.0	33.4	highest	563%
Giles Meteorological Office	35.2	-2.1	39.0	31st	23.5	0.0	19.9	15th	102.4	31.7	v high	323%
Telfer Aero	35.8	-4.6	43.4	4th	24.7	-1.3	21.2	7th	382.4	60.6	highest	631%
Warburton Airfield	35.0	-2.9	41.0	5th	23.3	+0.3	19.5	14th	159.6	30.8	v high	518%
Wiluna	37.1	-0.9	42.0	5th	24.3	+1.4	18.0	18th	44.1	37.0	high	119%
Offshore Islands (district 200)
Adele Island	30.7		32.3	2nd			24.0	26th
Browse Island	29.6		31.1	16th	27.0		23.7	5th
Christmas Island Aero	28.2	+0.2	29.5	20th	22.9	+0.2	20.4	17th	310.4	297.2	average	104%
Cocos Island Airport	30.1	+0.4	31.4	27th	24.8	-0.1	22.4	14th	38.4	162.1	low	24%
Rowley Shoals	29.0		29.9	5th			23.9	26th
Note: Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225). Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

Extremes Maps Records Summaries Important notes the top

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Notes

The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Western Australia using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 1 pm on Wednesday 1 February 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages for individual sites are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

Media

media@bom.gov.au (03) 9669 4057

Enquiries

helpdesk.climate@bom.gov.au

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