Wednesday, 3 August 2022 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0

Greater Perth in July 2022: some warm days with rainfall close to average

Rainfall in July was generally close to average across Greater Perth. Both daytime and night-time temperatures were warmer than average at all stations around Greater Perth, but there were some cold nights during the first half of the month and July ended with two cooler than average days.

Generally close to average rainfall

• Most stations in Greater Perth recorded monthly rainfall totals close to the July average.
• July rainfall totals ranged from 77% of average at Perth Airport to 138% of average at Garden Island.
• Rainfall was spread throughout the month, with several cold fronts crossing the city during July, bringing regular rain and strong winds.
• The wettest day was in the 24 hours to 9am on the 10th, when a daily total of 51.8 mm was recorded at Bickley.
• Later in the month, successive cold fronts brought strong winds and rain to south-west Western Australia, including the Perth region, and wind gusts of 89 km/h were recorded on the 21st at both Garden Island and Rottnest Island.
• The highest recorded monthly total was 244.2 mm at Jarrahdale.

Warmer than average days

• Daytime temperatures were warmer than average at all stations around Greater Perth.
• Daily maximum temperatures on most days were close to or warmer than average, but there were several cooler than average days, with the 17th the coldest day in the city and most suburbs.
• Mean maximum temperatures ranged from 0.4 °C above average at Bickley to 1.1 °C above average at Pearce RAAF.
• Night-time temperatures for July were warmer than average at all stations around Greater Perth.
• Daily minimum temperatures were generally cooler than average during the first half of July, but were warmer than average later in the month.
• Mean minimum temperatures ranged from 0.3 °C above average at Mandurah to 1.2 °C above average at Perth Airport.
• On the 9th, Rottnest Island recorded a minimum temperature of 17.8 °C, its warmest July night on record.

Perth Metro

• Total rainfall for Perth Metro was 157.0 mm, which is 107% of the long-term average of 147.1 mm.
• The mean daily maximum temperature for Perth Metro was 19.0 °C, which is 0.5 °C above the long-term average of 18.5 °C.
• The warmest day was 23.6 °C on the 8th, and the coolest day was on the 17th when the temperature reached 14.2 °C.
• The mean daily minimum temperature for Perth Metro was 8.7 °C, which is 0.7 °C above the long-term average of 8.0 °C.
• The coldest morning was 2.5 °C on the 3rd, and the warmest morning was on the 9th when the minimum temperature was 15.0 °C.

Further information

Media

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

Extremes Maps Records Summaries Daily observations Important notes the top

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Extremes in July 2022
Hottest day	23.6 °C at Perth Metro on the 8th
Warmest days on average	19.0 °C at Pearce RAAF, Perth Airport, Perth Metro, and Swanbourne
Coolest days on average	15.5 °C at Bickley
Coldest day	11.0 °C at Bickley on the 17th
Coldest night	1.5 °C at Millendon (Swan Valley) on the 3rd
Coolest nights on average	7.7 °C at Millendon (Swan Valley)
Warmest nights on average	12.8 °C at Rottnest Island
Warmest night	17.8 °C at Rottnest Island on the 9th
Warmest on average overall	15.8 °C at Rottnest Island
Coolest on average overall	11.6 °C at Bickley
Wettest overall	244.2 mm at Jarrahdale
Wettest day	51.8 mm at Bickley on the 10th
Strongest wind gust	89 km/h at Garden Island HSF and Rottnest Island on the 21st

Extremes Maps Records Summaries Daily observations Important notes the top

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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





Extremes Maps Records Summaries Daily observations 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
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%
Jandakot Aero	18.6	+0.6	23.5	8th	8.2	+1.1	2.2	12th	159.0	174.4	average	91%
Mandurah	18.0	+0.5	20.5	13th	11.1	+0.3	7.5	1st	113.2	116.4	average	97%
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%

Extremes Maps Records Summaries Daily observations Important notes the top

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Daily maximum temperatures for July 2022
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Bickley	15.9	15.6	15.8	16.2	12.3	15.2	12.6	20.1	18.7	14.3	15.6	16.9	18.8	14.8	16.9	17.5	11.0	14.8	13.5	18.5	14.7	15.3	12.8	12.9	15.7	15.3	17.0	18.9	15.0	12.5	14.0
Garden Island HSF	17.8	18.9	19.4	19.4	15.3	17.4	16.2	22.1	20.4	16.8	18.6	19.1	21.2	19.8	19.5	19.4	17.2	18.3	18.4	20.7	17.3	18.7	18.7	16.8	18.6	18.2	20.3	20.5	18.7	15.9	17.4
Gosnells City	23.0	21.3	19.6	20.1	15.5	19.2	19.1	23.5	22.5						20.8	21.6						18.6	15.8							16.6
Jandakot Aero	18.9	18.8	19.2	19.9	15.0	18.4	15.5	23.5	20.9	17.0	18.8	19.5	22.1	19.7	20.0	20.3	14.4	18.0	17.6	21.5	18.1	18.7	16.5	15.7	19.1	18.4	20.5		18.9	15.9	17.7
Karnet						15.7	12.0	21.1						15.7	18.5	17.2	12.0	15.0	14.0	19.0	15.0	16.0	13.2	12.6	16.5	14.5			15.5	12.1	14.4
Mandurah	17.1	18.1	18.7	18.3	15.8	18.0	15.6	19.9	18.7	16.5	17.0	18.0	20.5	18.9	19.6	18.8	16.6	17.8	18.1	19.2	17.5	19.2	18.1	16.8	17.3	18.1	19.6	19.6	18.0	15.5	17.0
Millendon (Swan Valley)	19.1	18.8	19.2	18.6	15.0	18.3	17.8	22.2	22.2	18.5	18.5	20.7	22.0	19.2	20.3	20.4	14.7	19.6	17.1	20.9	18.3	18.3	16.4	16.0	17.6	18.7	20.4	22.0	18.8	16.4	17.2
Pearce RAAF	18.5	18.5	19.1	19.1	15.9	18.5	18.7	22.6	23.1	18.5	17.7	20.7	22.7	19.3	20.1	20.8	14.7	20.3	17.5	21.5	18.3	17.9	16.8	16.2		19.2	20.7	22.2	18.4	15.8	17.9
Perth Airport	19.6	19.1	19.4	19.8	14.8	18.7	17.1	23.0	22.5	17.9	18.9	20.6	22.0	19.4	19.7	20.5	14.2	18.9	17.3	22.1	18.5	18.5	16.2	16.4	19.1	19.3	20.9	22.4	18.7	16.3	18.0
Perth Metro	19.5	19.2	19.2	19.9	14.8	18.9	17.5	23.6	22.3	17.4	18.8	20.6	21.9	19.2	19.8	20.1	14.2	19.4	18.1	21.4	18.5	18.8	17.1	16.7	18.6	18.8	20.9	22.0	19.1	16.1	17.8
Rottnest Island	18.1	18.3	19.3	19.7	16.5	16.5	18.5	22.4	21.0	17.5	17.7	19.4	20.9	19.7	19.1	19.5	17.9	18.0	17.9	20.2	17.6	18.4	19.0	16.7	17.8	19.4	19.8	21.3	18.7	16.0	17.6
Swanbourne	19.7	19.3	19.7	19.9	14.5	18.2	16.3	23.5	20.7	17.6	19.0	19.6	22.5	19.6	19.7	20.3	16.6	19.0	19.0	21.5	17.9	20.2	18.5	16.1	18.4	18.0	21.1	21.4	18.8	15.9	17.3
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated, and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference from the long-term average for the period			-10.0	-9.0	-8.0	-7.0	-6.0	-5.0	-4.0	-3.0	-2.0	-1.0	0.0	+1.0	+2.0	+3.0	+4.0	+5.0	+6.0	+7.0	+8.0	+9.0	+10.0	°C	Grey outline marks highest and lowest for the period

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Daily minimum temperatures for July 2022
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Bickley	4.8	5.2	4.7	4.0	8.1	6.9	5.6	6.3	12.6	9.7	6.3	5.5	5.9	8.1	11.1	9.9	9.4	9.2	6.4	7.0	10.2	9.7	10.6	4.7	7.2	8.6	9.8	8.3	11.1	7.6	6.2
Garden Island HSF	8.8	9.1	9.5	11.0	13.9	9.7	9.0	10.5	15.8	13.0	9.1	9.7	8.7	12.7	14.6	12.8	13.4	12.2	9.7	11.9	12.6	13.5	14.7	8.8	11.1	12.9	11.0	13.0	15.9	12.7	9.9
Gosnells City		10.5	8.6	9.1			10.1	11.2		14.1							12.4						12.4	5.1
Jandakot Aero	2.8	2.8	2.4	4.3	8.1	4.7	5.4	6.7	15.0	13.8	3.5	2.2	3.0	10.3	13.9	10.4	10.2	11.1	6.6	10.9	12.1	9.0	12.0	5.1	9.3	9.9	8.6	7.3	14.3	11.1	7.1
Karnet							6.0	5.7							10.9	8.0	8.4	10.0	6.9	8.0	10.5	9.2	11.2	3.4	6.9	9.5	7.8			7.9	4.5
Mandurah	7.5	7.6	8.1	9.8	13.2	9.6	8.5	9.6	13.8	14.2	9.0	9.5	8.7	11.0	15.0	13.4	13.2	12.2	8.9	10.8	12.2	12.8	15.0	8.4	9.9	12.2	10.8	11.8	15.5	12.2	10.0
Millendon (Swan Valley)	4.2	2.9	1.5	3.6	4.7	7.4	6.2	9.5	11.0	10.2	3.6	2.7	1.9	8.3	9.2	5.4	11.2	8.8	9.7	11.3	12.4	8.6	10.9	6.5	8.1	7.5	11.3	9.2	13.4	9.9	6.6
Pearce RAAF	8.8	4.0	3.6	5.6	9.7	8.9	8.0	9.6	13.2	10.6	5.9	5.4	3.9	9.6	11.5	5.4	11.5	9.0	10.4	11.9	12.7	9.2	10.7	6.7	8.6	8.5	12.2	12.8	12.8	10.2	8.3
Perth Airport	7.4	7.4	6.6	6.8	5.5	7.0	7.7	9.8	12.0	12.6	5.2	6.8	5.1	10.8	12.1	8.1	12.2	11.0	8.6	10.9	12.4	10.4	11.8	7.0	7.5	9.8	11.4	12.0	14.0	10.9	7.5
Perth Metro	5.3	4.3	2.5	2.6	7.5	5.4	6.3	9.1	15.0	12.8	5.7	3.8	3.1	10.8	12.7	8.6	11.9	10.8	7.2	11.2	12.7	10.0	11.9	7.0	8.7	10.5	11.4	7.5	14.2	10.9	8.0
Rottnest Island	11.0	11.8	12.3	12.8	14.4	11.4	9.4	10.9	17.8	13.2	12.1	12.2	12.3	14.1	14.6	13.8	12.7	12.3	11.5	13.3	13.6	14.2	14.0	10.2	10.9	13.9	13.9	14.5	15.9	11.2	11.5
Swanbourne	6.8	7.0	6.9	7.4	11.8	7.9	7.3	9.7	15.9	14.0	7.7	6.4	6.9	12.0	15.2	11.1	12.6	11.9	8.6	11.6	12.7	12.9	12.5	7.7	9.6	12.2	11.6	10.8	15.2	11.0	8.8
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated, and typically occurred that morning.
Temperatures coloured according to their difference from the long-term average for the period			-10.0	-9.0	-8.0	-7.0	-6.0	-5.0	-4.0	-3.0	-2.0	-1.0	0.0	+1.0	+2.0	+3.0	+4.0	+5.0	+6.0	+7.0	+8.0	+9.0	+10.0	°C	Grey outline marks highest and lowest for the period

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Daily rainfall for July 2022
	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Anketell	-	-	-	-	3.7	3.0	-	-	-	21.2	6.1	0.1	-	2.3	14.7	1.2	0.2	11.7	0.2	0.1	23.2	5.0	27.1	21.3	0.4	1.1	11.9	0.2	16.0	4.4	2.7
Araluen	-	-	-	-	-	12.6	-	-	-	→	51.0	-	-	-	24.2	-	-	17.2	-	-	14.0	13.0	-	-	-	-	-	-	-
Bickley	0.4	0.2	-	0.2	-				-	51.8	2.6	-	-	0.2	28.2	-	-	18.6	0.2	0.2	18.4	3.6	14.6	33.6	0.2	-	4.0	-	1.0	4.0	4.8
Bungendore	-	-	-	-	2.6	5.0	-	0.2	-	44.6	8.8	0.2	0.2	1.0	30.0	0.4	-	11.8	-	0.2	21.4	7.4	25.2	24.8	0.2	-	15.8	-	22.4	9.2	4.2
Chidlow	-	-	-	-	-	3.8	-	-	-	→	22.0	-	-	-	10.4	-	→	11.9	0.1	-	7.6	→	9.2	→	19.3	-	-	4.5	26.1	12.2
Garden Island HSF	-	-	-	-	18.0	6.2	-	-	-	16.8	5.0	0.2	-	8.2	11.2	2.8	0.4	9.2	-	-	26.6	4.4	9.6	15.6	0.6	1.6	21.2	-	11.2	1.2	2.6
Gidgegannup	0.2	-	-	0.2	0.2	5.0	0.2	-	-	30.8	2.0	-	-	0.2	12.2	0.2	0.8	12.4	0.4	-	6.8	1.8	10.6	27.8	-	-	4.2	-	18.4	20.0	4.6
Gosnells City		-	-	-	3.2	7.6	-	-	-	27.6	→	→	→	→	→	0.4	-						13.2	29.0	→	→	→	→	→	→	4.2
Huntly	-	-	-	-	5.0	1.5	-	-	-	43.5	4.6	-	-	4.0	27.0	3.0	1.0	11.0	-	-	20.5	2.6	22.0	40.0	0.5	2.0	6.0	-	19.4	12.0	4.0
Jandakot Aero	0.2	-	-	-	2.8	6.0	0.2	-	-	28.4	2.8	-	-	1.6	18.4	0.8	-	11.6	0.2	0.2	19.8	2.0	31.4	11.6	-	0.2	12.6			4.6	3.6
Jarrahdale	-	0.4	0.4	0.2	5.8	3.2	0.4	-	0.2	45.0	4.8	0.2	0.2	2.8	27.6	1.8	-	9.8	0.2	0.2	20.0	3.0	25.6	35.0	0.6	0.2	13.0	0.2	25.8	12.8	4.8
Karnet	→	→	→	→	→	95.4	-	-							19.0	0.2	-	4.8	0.2	-	21.6	6.6	20.1	28.1	-	1.0	4.4			10.2	5.8
Karragullen North	-	-	-	-	5.2	5.0	-	-	-	44.6	4.2	-	-	-	28.2	0.4	4.2	16.2	0.4	-	14.4	1.8	23.2	33.2	-	-	-	-	23.8	12.2	4.0
Maida Vale	-	-	-	-	-	6.2	-	-	-	24.6	4.0	-	-	-	15.8	-	0.8	14.0	-	0.8	11.4	2.0	17.2	14.2	0.4	-	6.2	-	15.0	6.2
Mandurah	-	-	-	-	9.6	5.0	-	-	-	17.6	3.6	-	-	15.0	2.2	0.4	-	6.0	-	0.2	14.6	3.0	13.4		0.4	8.8	0.6	0.2	11.0		1.6
Millendon (Swan Valley)	-	-	-	-	-	3.4	0.2	-	-	19.2	0.6	0.2	-	-	9.2	-	0.2	11.2	-	-	5.8	6.0	10.0	19.4	0.2	-	4.6	0.2	23.4	4.6	5.0
Mount Solus	0.4	0.2	-	-	6.6	3.4	0.2	-	-	44.2	4.6	0.2	-	1.2	32.4	1.4	0.2	10.6	0.4	-	19.4	2.2	17.4	20.2	-	0.4	3.6	-	17.8	15.8	0.8
Muchea	-	-	0.2	-	-	2.0	-	0.2	-	21.8	3.4	-	0.2	-	22.6	0.2	2.6	4.6	0.2	0.4	8.0	3.0	4.8	26.8	-	-	1.6	-	16.2	7.2	1.2
Mundaring	-	-	-	-	2.1	-	-	-	-	46.6	2.2	-	-	-	21.8	0.2	0.2	15.2	0.8	0.4	8.4	2.0	16.8	29.8	0.2	-	12.6	0.2	35.2	14.6	1.6
Pearce RAAF	-	-	-	-	-	4.6	-	-	-	19.8	1.4	-	-	-	13.8	0.4	1.4	13.4	0.2	-	6.4	3.0	6.8	34.4	-		0.8	-	9.0	5.8	1.8
Perth Airport	-	-	-	-	-	4.8	-	-	-	21.6	1.6	-	-	-	20.6	0.4	-	9.8	-	-	10.0	2.6	9.0	15.2	-	-	5.8	-	12.4	5.8	0.6
Perth Metro	-	-	-	-	0.2	6.2	-	-	-	25.2	2.6	-	-	-	24.0	-	-	9.6	-	0.2	13.6	4.8	15.6	22.2	-	-	7.6	-	13.2	8.8	3.2
Pinjarra Refinery	-	-	-	-	6.0	-	-	-	-	32.4	3.0	0.2	-	12.6	5.4	3.2	1.0	2.4	0.2	-	24.0	1.4	20.0	22.4	1.4	6.4	4.8	-	22.0	5.4	3.4
Pinjarra South	-	-	-	-	4.8	1.4	-	-	-	24.2	2.6	-	-	9.4	4.8	0.2	0.2	5.6	-	0.2	19.4	2.0	19.0	17.0	1.2	3.6	5.0	0.2	21.2	3.4	4.4
Roleystone	-	-	-	-	1.6	10.8	-	-	-	45.4	7.2	-	-	2.6	22.8	-	-	13.8	-	-	15.0	2.6	29.8	22.4	-	-	-	-	25.6	10.4	3.2
Rottnest Island	-	-	-	-	4.2	9.4	-	-	-	10.2	1.4	-	-	18.2	6.2	2.0	2.4	8.2	0.2	0.2	8.6	3.0	8.8	9.0	-	3.2	5.2	0.2	6.4	2.0	0.6
Serpentine	-	-	-	-	2.8	2.6	-	-	-	24.8	5.8	-	-	1.2	19.4	0.4	-	7.4	-	-	21.4	1.8	16.4	30.8	-	0.2	8.6	-	23.8	7.4	4.4
Subiaco Treatment Plant	-	-	-	-	2.4	6.4	-	-	-	17.2
Swanbourne	-	-	-	-	2.6	6.6	-	-	-	19.0	3.2	-	-	2.2	15.6	0.2	-	11.0	-	0.2	19.0	3.0	37.8	23.0	-	-	7.4	-	10.4	6.6	5.0
Tamala Park (Mindarie)	-	-	-	-	0.1	5.8	-	-	-	20.0	2.6	-	-	-	18.2	0.8	0.6	12.0	2.2	0.2	14.2	2.6	22.0	15.7	-	-	4.2	-	23.4	0.3	0.3
Wanneroo	-	-	-	-	0.6	4.0	0.2	-	→	→	32.0	-	-	-	22.6	→	→	→	15.8	0.3	13.8	6.6	→	→	32.0	-	3.4	-	26.6
Werribee	0.2	-	-	-	-	1.4	-	-	-	23.0	0.8	-	0.2	-	12.6	0.2	1.8	6.8	0.2	-	4.4	1.0	4.8	16.0	-	-	2.0	-	11.0	12.2	1.2
Whiteman Park	-	-	-	-	-	4.0	-	-	→	→	26.6	-	-	-	19.2	→	→	17.6	-	-	9.6	5.2
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day. Values over 100 mm have been rounded to the nearest whole millimetre. Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured according to the amount	0	1.0	5.0	10.0	15.0	25.0	50.0	100	150	200	300	400	600	millimetres

Extremes Maps Records Summaries Daily observations Important notes the top

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Notes

The Monthly climate summary, usually published in the first week of the following month, lists the main features of the weather in Greater Perth 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 summary includes data from observing sites in or near the Greater Perth “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.”

This statement has been prepared based on information available at 8 am on Wednesday 3 August 2022. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

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.

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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.

Further information

Media

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

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