Western Australia in July 2016: A wet month with warmer nights for most of WA

For Western Australia, the mean minimum temperature in July 2016 ranked the tenth-highest in July on record, while the mean maximum temperature was slightly warmer than normal. Rainfall was above average in July for much of WA, particularly in the northwest; however, rainfall in the southwest was mostly below average.

Wet in northwest, dry in southwest

  • With much of WA outside the southwest having above average rainfall, the state averaged rainfall was approximately 50% above normal
  • A surface trough moving across northwest WA brought record high July daily rainfall to parts of the Pilbara and Gascoyne in early July; including Mardie in the Pilbara coast with 118 years of record
  • A pre-frontal cloudband brought moderate to heavy rainfall including some daily rainfall records to the South West district on the 14th to 16th; causing localised flooding in the Vasse River catchment as Jarrahwood recorded 223.2 mm over the three-day period
  • A cloudband brought record high July daily falls to isolated parts of the Central West and west Gascoyne on the 17th
  • A number of sites in the north, southwest and southeast had their the wettest July on record; or wettest July for at least 20 years, while Mardie had its wettest July for 112 years

Cooler days but warmer nights for much of WA

  • WA's mean minimum temperature was 1.1 °C above average; the tenth-highest in July on record
  • Several sites in the Pilbara and Kimberley had their warmest July night on record early in the month, Troughton Island's minimum of 26.6 °C is the equal second- highest July minimum temperature on record in Australia
  • Very much above average mean maximum temperatures were reported in the north and west Kimberley, with a few sites having their highest July mean daily maximum temperature on record
  • Kalumburu recorded a daily maximum of 38.3 °C on the 24th, the highest July temperature on record in Australia

Further information

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Extremes in July 2016
Hottest day 38.3 °C at Kalumburu on the 24th
Warmest days on average 33.8 °C at Kalumburu
Coolest days on average 13.6 °C at Katanning
Coldest day 8.9 °C at Norseman Aero on the 9th
Coldest night -3.8 °C at Wandering on the 13th
Coolest nights on average 2.9 °C at Wandering
2.9 °C at York
Warmest nights on average 25.4 °C at Browse Island
Warmest night 27.2 °C at Browse Island on the 2nd
Warmest on average overall 27.3 °C at Browse Island
Coolest on average overall 8.6 °C at Corrigin
Wettest overall 324.6 mm at Jarrahwood
Wettest day 113.2 mm at Jarrahwood on the 16th
Strongest wind gust 130 km/h at Cape Leeuwin on the 29th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

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


Record highest July daily rainfall
New record
(mm)
Old
record
Years of
record
Mardie 90.8 on the 4th 41.2 on the 11th in 2005 118
Boolardy 90.4 on the 6th 56.1 on the 16th in 1974 108
Mumby 44.6 on the 9th 43.7 on the 20th in 1965 108
Lynton 53.8 on the 17th 50.3 on the 7th in 1919 90
Three Rivers 44.4 on the 6th 40.4 on the 3rd in 1997 89
Coppin Rock 28.0 on the 9th 26.8 on the 25th in 1988 55
Jarrahwood 113.2 on the 16th 93.4 on the 31st in 2015 41
Wundi 48.0 on the 9th 40.0 on the 1st in 1978 39
Useless Loop 42.0 on the 17th 29.6 on the 21st in 2015 32
Weelarrana 46.0 on the 6th 26.2 on the 20th in 1984 30
Ludlow 61.2 on the 15th 60.6 on the 30th in 1986 20



Record highest July total rainfall
New record
(mm)
Old
record
Years of
record
Average for
July
Onslow Airport 115.4 105.8 in 2005 53 20.7
Rawlinna Depot 55.8 = 55.8 in 1980 47 19.7
Weelarrana 89.6 39.1 in 1998 30 10.5
Mingah Springs 73.8 56.8 in 1998 24 14.5
Ludlow 197.8 186.5 in 1986 20 133.5

Highest July total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
July
Mardie 144.0 150.6 in 1904 14.1
Mundrabilla Station 63.7 76.8 in 1916* 22.9
Emu Creek Station 99.8 126.3 in 1974 22.4
Boolardy 122.4 126.2 in 1974* 30.3
Three Rivers 74.6 83.5 in 1974* 11.9
Sturt Creek 39.0 76.8 in 1978* 6.2
Mount Elizabeth 15.4 34.0 in 1986 3.3
Sophie Downs 24.0 50.6 in 1986* 4.4
Mount House Station 14.8 36.0 in 1986* 5.1
Charnley River 12.8 28.2 in 1986* 4.0
Gibb River 9.8 18.4 in 1986* 4.2
Jarrahwood 324.6 386.7 in 1996 179.6

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








Record highest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Bidyadanga 35.7 on the 1st 35.6 on the 28th in 2015 57 29.5
Gascoyne Junction 32.1 on the 31st 31.5 on the 30th in 2015 41 23.1
Troughton Island 32.0 on the 13th 31.8 on the 2nd in 2009 37 28.2
Derby Aero 36.2 on the 25th 35.9 on the 1st in 1996 32 30.7
Murchison 29.8 on the 29th 29.5 on the 29th in 2001 26 21.0
Mount Magnet Aero 28.4 on the 29th 27.9 on the 15th in 2013 22 18.8



Record lowest July daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Argyle Aerodrome 21.4 on the 13th 21.9 on the 2nd in 1998 23 29.7



Record highest July mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Troughton Island 29.9 29.8 in 2005 36 28.2
Derby Aero 32.0 31.9 in 1975 31 30.7

Highest July mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
July
Broome Airport 30.9 31.0 in 1992 28.9
Bidyadanga 31.5 31.8 in 1992* 29.5

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




Record lowest July mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Bunbury 16.3 = 16.3 in 1998 20 17.3

Lowest July mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
Mardie 26.3 25.5 in 1986 27.7

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




Record highest July daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Kalgoorlie-Boulder Airport 15.8 on the 30th = 15.8 on the 30th in 2001 76 5.0
Mardie 22.3 on the 3rd 22.1 on the 15th in 1996 59 11.8
Manjimup 13.9 on the 16th 13.6 on the 15th in 2013 57 6.4
Mandora 22.1 on the 1st 21.4 on the 1st in 1996 54 12.5
Troughton Island 26.6 on the 2nd 26.0 on the 2nd in 2009 37 22.2
Doongan 21.1 on the 12th 20.0 on the 17th in 2005 26 10.8
Swanbourne 15.8 on the 16th = 15.8 on the 31st in 2015 23 9.6



Record lowest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Rocky Gully -0.4 on the 13th -0.3 on the 7th in 2013 21 6.5



Record highest July mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Mardie 16.2 15.1 in 2004 59 11.8
Karratha Aero 16.5 16.4 in 2010 22 13.7
Paraburdoo Aero 12.0 = 12.0 in 1996 20 9.8

Highest July mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
July
Wittenoom 13.4 15.1 in 1973 11.5
Emu Creek Station 14.1 14.3 in 1996 11.2



Record highest July mean temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Telfer Aero 19.6 19.5 in 2000 42 18.0
Troughton Island 26.9 = 26.9 in 2010 36 25.2

Highest July mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
July
Broome Airport 23.8 24.2 in 1973 21.3
Port Hedland Airport 22.2 22.9 in 1973 19.8
Derby Aero 24.4 24.9 in 1975* 22.7

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




Lowest July mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
Corrigin 8.6 8.4 in 1952 10.1
Beverley 9.5 9.0 in 1986* 11.0
Hyden 9.4 9.2 in 1986* 10.5

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




Summary statistics for July 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2016
Diff
from
average
Highest for
July
2016
Mean for
July
2016
Diff
from
average
Lowest for
July
2016
Total for
July
2016
Average
for
July
Rank of
July
2016
Fraction of
July
average
North Kimberley (district 01)
Doongan 30.9 +1.2 34.2 24th 11.2 +0.4 3.5 17th 3.4 0.7 v high 486%
Kalumburu 33.8 +1.8 38.3 24th 14.9 +1.0 7.8 17th 0 1.7 v low 0%
Troughton Island 29.9 +1.7 32.0 13th 23.9 +1.7 20.6 16th 0 3.0 lowest 0%
Truscott 31.8 +1.3 35.6 24th 19.3 +1.0 13.2 18th 0 2.4 v low 0%
Wyndham Aero 32.9 +1.1 37.3 24th 16.2 +0.9 8.6 18th 0 2.8 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 30.4 +0.7 35.1 24th 17.0 +1.3 11.0 17th 2.8 1.5 high 187%
Halls Creek Airport 27.7 +0.5 33.0 23rd 14.1 +1.5 6.9 17th 26.2 6.1 v high 430%
Kununurra Aero 31.8 +1.2 36.2 24th 14.8 -0.3 7.8 18th 0 1.5 lowest 0%
Warmun 31.3 +1.8 36.0 23rd 14.7 +2.0 7.5 17th 6.5 5.3 high 123%
West Kimberley (district 03)
Bidyadanga 31.5 +2.0 35.7 1st 17.1 +3.1 9.6 18th 0 8.3 lowest 0%
Broome Airport 30.9 +2.0 35.1 27th 16.6 +2.9 9.4 18th 0 6.8 lowest 0%
Curtin Aero 32.0 +1.1 35.2 26th 16.8 +1.4 6.7 18th 0 8.9 lowest 0%
Cygnet Bay 28.7 +0.6 32.1 6th 17.0 +2.2 11.4 19th 0.3 11.2 average 3%
Derby Aero 32.0 +1.3 36.2 25th 16.9 +2.2 9.3 19th 0 8.1 lowest 0%
Fitzroy Crossing Aero 31.0 +0.2 35.1 8th 13.7 +1.5 6.6 18th 17.2 6.6 v high 261%
De Grey (district 04)
Bedout Island 26.1   29.7 6th 21.1   17.8 10th
Karratha Aero 25.5 -0.7 31.2 31st 16.5 +2.8 10.3 11th 58.6 14.7 v high 399%
Legendre Island 24.6   28.3 31st 19.2   15.2 10th
Mandora 30.4 +1.5 34.5 27th 15.0 +2.5 4.1 16th 0 8.9 lowest 0%
Marble Bar 28.0 +0.9 33.6 31st 15.1 +3.1 7.8 17th 0.6 17.7 average 3%
Pardoo Station     33.0 27th 15.3 +2.3 9.5 17th 0.6 9.7 average 6%
Port Hedland Airport 28.6 +1.4 32.5 31st 16.1 +3.7 10.7 17th 0 11.0 lowest 0%
Roebourne Aero 27.0 -0.7 34.7 31st 15.4 +3.4 8.5 11th 31.6 10.3 high 307%
Fortescue (district 05)
Barrow Island Airport 23.2 -0.5 25.7 8th 19.3 +1.8 16.1 13th 112.8 17.1 v high 660%
Learmonth Airport 22.8 -1.4 27.5 30th 14.0 +2.6 7.0 13th 88.2 22.6 v high 390%
Mardie 26.3 -1.4 31.2 28th 16.2 +4.4 10.1 14th 144.0 14.1 v high 1021%
Onslow Airport 24.7 -0.7 31.2 30th 15.7 +2.8 10.6 13th 115.4 20.7 highest 557%
Wittenoom 23.2 -1.0 31.5 31st 13.4 +1.9 7.6 17th 25.6 14.3 high 179%
West Gascoyne (district 06)
Carnarvon Airport 22.5 +0.1 29.3 29th 11.5 +0.6 4.3 14th 41.2 43.8 average 94%
Denham 21.1 -0.7 25.5 29th 13.4 +0.7 10.0 4th 75.8 40.0 high 190%
Emu Creek Station 23.9 -1.6 31.0 30th 14.1 +2.9 6.8 14th 99.8 22.4 v high 446%
Murchison 19.4 -1.6 29.8 29th 8.0 +1.7 2.0 13th 60.0 29.6 high 203%
Shark Bay Airport 21.8 -0.9 28.8 29th 11.3 +0.7 4.5 14th 80.2 31.7 v high 253%
East Gascoyne (district 07)
Newman Aero 21.0 -1.9 29.8 30th 9.3 +3.1 1.8 13th 28.8 15.8 high 182%
Paraburdoo Aero 22.3 -2.5 29.9 30th 12.0 +2.2 5.3 10th 42.6 14.8 v high 288%
Murchison (district 07A)
Meekatharra Airport 18.3 -0.8 28.1 29th 8.3 +0.9 1.6 13th 35.0 21.3 high 164%
Mount Magnet Aero 17.4 -1.4 28.4 29th 7.6 +0.6 2.1 13th 29.8 30.0 average 99%
Paynes Find 17.3 -1.2 27.3 29th 5.8 +0.3 -0.7 13th 36.6 35.4 average 103%
North Coast (district 08)
Dalwallinu 15.6 -1.3 23.3 29th 5.5 -0.3 -0.4 13th 42.2 48.1 average 88%
Geraldton Airport 18.9   25.3 29th 8.4   1.9 13th 126.4
Kalbarri 21.3 -0.5 25.4 1st 9.9 +0.2 4.7 24th 105.4 70.4 high 150%
Morawa Airport 17.7 -0.9 25.4 29th 6.2 +0.1 0.8 13th 57.0 44.2 high 129%
North Island 20.4 -0.7 25.5 29th 15.1 -0.2 11.9 9th 73.8 70.9 average 104%
Wongan Hills 16.0 -1.1 22.1 29th 5.7 -0.9 1.5 25th 68.6 69.5 average 99%
Central Coast (district 09)
Bickley 14.5 -0.6 19.3 15th 6.3 -0.9 1.5 13th 193.2 215.2 average 90%
Garden Island HSF 16.8 -1.0 20.9 29th 10.2 -0.9 6.0 13th 75.0 112.9 low 66%
Gingin Aero 17.6 -0.7 23.5 29th 6.0 -0.2 -1.2 13th 145.0 125.8 average 115%
Gosnells City 18.0 -0.7 23.0 29th 7.6 -1.1 1.6 13th 158.5 160.7 average 99%
Jandakot Aero     21.9 28th     -1.6 13th 149.6 173.1 low 86%
Jurien Bay 19.3 -0.2 23.2 2nd 8.9 -0.4 3.8 25th 121.7 114.2 average 107%
Karnet 15.1 -0.3 19.6 29th 5.2 -1.0 -0.5 24th 130.8 215.3 low 61%
Lancelin 18.5 -0.7 23.0 15th 8.2 -1.7 2.0 13th 118.2 120.0 average 99%
Medina Research Centre 17.8 -0.5 21.9 28th     1.0 24th 94.6 144.4 low 66%
Pearce RAAF 17.6 -0.2 23.4 29th 7.1 -1.1 0.5 13th 113.6 133.5 average 85%
Perth Airport 17.7 -0.2 22.6 29th 7.4 -0.6 0.9 24th 119.6 155.2 low 77%
Perth Metro 17.7 -0.7 22.5 29th 7.5 -0.2 0.6 13th 139.6 167.8 average 83%
Rottnest Island 16.9 -0.8 21.3 29th 11.4 -0.9 8.4 24th 98.8 113.6 average 87%
Swanbourne 17.5 -0.9 22.0 2nd 9.0 -0.6 3.4 13th 157.8 148.2 average 106%
South Coast (district 09A)
Albany     21.4 16th 9.2 +1.0 6.0 13th 123.0 142.5 average 86%
Albany Airport 15.7   21.1 16th 6.8   1.0 13th 117.8
Bridgetown 14.9 -0.8 19.5 28th 4.1 -0.4 -2.4 13th 139.8 124.3 average 112%
Bunbury 16.3 -1.0 20.2 29th 6.2 -0.8 -1.1 13th 110.6 139.8 low 79%
Busselton Aero 16.1 -0.7 19.9 29th 6.3 -0.5 1.0 4th 181.0 133.8 high 135%
Cape Leeuwin 16.3 -0.1 20.1 29th 11.3 0.0 7.6 14th 139.0 180.3 low 77%
Cape Naturaliste 16.5 +0.2 20.5 28th 9.8 -0.6 5.5 4th 149.2 160.7 average 93%
Collie East 15.5 -0.8 20.2 28th 3.7 -0.1 -3.7 13th 112.4 125.8 average 89%
Donnybrook 16.1 -0.4 21.2 28th 5.7 0.0 0.8 13th 197.2 185.9 average 106%
Dwellingup 14.9 -0.1 19.3 28th 4.7 -0.8 -1.6 13th 128.8 233.8 low 55%
Esperance 16.8 -0.4 24.4 16th 8.2 -0.1 3.7 2nd 54.0 95.5 v low 57%
Esperance Aero 15.8 -0.6 22.5 16th 7.3 -0.3 3.0 5th 65.8 78.3 average 84%
Jarrahwood 15.7 -0.7 20.9 28th 4.2 -0.7 -2.5 13th 324.6 179.6 v high 181%
Mandurah 16.7 -0.8 20.0 29th 9.5 -1.1 4.5 13th 69.0 113.4 low 61%
Manjimup 14.2 -0.2 18.7 28th 5.9 -0.5 1.4 13th 206.2 173.9 high 119%
North Walpole 15.2 -0.8 19.7 29th 8.6 -0.3 4.0 13th 194.4 177.3 average 110%
Rocky Gully 13.8 -0.9 18.5 29th 5.9 -0.6 -0.4 13th 119.0 102.7 average 116%
Shannon 13.7 -1.2 17.4 29th 6.4 -0.1 0.8 13th 203.4 170.7 average 119%
Witchcliffe 15.7 -0.7 19.4 29th 7.8 -0.2 2.2 6th 242.0 193.3 high 125%
North Central (district 10)
Bencubbin 15.3 -1.1 24.0 29th 5.4 -0.6 0.4 13th 29.3 45.5 low 64%
Cunderdin Airfield 15.8 -1.2 22.1 29th 4.1 -0.5 -0.6 25th 49.2 50.4 average 98%
Merredin 15.7 -0.6 22.5 29th 4.3 -1.2 -0.5 24th 39.4 50.5 average 78%
Northam 16.2 -0.7 22.8 29th 3.9 -1.5 -1.8 13th 71.2 82.2 average 87%
York 16.5 -0.5 22.0 29th 2.9 -0.7 -2.7 13th 84.2 71.4 average 118%
South Central (district 10A)
Beverley 16.0 -0.9 21.8 29th 3.4 -1.7 -2.4 13th 65.8 77.2 average 85%
Brookton 15.1 -1.0 20.5 29th 3.4 -1.1 -0.6 1st 49.3 84.9 low 58%
Corrigin 14.9 -0.5 21.2 29th 3.0 -1.9 -2.9 13th 38.2 59.5 low 64%
Hyden 15.8 -0.6 23.0 16th 3.2 -1.5 -2.5 24th 48.9 47.9 average 102%
Jacup 14.8 -0.9 21.0 16th 5.0 -0.6 1.3 20th 29.8 50.7 low 59%
Katanning 13.6 -1.2 18.5 15th 4.9 -1.1 0.2 13th 39.0 61.5 low 63%
Lake Grace 14.4 -1.2 21.2 29th 4.2 -1.1 -0.2 24th 23.2 36.8 low 63%
Narembeen 15.7 -0.8 22.3 29th 4.1 -1.3 -1.0 24th 44.1 49.8 average 89%
Narrogin 14.3 -0.3 19.5 29th 3.9 -1.3 -2.2 13th 35.6 86.1 v low 41%
Newdegate Research Station 14.4 -0.8 21.0 16th 3.7 -0.4 -1.3 13th 35.4 47.1 average 75%
Ravensthorpe 15.8 -0.5 22.1 16th 6.1 -0.7 1.5 2nd 45.8 47.3 average 97%
Wagin 14.5 -0.9 19.8 15th 4.8 -0.8 -1.9 13th 26.4 69.9 v low 38%
Wandering 14.8 -1.0 20.0 15th 2.9 -1.0 -3.8 13th 75.0 92.5 low 81%
Eucla (district 11)
Balladonia 16.8 -0.8 25.8 29th 5.2 +0.4 -1.2 14th 33.9 20.9 high 162%
Eucla 17.6 -0.4 26.1 29th 7.8 +0.7 2.1 14th 26.2 25.3 average 104%
Eyre 17.5 -0.7 23.5 29th 6.0 +0.3 -1.8 14th 39.4 35.3 average 112%
Forrest 17.8 -0.9 26.2 29th 5.6 +0.6 -0.7 14th 22.6 16.2 average 140%
Red Rocks Point 17.4 -1.1 25.2 29th 8.4 +0.9 2.5 14th 55.0 41.2 high 133%
South East (district 12)
Bulga Downs 17.0 -2.3 28.5 29th 5.3 +0.4 -0.1 15th 29.4 23.9 average 123%
Kalgoorlie-Boulder Airport 16.0 -0.8 25.2 29th 5.7 +0.7 -1.2 23rd 22.2 24.8 average 90%
Laverton Aero 16.6 -1.8 26.5 29th 6.7 +0.8 0.0 12th 39.8 17.6 high 226%
Leinster Aero 17.2 -1.5 27.7 29th 6.8 +0.7 0.0 13th 29.6 18.7 high 158%
Leonora Aero 17.0   27.8 29th 6.8   0.1 14th 32.8 19.3 v high 170%
Munglinup West 16.1 -0.5 23.7 16th 6.1 -0.6 2.2 23rd 40.2 43.8 average 92%
Norseman Aero 15.7 -1.5 23.6 29th 3.6 -0.4 -2.2 2nd 24.6 23.8 average 103%
Salmon Gums Res.Stn. 15.8 -0.3 23.1 16th 4.5 -0.1 -3.1 2nd 32.6 36.8 average 89%
Southern Cross Airfield 15.4 -1.2 24.0 29th 3.5 +0.1 -2.9 23rd 48.6 35.3 high 138%
Yeelirrie 18.2 -1.1 28.4 29th 5.4 +1.9 -2.6 13th 26.6 17.4 high 153%
North East (district 13)
Carnegie 20.1 -1.2 29.4 30th 7.2 +1.3 0.1 16th 48.5 12.4 high 391%
Giles Meteorological Office 20.2 +0.2 28.0 31st 7.0 +0.2 0.8 14th 15.6 11.2 high 139%
Telfer Aero 26.3 +1.0 32.4 31st 12.8 +2.2 5.5 17th 0 12.5 lowest 0%
Warburton Airfield 20.0 -0.7 29.2 31st 7.1 +1.4 1.7 18th 13.6 12.7 average 107%
Offshore Islands (district 200)
Browse Island 29.1   30.8 25th 25.4   22.9 17th
Christmas Island Aero 27.6 +1.3 29.3 1st 23.6 +1.1 21.6 13th 357.2 99.7 v high 358%
Cocos Island Airport 28.5 +0.4 30.3 27th 25.1 +1.1 23.3 18th 46.4 212.4 v low 22%
Rowley Shoals 27.1   30.2 8th 24.8   22.2 14th
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.

Notes

The Monthly climate summary 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. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 11 am on Monday 1 August 2016. 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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
Enquiries