Western Australia in autumn 2016: Cool and wet in the south west, warm in the north

Autumn rainfall was slightly above average for Western Australia as a whole, with above average rainfall in the south west and the east. Both mean maximum temperature and mean minimum temperature were very much above average for the State as a whole and the warmest autumn since 2005. Below average mean maximum temperatures were only recorded across the south west of the State.

  • Above average autumn mean maximum temperature
  • Record maximum temperatures across the northern Kimberley coast
  • Above average mean minimum temperature for WA
  • Record temperatures across the north west
  • Slightly above average rainfall for WA
  • Wettest autumn for the Southwest Land Division since 2005

Rainfall in autumn for Western Australia was slightly above average for the State as a whole, although a large spatial variation occurred across the State. Below average rainfall was recorded across much of the west Gascoyne and the Pilbara, with very low rainfall totals in these regions. A continuation of the poor northern wet season into autumn resulted in Curtin Aerodrome in the Kimberley recording its lowest autumn rainfall on record, whilst a couple of sites in the Pilbara reported their lowest autumn rainfall in more than 20 years. In contrast, very much above average rainfall was recorded in a band through inland parts of the South West Land Division (SWLD), with a number of sites in this region recording their highest total autumn rainfall for at least 20 years and two sites in the Lower West recording their wettest autumn on record. A cloudband in late March brought heavy rainfall to parts of the SWLD and some sites recorded their highest autumn daily rainfall on record as a result. For the SWLD, autumn 2016 rainfall was above average; the wettest autumn since 2005.

Mean maximum temperatures were above average across the northern half of Western Australia in autumn, with some sites in the Kimberley and Pilbara recording their highest autumn mean maximum temperature on record. Below average maximum temperatures were recorded across much of the SWLD, with a few sites recording their lowest autumn mean daily maximum temperature, and several recording their lowest autumn mean daily maximum temperature for at least 20 years. Averaged across the State the mean maximum temperature anomaly was +1.29 °C, the fifth highest since comparable records commenced in 1910, and highest since the record high in 2005.

Mean minimum temperatures were above average for the State as a whole (+1.41  °C), and were the fourth highest on record, with nearly all areas reporting above average night-time temperatures during autumn. Some sites in the Kimberley and Pilbara had their highest autumn mean daily minimum temperature on record. The SWLD also reported an above average autumn for minimum temperatures.

Unusually high day-time temperatures in March and early April in the Kimberley, Pilbara, and Interior saw several sites break autumn maximum temperature records, whilst unusually high overnight temperatures in March in the Kimberley and Pilbara, and also in the Central Wheat Belt, resulted in record high autumn minima for sites in those regions.

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Extremes in autumn 2016
Hottest day 47.0 °C at Mardie on 3 Mar
Warmest days on average 38.1 °C at Marble Bar
Coolest days on average 20.1 °C at Shannon
Coldest day 11.5 °C at Shannon on 21 May
Coldest night -2.5 °C at Salmon Gums Res.Stn. on 31 May
Coolest nights on average 10.2 °C at Collie East
Warmest nights on average 28.2 °C at Rowley Shoals
Warmest night 32.0 °C at Onslow Airport on 4 Mar
32.0 °C at Wittenoom on 4 Mar
Warmest on average overall 31.2 °C at Wyndham Aero
Coolest on average overall 15.8 °C at Shannon
Wettest overall 353.6 mm at Kimbolton
Wettest day 134.2 mm at Mandora on 7 May
Strongest wind gust 119 km/h at Cape Leeuwin on 15 May

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 autumn daily rainfall
New record
(mm)
Old
record
Years of
record
Doongin Peak 59.6 on 27 Mar 58.9 on 24 Apr 1953 114
Youndegin 82.2 on 27 Mar 61.7 on 25 Mar 1953 69
Gingin Aero 49.6 on 27 Mar 40.0 on 27 May 1999 21
York 51.5 on 27 Mar 48.8 on 30 Mar 1997 21
Stokes Inlet 62.8 on 24 Mar 47.6 on 26 Mar 2013 20



Record highest autumn total rainfall
New record
(mm)
Old
record
Years of
record
Average for
autumn
Christmas Island Aero 1240.6 1232.4 in 2010 41 717.4
Mount Helena 291.9 281.8 in 2005 30 163.3
Huntly 348.6 346.2 in 2005 25 235.8

Highest autumn total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
autumn
Belka 215.0 253.9 in 1953* 86.3
Boyup Brook 218.9 228.6 in 1960* 142.8
Pearce RAAF 260.2 281.7 in 1974 136.9
Roelands 303.4 338.3 in 1974 197.2
Narembeen 196.4 274.3 in 1974* 83.0
Quairading 193.1 216.8 in 1974* 91.0
Shackleton 227.3 230.1 in 1953* 88.6
Fort Hill 209.0 216.5 in 1984* 90.2
Redlands 154.6 230.0 in 1984* 104.2
New Norcia 175.4 218.4 in 1984* 113.8
Wyalkatchem 203.0 226.4 in 1984* 84.4
Gidgegannup 295.8 368.0 in 1984* 177.8
Allan Rocks 137.4 142.4 in 1992 84.3
Amery Acres 153.8 155.4 in 1971* 85.5
Chesalon 197.6 255.4 in 1993 100.7
Lake Carmody 178.9 193.6 in 1992* 82.1
Ravensthorpe 232.8 =232.8 in 1993 110.2
Maida Vale 224.8 283.0 in 1984* 160.7

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




Record lowest autumn total rainfall
New record
(mm)
Old
record
Years of
record
Average for
autumn
Curtin Aero 12.2 29.4 in 2002 22 217.1

Lowest autumn total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
autumn
Emu Creek Station 6.2 3.0 in 1991 97.7
Warrawagine 18.8 0.0 in 1994* 96.9

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




Record highest autumn temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Giles Meteorological Office 42.2 on 1 Mar = 42.2 on 6 Mar 1959 60 28.9
Bidyadanga 44.0 on 25 Mar 43.1 on 16 Mar 1986 58 34.5
Onslow Airport 46.3 on 3 Mar 46.0 on 4 Mar 1998 51 33.0
Telfer Aero 45.2 on 1 Mar 45.1 on 4 Mar 1985 42 33.6
Troughton Island 36.3 on 9 Apr 36.1 on 25 Apr 1968 38 31.9
Derby Aero 41.9 on 30 Mar 41.8 on 2 Mar 1973 32 34.5
Cygnet Bay 39.5 on 25 Mar 38.0 on 23 Apr 2005 30 32.7



Record highest autumn mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Wittenoom 35.7 = 35.7 in 2005 62 32.5
Warmun 37.0 36.8 in 1990 53 34.4
Onslow Airport 34.9 34.7 in 2002 49 33.0
Troughton Island 33.7 33.2 in 2002 36 31.9
Derby Aero 36.9 36.6 in 2005 30 34.5
Kununurra Aero 36.7 36.6 in 1988 30 34.6
Cygnet Bay 35.1 35.0 in 2005 28 32.7
Mount Elizabeth 33.4 = 33.4 in 2002 22 31.7
Argyle Aerodrome 36.3 36.2 in 2002 21 34.1

Highest autumn mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
autumn
Mardie 36.4 37.3 in 1994 34.9



Record lowest autumn mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Swanbourne 24.3 24.6 in 1997 22 25.6
Bunbury 23.3 23.5 in 2007 20 24.4
Rocky Gully 20.6 20.7 in 2015 20 22.0

Lowest autumn mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
autumn
Northam 24.8 23.0 in 1968* 26.1
Narembeen 24.1 24.0 in 1974* 25.7
Beverley 24.7 24.2 in 1984* 26.2
Wongan Hills 25.0 23.9 in 1984* 26.3
Pearce RAAF 25.6 25.1 in 1992 26.3
Brookton 23.9 23.4 in 1993 25.0
Wagin 22.7 22.1 in 1993 23.6
Denham 27.6 26.1 in 1993* 28.5

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




Record highest autumn daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Broome Airport 30.6 on 6 Mar 30.5 on 30 Mar 2010 77 22.1
Onslow Airport 32.0 on 4 Mar 30.5 on 20 Mar 2014 50 20.9
Christmas Island Aero 26.5 on 24 Apr 26.3 on 10 May 2014 44 23.4
Troughton Island 30.2 on 4 Mar 30.0 on 31 Mar 2010 38 26.2
Goomalling 26.5 on 15 Mar 26.0 on 8 Mar 1969 37 12.5
Derby Aero 29.5 on 6 Mar 29.1 on 1 Mar 2005 32 22.2
Cygnet Bay 29.2 on 17 Mar 29.1 on 19 Mar 2004 30 22.0
Mount Elizabeth 25.5 on 6 Mar 24.2 on 8 Mar 2004 23 16.5
Morawa Airport 28.1 on 14 Mar 28.0 on 13 Mar 2015 20 14.3



Record lowest autumn temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Salmon Gums Res.Stn. -2.5 on 31 May = -2.5 on 22 May 1959 78 9.9



Record highest autumn mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Port Hedland Airport 23.2 22.9 in 2005 67 21.1
Bidyadanga 24.4 24.1 in 1958 56 21.8
Christmas Island Aero 24.4 24.2 in 1998 41 23.4
Telfer Aero 23.3 21.9 in 1992 41 20.0
Troughton Island 28.1 27.7 in 2010 36 26.2
Derby Aero 24.6 24.0 in 2010 30 22.2
Argyle Aerodrome 24.4 24.3 in 1998 21 22.2
Paraburdoo Aero 21.2 = 21.2 in 2005 20 19.2

Highest autumn mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
autumn
Broome Airport 24.6 25.0 in 1992 22.1
Halls Creek Airport 21.8 22.7 in 1992 20.0
Mandora 22.6 22.9 in 1992 20.5



Record highest autumn mean temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Broome Airport 29.6 29.4 in 2010 76 27.7
Christmas Island Aero 26.7 26.6 in 2014 41 25.8
Telfer Aero 29.9 29.3 in 2005 40 26.8
Troughton Island 30.9 30.2 in 2002 36 29.1
Derby Aero 30.8 29.9 in 2010 30 28.4
Curtin Aero 30.3 29.9 in 1992 24 28.5
Karratha Aero 29.6 29.5 in 2005 22 27.8
Argyle Aerodrome 30.4 30.3 in 1998 21 28.1

Highest autumn mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
autumn
Halls Creek Airport 28.5 28.8 in 1992 26.5
Kununurra Aero 29.7 29.9 in 1992 28.1



Summary statistics for autumn 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2016
Diff
from
average
Highest for
autumn
2016
Mean for
autumn
2016
Diff
from
average
Lowest for
autumn
2016
Total for
autumn
2016
Average
for
autumn
Rank of
autumn
2016
Fraction of
autumn
average
North Kimberley (district 01)
Doongan 34.4 +1.9 37.0 2 Mar     13.5 26 Apr 285.3 285.1 average 100%
Kalumburu 36.8 +2.9 40.2 18 Apr 22.2 +1.7 15.6 25 Apr 254.0 263.4 average 96%
Mount Elizabeth 33.4 +1.7 37.0 13 Apr 18.7 +2.2 10.4 16 May 225.0 218.1 average 103%
Troughton Island 33.7 +1.8 36.3 9 Apr 28.1 +1.9 24.7 11 May 76.8 208.4 low 37%
Wyndham Aero 37.7 +2.2 41.2 5 Apr 24.7 +2.0 18.1 15 May 180.6 185.4 average 97%
East Kimberley (district 02)
Argyle Aerodrome 36.3 +2.2 41.2 3 Mar 24.4 +2.2 18.0 12 May 79.2 183.5 average 43%
Halls Creek Airport 35.1 +2.1 40.3 4 Mar 21.8 +1.8 14.5 13 May
Kununurra Aero 36.7 +2.1 40.3 2 Mar 22.8 +1.2 15.2 15 May 213.0 188.7 average 113%
Warmun 37.0 +2.6 42.0 4 Mar 22.4 +2.1 16.0 13 May 173.8 152.7 average 114%
West Kimberley (district 03)
Bidyadanga 35.7 +1.2 44.0 25 Mar 24.4 +2.6 17.8 17 May 98.0 146.2 average 67%
Broome Airport 34.6 +1.3 41.0 10 Apr 24.6 +2.5 17.3 16 May
Curtin Aero 37.3 +2.1 41.8 31 Mar 23.2 +1.4 17.3 18 May 12.2 217.1 lowest 6%
Cygnet Bay 35.1 +2.4 39.5 25 Mar     17.9 18 May 114.0 249.2 low 46%
Derby Aero 36.9 +2.4 41.9 30 Mar 24.6 +2.4 17.1 13 May 106.0 176.3 average 60%
Fitzroy Crossing Aero 37.4 +1.9 41.7 1 Mar 22.2 +2.0 14.9 13 May 211.0 163.1 average 129%
De Grey (district 04)
Bedout Island 32.7   36.3 10 Apr 26.6   22.4 9 May
Karratha Aero 35.1 +1.7 42.8 26 Mar 24.0 +1.8 17.1 30 May 21.0 94.8 low 22%
Legendre Island 32.4   40.5 3 Mar 25.3   21.1 31 May
Mandora 36.5 +1.5 44.2 25 Mar 22.6 +2.1 15.0 16 May 135.2 118.3 average 114%
Marble Bar 38.1 +3.2 46.5 2 Mar 23.9 +2.6 15.4 9 May
Port Hedland Airport 36.3 +2.1 43.6 11 Mar 23.2 +2.1 14.8 10 May 8.8 97.4 v low 9%
Roebourne Aero 37.5 +2.6 45.0 2 Mar 22.3 +1.1 13.6 9 May 4.8 77.6 v low 6%
Fortescue (district 05)
Barrow Island Airport 31.5 +1.0 39.0 4 Mar 24.3 +0.2 19.6 10 May 28.8 159.2 low 18%
Learmonth Airport 34.3 +1.7 43.2 4 Mar 19.8 0.0 9.2 9 May
Mardie 36.4 +1.5 47.0 3 Mar 22.4 +1.6 12.9 31 May 29.6 105.8 low 28%
Onslow Airport 34.9 +1.9 46.3 3 Mar 22.2 +1.3 14.4 9 May 17.2 135.0 low 13%
Wittenoom 35.7 +3.2 43.5 3 Mar 23.0 +2.5 12.0 9 May 35.6 125.4 low 28%
West Gascoyne (district 06)
Carnarvon Airport 29.1 +0.1 39.2 9 Mar 19.2 +0.5 8.5 23 May 6.2 64.5 v low 10%
Denham 27.6 -0.9 40.0 9 Mar 19.6 +0.2 12.1 23 May 11.0 65.6 v low 17%
Shark Bay Airport 30.0 -0.8 42.8 9 Mar 18.0 -0.1 8.6 23 May 13.8 57.1 low 24%
East Gascoyne (district 07)
Newman Aero 34.0 +2.8 42.0 2 Mar 20.0 +3.0 7.0 9 May 30.4 79.6 low 38%
Paraburdoo Aero 35.3 +2.3 42.9 3 Mar 21.2 +2.0 11.0 31 May 29.2 93.9 low 31%
Murchison (district 07A)
Meekatharra Airport 30.3 +1.2 40.7 12 Mar 17.7 +0.9 7.1 23 May 73.6 72.1 average 102%
Mount Magnet Aero 28.6 +0.1 41.1 10 Mar 16.4 +0.4 5.5 23 May 78.8 76.5 average 103%
North Coast (district 08)
Dalwallinu 25.2 -1.7 38.9 10 Mar 13.8 +0.6 5.1 8 May 175.8 78.7 v high 223%
Geraldton Airport 27.3   39.1 24 Mar 15.8   7.1 2 May
Kalbarri 28.3 -1.1 39.3 7 Mar 16.5 +0.2 6.1 9 May 63.5 89.9 average 71%
Morawa Airport 27.7 -1.0 40.8 10 Mar 14.9 +0.6 5.4 9 May 140.6 76.4 v high 184%
North Island 25.6 -0.7 33.1 7 Mar 19.5 -0.8 7.9 12 May 43.2 72.0 average 60%
Wongan Hills 25.0 -1.3 38.5 13 Mar 13.3 +0.1 4.0 9 May 191.0 95.5 v high 200%
Central Coast (district 09)
Bickley 22.4 -1.3 37.2 14 Mar 13.0 +0.5 6.1 30 May 310.0 213.9 high 145%
Garden Island HSF 23.4 -0.8 39.5 14 Mar 16.6 +0.5 9.3 12 May 137.2 134.8 average 102%
Gingin Aero 25.7 -1.0 41.2 14 Mar 12.5 +0.3 1.2 8 May 294.0 130.3 v high 226%
Gosnells City 25.7 -0.9 40.3 13 Mar 15.2 +0.6 6.2 12 May 209.0 166.9 high 125%
Jandakot Aero 25.0 -0.8 40.7 14 Mar 13.3 +0.9 2.1 8 May 217.8 167.4 high 130%
Jurien Bay 25.9 -0.5 42.5 14 Mar 14.7 +0.6 5.6 10 May 194.6 124.0 v high 157%
Lancelin 25.0 -0.6 42.0 14 Mar 15.0 +0.4 8.1 31 May 176.5 130.1 high 136%
Medina Research Centre     40.9 14 Mar 13.7 +0.4 3.5 8 May 191.4 161.0 high 119%
Pearce RAAF 25.6 -0.7 40.9 14 Mar 13.6 +0.2 2.6 8 May 260.2 136.9 v high 190%
Perth Airport 25.3 -0.4 40.1 14 Mar 13.8 +0.7 3.1 8 May 180.4 156.6 high 115%
Perth Metro 25.2 -0.7 39.8 14 Mar 14.4 +0.7 4.6 8 May 197.0 180.2 high 109%
Rottnest Island 23.3 -0.4 39.4 14 Mar 17.2 +0.1 10.5 22 May 139.6 129.6 average 108%
Swanbourne 24.3 -1.3 40.7 14 Mar 15.6 +0.6 8.1 31 May 229.0 156.4 high 146%
South Coast (district 09A)
Albany 20.6 0.0 36.0 15 Mar 14.1 +1.4 6.5 31 May 236.2 223.6 average 106%
Albany Airport 20.9   37.6 15 Mar 11.9   2.9 31 May
Bridgetown 22.2 -1.3 36.3 14 Mar 10.5 +1.2 0.0 27 May 265.4 175.3 high 151%
Bunbury 23.3 -1.1 37.8 14 Mar 12.6 +0.8 3.8 27 May 259.4 157.8 high 164%
Busselton Aero 23.3 -0.9 36.6 14 Mar 11.7 +0.5 3.2 27 May 175.4 159.3 average 110%
Cape Leeuwin 21.1 0.0 29.2 23 Apr 16.1 +0.8 9.8 30 May 153.0 225.8 low 68%
Cape Naturaliste 22.8 +0.9 35.1 13 Mar 14.4 +0.5 8.7 30 May 172.8 181.8 average 95%
Collie East 23.0 -1.1 36.7 14 Mar 10.2 +1.2 0.6 31 May 252.6 160.8 high 157%
Donnybrook 24.0 0.0 38.6 14 Mar 12.2 +1.7 4.0 22 May 303.6 208.7 v high 145%
Dwellingup 22.9 +0.2 37.5 14 Mar 11.8 +1.5 2.0 31 May 323.6 251.2 high 129%
Esperance 22.7 -0.2 38.4 10 Mar 13.6 +0.4 5.2 31 May 174.4 148.0 high 118%
Esperance Aero 23.2 0.0 37.7 10 Mar 12.7 +0.1 4.4 31 May 164.0 142.9 average 115%
Jarrahwood 23.4 -0.5 37.4 14 Mar 10.5 +1.4 0.4 27 May 311.4 197.6 v high 158%
Mandurah 23.9 -0.5 39.6 13 Mar 16.0 +0.2 8.0 30 May 138.2 151.9 average 91%
Manjimup 21.5 +0.3 36.7 14 Mar 11.5 +0.8 4.4 30 May
North Walpole 20.6 -1.0 33.9 15 Mar 13.0 +0.2 5.6 30 May 319.0 253.3 high 126%
Rocky Gully 20.6 -1.4 35.1 15 Mar 11.2 +0.3 2.9 30 May 250.4 167.6 high 149%
Shannon 20.1 -1.5 35.1 14 Mar 11.5 +0.7 3.6 31 May 320.8 234.3 high 137%
Witchcliffe 22.1 -0.6 36.4 14 Mar 12.4 +1.1 3.9 30 May 257.8 230.6 high 112%
North Central (district 10)
Bencubbin 24.4 -1.5 38.7 10 Mar 13.3 +0.6 4.9 1 May 112.2 83.2 high 135%
Cunderdin Airfield 24.8 -1.7 38.6 10 Mar 12.7 +0.7 2.8 31 May 182.4 78.4 v high 233%
Merredin 24.5 -1.0 39.2 10 Mar 12.8 +0.1 2.4 17 May 173.6 85.1 v high 204%
Northam 24.8 -1.3 38.2 9 Mar 12.7 +0.8 2.0 31 May 183.7 97.6 v high 188%
York 24.7 -1.6 38.2 14 Mar 11.9 +1.1 1.5 31 May 177.2 88.3 v high 201%
South Central (district 10A)
Beverley 24.7 -1.5 37.8 14 Mar 12.5 +1.2 1.6 31 May 168.0 93.6 v high 179%
Brookton 23.9 -1.1 37.6 14 Mar 11.6 +0.5 1.7 31 May 195.9 101.6 v high 193%
Corrigin 23.5 -0.8 37.0 15 Mar 11.7 +0.7 1.1 31 May 139.3 91.5 high 152%
Hyden 24.3 -1.3 37.5 3 Mar 11.5 +0.5 1.7 17 May 153.4 83.2 v high 184%
Jacup 22.0 -0.8 37.1 10 Mar 10.9 +0.3 1.5 30 May
Katanning 21.5 -1.8 35.6 14 Mar 11.4 +0.5 3.2 31 May 179.4 102.0 high 176%
Lake Grace 22.8 -1.4 36.2 10 Mar 12.1 +0.4 2.6 31 May 126.6 78.3 v high 162%
Narembeen 24.1 -1.6 37.9 10 Mar     3.1 17 May 196.4 83.0 v high 237%
Narrogin 22.6 -0.4 36.6 14 Mar 11.4 +0.9 0.9 31 May 176.5 113.5 high 156%
Newdegate Research Station 22.7 -1.4 37.3 10 Mar 10.6 +0.5 0.6 27 May 160.8 93.3 v high 172%
Ongerup 22.0 -0.5 35.2 15 Mar 11.6 +0.6 1.2 30 May 128.0 92.4 high 139%
Ravensthorpe 22.5 -1.0 37.0 10 Mar     4.0 31 May 232.8 110.2 v high 211%
Wagin 22.7 -0.9 36.0 15 Mar     2.0 31 May 163.3 103.9 high 157%
Wandering 23.1 -1.5 37.2 15 Mar 10.6 +1.2 -0.5 31 May
Eucla (district 11)
Eucla 23.6 +0.3 33.2 1 Apr 13.6 +0.3 3.7 23 May 91.6 80.9 average 113%
Eyre 24.8 +1.1 36.6 25 Apr 11.1 -0.6 -1.6 23 May 80.3 91.1 average 88%
Forrest 25.7 -0.2 35.4 11 Mar 12.4 +0.6 2.8 31 May 71.0 62.0 average 115%
Red Rocks Point 23.3 +0.2 35.3 25 Apr 14.4 +0.1 5.0 23 May 79.0 85.9 average 92%
South East (district 12)
Bulga Downs 28.0 -0.4 40.9 11 Mar 14.3 +0.3 3.9 23 May 101.0 71.7 high 141%
Kalgoorlie-Boulder Airport 24.9 -0.2 38.2 3 Mar 13.0 +0.5 2.5 30 May 36.8 72.0 low 51%
Laverton Aero 26.8 +0.4 38.8 3 Mar 14.9 +0.4 5.3 23 May 127.8 76.2 v high 168%
Leinster Aero 28.1 +0.7 40.0 3 Mar 15.6 +0.6 3.7 23 May 76.6 74.0 average 104%
Leonora Aero 27.1   40.5 3 Mar 14.9   3.4 23 May 116.0 65.6 v high 177%
Munglinup West 23.3 -0.6 38.0 10 Mar 12.0 +0.1 5.0 31 May 227.2 114.6 v high 198%
Norseman Aero 24.6 -0.4 37.1 10 Mar 10.9 +0.2 -2.1 31 May 55.8 76.1 average 73%
Salmon Gums Res.Stn. 23.6 -0.1 37.6 10 Mar 10.9 +1.0 -2.5 31 May 120.2 87.8 high 137%
Southern Cross Airfield 24.9 -1.1 39.8 3 Mar 12.0 +0.5 1.0 17 May 101.8 89.6 average 114%
Yeelirrie     40.7 4 Apr 14.1 +0.6 1.0 23 May 63.6 81.8 average 78%
North East (district 13)
Carnegie 31.2 +1.5 41.4 3 Mar     6.5 23 May 60.0 72.6 average 83%
Giles Meteorological Office 30.5 +1.6 42.2 1 Mar 17.1 +1.0 6.2 12 May 138.6 74.9 high 185%
Telfer Aero 36.5 +2.9 45.2 1 Mar 23.3 +3.3 11.6 9 May 73.0 112.0 average 65%
Warburton Airfield 30.9 +1.7 43.4 1 Mar 17.6 +2.4 6.7 13 May 55.4 65.4 average 85%
Offshore Islands (district 200)
Browse Island 31.8   34.0 11 Apr     26.6 25 May
Christmas Island Aero 29.1 +1.0 30.6 12 Apr 24.4 +1.0 22.3 24 Mar 1240.6 717.4 highest 173%
Cocos Island Airport 30.4 +0.7 32.1 15 Apr 26.1 +0.9 23.5 9 Apr
Rowley Shoals 30.3   34.2 23 Apr 28.2   22.3 7 May
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 Seasonal 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 Wednesday 1 June 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

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