Western Australia in July 2015: Wet finish in the southwest; above average temperatures

Though State-wide rainfall was near average, and southwest WA recorded below average rainfall, record high daily falls were reported in the Central West and Central Wheat Belt districts at the end of the month. For Western Australia as a whole, temperatures were above average.

  • Near average rainfall for WA; below average in southwest WA
  • Above average mean maximum and minimum temperatures for WA
  • Wettest July day on record in the Central Wheat Belt and Central West on the 31st

Below to very-much-below-average rainfall was reported in most of the South West Land Division (SWLD) and in southeast parts of the Gascoyne during July 2015. Pockets of above-average rainfall were observed in the northwest Kimberley, parts of the Pilbara, Gascoyne, northeastern SWLD, Goldfields, and western Eucla. When averaged across WA, total July rainfall was near average, whilst the SWLD as a whole and the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) recorded below-average rainfall. Significant falls occurred in the southwest Gascoyne and the northern Central West on the 20th and 21st, associated with a cloudband and a strong cold front. At the end of the month, thunderstorms with widespread moderate to heavy rainfall were reported in the southern Gascoyne, SWLD and southern Goldfields, associated with a cloudband and low pressure systems. Many sites, particularly in the Central Wheat Belt and Central West, including a large number with over 100 years of rainfall recording, registered their highest July daily rainfall on record on the 31st with daily totals in the 50 mm to 100 mm range. A few sites in the Central Wheat Belt recorded their wettest July since 1995 as a result.

Mean maximum temperatures were above average in July in most parts of northern and western WA, as well as in the northern Goldfields and parts of the Eucla. Averaged across WA, the mean maximum temperature was above average and the Lower Southwest also saw an above-average mean maximum temperature. Southerly winds and rain resulted in a very cold day in the Southeast Coastal on the 8th, and Ravensthorpe recorded a daily maximum temperature of 9.5 °C, the lowest maximum temperature recorded in WA for two years, since 7 July 2013 when a daily maximum temperature of 9.3 °C was recorded at Yeelirrie. A wet and cloudy day in the Gascoyne and Central West on the 13th resulted in a couple of sites registering their lowest July daily maximum temperatures on record. Unseasonably warm days were experienced in northern and central WA in the last week of July as several sites recorded their highest July temperature on record, including maxima in the low to mid-thirties in the Kimberley, Pilbara and western Gascoyne between the 28th and 30th, and maxima in the high twenties in the eastern Gascoyne and northern Goldfields on the 31st. Kalumburu and Wyndham Aerodrome both recorded a daily maximum temperature of 36.8 °C on the 26th, the highest temperature recorded in July in WA for five years, since 28 July 2010 when a daily maximum temperature of 37.1 °C was recorded at Wyndham Aerodrome.

Mean minimum temperatures were above to very much above average through much of WA in July. When averaged across the State, the mean minimum temperature was above average, and it was also above average for the Lower Southwest region. Unusually warm nights were experienced across large parts of the State in the last ten days of the month, and a number of sites in the SWLD reported their warmest July night on record on the 30th or 31st.

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Extremes in July 2015
Hottest day 36.8 °C at Kalumburu on the 26th
36.8 °C at Wyndham Aero on the 26th
Warmest days on average 32.4 °C at Kalumburu
Coolest days on average 15.0 °C at Rocky Gully
15.0 °C at Shannon
Coldest day 9.5 °C at Ravensthorpe on the 8th
Coldest night -4.0 °C at Norseman Aero on the 22nd
Coolest nights on average 2.4 °C at Yeelirrie
Warmest nights on average 24.7 °C at Browse Island
19.1 °C at Truscott
Warmest night 26.5 °C at Browse Island on the 13th
24.1 °C at Truscott on the 3rd
Warmest on average overall 26.4 °C at Browse Island
25.0 °C at Truscott
Coolest on average overall 10.2 °C at Newdegate Research Station
Wettest overall 203.2 mm at Capel North
Wettest day 118.0 mm at Capel North on the 31st
Strongest wind gust 106 km/h at Cape Leeuwin on the 20th

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
Ejanding 53.6 on the 31st 52.8 on the 31st in 1907 109
Nangeenan 47.0 on the 31st 37.6 on the 21st in 1960 109
Westbourne 74.0 on the 31st 64.4 on the 21st in 1990 109
Wongan Hills 86.2 on the 31st 45.8 on the 30th in 2001 109
Cowcowing 60.0 on the 31st 37.4 on the 11th in 1995 108
Kokardine 70.0 on the 31st 41.4 on the 18th in 1956 107
Wyalkatchem 52.0 on the 31st 39.9 on the 21st in 1960 106
Carnamah 50.8 on the 31st 49.6 on the 7th in 2004 105
Goomalling 45.0 on the 31st 38.2 on the 11th in 1995 105
Moningarin 74.0 on the 31st 37.3 on the 22nd in 1940 105
Nungarin 36.2 on the 31st 31.5 on the 16th in 1932 105
Ogilvie 65.2 on the 21st 50.0 on the 16th in 1974 105
Bullfinch 42.2 on the 31st 38.0 on the 20th in 1991 104
Trayning 39.6 on the 31st 34.0 on the 9th in 2010 104
Fort Hill 40.8 on the 31st 37.3 on the 16th in 1932 103
Ballidu 70.0 on the 31st 38.4 on the 18th in 1956 102
Barberton 57.6 on the 31st 45.6 on the 11th in 1995 101
Coorow 54.4 on the 31st 45.7 on the 25th in 1949 101
Mindalla 75.6 on the 31st 39.1 on the 18th in 1956 98
Westonia 36.8 on the 31st 33.0 on the 24th in 1917 98
Yorkrakine 57.5 on the 31st 44.0 on the 15th in 1978 92
Koorda 56.0 on the 31st 34.0 on the 22nd in 1940 90
Ygnattering 41.0 on the 31st 35.6 on the 16th in 1932 88
Gleneva 58.2 on the 21st 43.2 on the 20th in 1965 86
Cadoux 66.0 on the 31st 35.4 on the 11th in 1995 84
Kondut 57.4 on the 31st 41.1 on the 18th in 1956 84
Hines Hill 48.4 on the 31st 37.3 on the 16th in 1932 83
Wialki 53.8 on the 31st 35.1 on the 27th in 1940 82
Tamala 65.6 on the 21st 65.3 on the 1st in 1972 81
Bonnie Rock 35.0 on the 31st 31.5 on the 13th in 1963 80
Happy Valley 57.8 on the 31st 43.6 on the 20th in 2007 79
Gabbin 82.5 on the 31st 34.5 on the 16th in 1932 78
Nanyanine 49.0 on the 31st 45.0 on the 15th in 1978 77
Xantippe 69.0 on the 31st 39.0 on the 16th in 1978 77
Wialki South 62.0 on the 31st 36.0 on the 12th in 1995 74
Elena 60.0 on the 31st 43.4 on the 16th in 1978 73
Bindi Bindi East 87.6 on the 31st 42.6 on the 11th in 1995 72
Jourerdine 55.5 on the 31st 38.9 on the 27th in 1940 67
Goodlands 45.2 on the 31st 36.0 on the 16th in 1978 64
Spring Valley 40.0 on the 31st 33.0 on the 5th in 1963 57
Coppin Rock 40.0 on the 30th 26.8 on the 25th in 1988 54
Amery Acres 50.0 on the 31st 46.5 on the 21st in 1960 52
Coodernuppin 32.0 on the 31st 27.2 on the 13th in 1990 48
Jarrahwood 93.4 on the 31st 75.2 on the 4th in 1999 40
Nindethana Farm 54.0 on the 21st 41.0 on the 24th in 1988 38
Paynedale 61.0 on the 31st 58.9 on the 26th in 1984 37
Anro 75.0 on the 31st 38.0 on the 2nd in 1991 34
Useless Loop 29.6 on the 21st 27.3 on the 26th in 2011 31
Narrikup West 50.4 on the 31st 29.0 on the 21st in 2006 20



Highest July total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
July
Cowcowing 80.1 113.8 in 1995 48.5
Hines Hill 76.4 86.7 in 1995 42.1
Nangeenan 76.8 96.2 in 1995 48.6
Yorkrakine 83.5 93.4 in 1995 50.8

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





Lowest July total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
July
Pleasant Valley 34.8 16.2 in 1977 73.5

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




Record highest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Carnarvon Airport 30.9 on the 30th 30.7 on the 31st in 1977 69 22.3
Meekatharra Airport 29.2 on the 31st 28.8 on the 14th in 1979 66 19.0
Mardie 34.4 on the 29th 34.3 on the 30th in 1988 59 27.7
Wiluna 29.7 on the 31st 29.0 on the 28th in 2008 59 19.4
Bidyadanga 35.6 on the 28th 35.5 on the 29th in 2014 56 29.5
Emu Creek Station 32.6 on the 29th = 32.6 on the 17th in 1979 43 25.5
Yeelirrie 30.4 on the 31st 28.6 on the 30th in 2001 42 19.3
Christmas Island Aero 30.1 on the 25th 28.8 on the 1st in 1998 41 26.3
Kununurra Aero 36.5 on the 26th = 36.5 on the 16th in 1995 29 30.6
Laverton Aero 29.7 on the 31st 28.6 on the 24th in 2002 24 18.4
Leinster Aero 29.8 on the 31st 29.4 on the 30th in 2001 22 18.7



Record lowest July daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Kalbarri 14.1 on the 13th 14.6 on the 19th in 1991 41 21.8
Murchison 12.0 on the 13th 13.2 on the 7th in 1998 25 21.0



Record highest July mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Jarrahwood 17.5 17.4 in 1977 32 16.4
Pardoo Station 29.3 = 29.3 in 2003 21 27.9



Record highest July daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Carnamah 15.8 on the 30th = 15.8 on the 29th in 2001 71 7.3
Dwellingup 14.0 on the 31st = 14.0 on the 10th in 2003 56 5.4
Karnet 14.2 on the 31st 13.6 on the 26th in 1992 50 6.2
Badgingarra Research Stn 15.3 on the 30th 15.0 on the 29th in 2001 48 7.2
Beverley 14.2 on the 31st 13.7 on the 30th in 2001 46 5.1
Pingelly 13.7 on the 31st 13.1 on the 30th in 2001 44 5.5
Jandakot Aero 15.9 on the 31st 15.5 on the 2nd in 2014 26 6.7
Karratha Aero 22.1 on the 22nd 21.1 on the 18th in 2010 22 13.6
Mount Elizabeth 19.6 on the 28th 19.5 on the 13th in 2010 22 8.1



Record highest July mean temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Mardie 21.7 21.5 in 2007 58 19.7
Bidyadanga 24.1 24.0 in 2010 55 21.7



Summary statistics for July 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2015
Diff
from
average
Highest for
July
2015
Mean for
July
2015
Diff
from
average
Lowest for
July
2015
Total for
July
2015
Average
for
July
Rank of
July
2015
Fraction of
July
average
North Kimberley (district 01)
Doongan 29.8 +0.1 34.0 27th 10.6 -0.2 4.0 20th 0 0.6 lowest 0%
Kalumburu 32.4 +0.5 36.8 26th 14.8 +0.9 8.9 20th 0 1.8 v low 0%
Mount Elizabeth 28.8 +0.3 32.5 26th 8.9 +0.8 2.7 19th 0 3.0 lowest 0%
Troughton Island 28.8 +0.6 30.6 2nd 22.3 +0.1 20.4 24th 3.0 3.1 high 97%
Truscott 30.8 +0.3 35.1 26th 19.1 +0.9 15.0 15th 1.4 2.6 high 54%
Wyndham Aero 32.2 +0.4 36.8 26th 15.9 +0.7 10.8 19th 0 2.9 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 30.0 +0.3 35.0 26th 16.4 +0.7 10.4 19th 0 1.5 lowest 0%
Halls Creek Airport 27.5 +0.3 32.6 25th 13.4 +0.8 8.8 16th 0 5.9 lowest 0%
Kununurra Aero 31.0 +0.4 36.5 26th 14.0 -1.1 8.7 21st 0 1.6 lowest 0%
Warmun 29.9 +0.4 34.6 25th 13.3 +0.7 6.1 21st 0 5.3 lowest 0%
West Kimberley (district 03)
Bidyadanga 30.9 +1.4 35.6 28th 17.7 +3.7 13.5 6th 0 8.3 lowest 0%
Broome Airport 30.1 +1.3 35.6 28th 15.0 +1.3 8.4 6th 0 6.9 lowest 0%
Curtin Aero 30.9 0.0 34.4 28th 16.9 +1.6 11.2 21st 2.0 9.4 high 21%
Cygnet Bay 28.0 -0.1 31.0 30th 15.7 +1.0 10.1 6th 57.0 11.7 v high 487%
Derby Aero 31.6 +1.0 35.0 28th 15.5 +0.8 8.5 6th 3.2 8.2 high 39%
Fitzroy Crossing Aero 31.0 +0.3 34.3 25th 13.1 +0.9 6.4 19th 0 6.0 v low 0%
De Grey (district 04)
Bedout Island 25.3   28.1 22nd 19.9   18.2 19th
Karratha Aero 27.0 +0.8 32.3 31st 15.6 +2.0 10.1 1st 7.6 13.6 average 56%
Legendre Island 24.7   27.1 23rd 18.5   16.5 18th
Mandora 30.3 +1.4 34.9 28th 14.4 +1.9 6.5 6th 0 9.0 lowest 0%
Marble Bar 27.4 +0.3 32.7 31st 13.4 +1.5 7.0 20th 1.6 18.8 average 9%
Pardoo Station 29.3 +1.4 33.0 28th     13.4 31st 0 9.7 lowest 0%
Port Hedland Airport 28.4 +1.2 32.2 28th 15.1 +2.8 10.8 7th 1.8 10.9 average 17%
Roebourne Aero 28.2 +0.5 32.9 31st 13.8 +1.9 8.5 6th 6.4 8.9 high 72%
Fortescue (district 05)
Barrow Island Airport 24.3 +0.6 28.7 29th 17.9 +0.5 14.9 1st 3.2 11.5 average 28%
Learmonth Airport 24.4 +0.2 29.2 29th 12.6 +1.2 6.6 1st 20.8 21.6 average 96%
Mardie 29.2 +1.5 34.4 29th 14.4 +2.7 9.5 9th 1.6 13.0 average 12%
Onslow Airport 27.0 +1.7 32.5 29th 14.6 +1.7 10.9 1st 13.0 18.8 average 69%
Wittenoom     26.5 1st 12.7 +1.2 8.3 1st 24.8 14.2 high 175%
West Gascoyne (district 06)
Carnarvon Airport 23.9 +1.6 30.9 30th 12.1 +1.2 5.2 11th 24.6 43.8 average 56%
Denham 22.4 +0.7 28.4 30th 13.9 +1.2 8.5 10th 55.6 39.7 high 140%
Emu Creek Station 26.3 +0.8 32.6 29th 12.4 +1.2 6.0 10th 35.6 21.5 high 166%
Murchison 21.5 +0.5 29.0 30th 8.3 +2.1 1.0 10th 47.8 28.5 high 168%
Shark Bay Airport 22.6 -0.1 28.9 30th 12.3 +1.8 7.2 10th 39.4 28.7 high 137%
East Gascoyne (district 07)
Newman Aero 21.8 -1.2 28.4 31st 7.1 +0.9 0.7 19th 28.0 15.5 high 181%
Paraburdoo Aero 24.3 -0.5 30.7 30th 11.2 +1.5 6.5 1st 24.4 14.2 high 172%
Murchison (district 07A)
Meekatharra Airport 20.5 +1.5 29.2 31st 7.8 +0.4 2.3 10th 7.0 21.1 low 33%
Mount Magnet Aero 19.9 +1.1 25.4 30th 7.8 +0.8 2.1 10th 35.6 30.0 high 119%
Paynes Find 19.3 +0.8 24.6 1st 6.9 +1.5 -1.5 10th 36.6 35.4 average 103%
North Coast (district 08)
Carnamah     24.5 18th 9.2 +1.9 2.1 9th 71.8 67.3 average 107%
Dalwallinu 17.1 +0.2 22.1 18th 6.6 +0.8 1.4 12th 85.2 48.4 v high 176%
Geraldton Airport 20.9   27.0 19th 10.2   2.3 9th 52.0
Kalbarri 22.1 +0.3 27.7 1st     2.4 9th 107.6 69.6 high 155%
Morawa Airport 19.3 +0.7 24.1 18th 7.9 +1.9 -0.1 10th 0.2 41.2 v low 0%
Mullewa 19.9 +1.1 25.2 1st 9.4 +2.4 3.3 10th 55.4 59.3 average 93%
North Island 21.2 +0.1 24.3 19th 15.7 +0.5 11.6 18th 75.4 70.7 average 107%
Wongan Hills 17.8 +0.7 22.5 18th 7.5 +0.9 0.7 9th 113.4 69.5 v high 163%
Central Coast (district 09)
Badgingarra Research Stn 18.2 +0.6 23.0 18th 8.0 +0.8 2.2 9th 34.6 103.4 v low 33%
Bickley 15.5 +0.4 18.8 3rd 8.1 +1.0 2.4 9th 138.6 215.7 low 64%
Garden Island HSF 18.0 +0.2 20.7 3rd 11.7 +0.6 6.7 9th 109.4 115.7 average 95%
Gingin Aero 18.5 +0.2 22.1 17th 7.4 +1.3 -2.5 9th 129.8 124.9 average 104%
Gosnells City 19.2 +0.5 22.7 2nd 9.7 +1.0 2.5 9th 83.7 160.7 v low 52%
Jandakot Aero 18.5 +0.6 21.8 3rd 8.1 +1.4 -1.5 9th 137.6 173.7 low 79%
Karnet 16.0 +0.6 19.7 31st 7.3 +1.1 0.2 9th 152.1 216.9 low 70%
Medina Research Centre 18.9 +0.6 24.0 18th 8.7 +0.5 0.4 9th 104.0 145.9 low 71%
Pearce RAAF 18.8 +1.0 21.6 30th 8.6 +0.2 0.2 9th 97.8 133.8 low 73%
Perth Airport 18.7 +0.8 21.8 31st 9.1 +1.1 0.1 9th 89.4 155.6 low 57%
Perth Metro 18.7 +0.3 21.7 3rd 9.1 +1.5 0.8 9th 102.4 168.4 low 61%
Rottnest Island 18.0 +0.3 20.6 4th 12.9 +0.6 9.0 9th 134.4 143.9 average 93%
Swanbourne 19.0 +0.6 22.3 2nd 10.1 +0.5 3.7 9th 112.2 147.8 low 76%
South Coast (district 09A)
Albany 16.9 +1.1 20.2 3rd 9.7 +1.5 5.0 27th 89.4 142.7 low 63%
Albany Airport 16.5   20.8 1st 7.7   1.3 27th 92.6
Bridgetown 16.2 +0.5 20.1 2nd 4.9 +0.4 -2.3 13th 128.6 123.4 average 104%
Busselton Aero 17.5 +0.7 20.1 7th 6.8 0.0 0.8 12th 131.8 131.2 average 100%
Cape Leeuwin 17.6 +1.2 21.9 2nd 12.2 +0.9 7.8 16th 93.0 180.7 v low 51%
Cape Naturaliste 17.6 +1.3 21.0 31st 11.2 +0.8 6.2 13th 125.0 160.8 low 78%
Collie East 17.0 +0.8 20.8 2nd 5.0 +1.3 -2.4 9th 89.0 126.9 low 70%
Donnybrook 17.8 +1.3 22.5 2nd 7.5 +1.8 0.8 9th 145.9 185.9 low 78%
Dwellingup 16.3 +1.3 20.2 31st 6.7 +1.3 -1.2 9th 107.6 235.1 v low 46%
Esperance 16.7 -0.5 22.4 19th 9.0 +0.7 5.2 22nd 59.4 96.4 v low 62%
Esperance Aero 15.9 -0.5 20.3 19th 8.0 +0.5 4.5 22nd 50.8 78.6 low 65%
Hopetoun North 16.0 -2.0 22.5 1st 7.1 -0.5 0.6 17th 51.6 69.8 low 74%
Jarrahwood 17.5 +1.1 21.0 2nd 4.9 0.0 -2.8 13th 190.0 176.0 average 108%
Mandurah 18.0 +0.5 20.8 31st 11.0 +0.4 4.4 9th 93.6 116.8 low 80%
Manjimup 15.5 +1.1 19.5 2nd 7.2 +0.8 2.0 12th 105.6 173.5 v low 61%
North Walpole 16.1 +0.1 19.3 1st 9.2 +0.4 5.2 13th 150.8 175.7 low 86%
Pemberton 16.3 +1.2 20.0 2nd     3.2 25th 167.2 209.5 low 80%
Rocky Gully 15.0 +0.3 19.8 1st 6.9 +0.4 0.8 13th 122.8 101.8 average 121%
Shannon 15.0 +0.1 18.8 1st 7.0 +0.5 1.7 13th 142.0 168.7 average 84%
Windy Harbour 17.2 +0.4 21.1 4th 9.2 +0.6 2.9 15th 151.4 192.1 average 79%
Witchcliffe 17.0 +0.6 20.3 2nd 8.2 +0.2 2.1 13th 146.0 190.4 low 77%
North Central (district 10)
Bencubbin 16.4 0.0 21.4 19th 6.7 +0.7 0.5 12th 76.9 45.6 high 169%
Cunderdin Airfield 18.0 +1.0 23.3 18th 6.3 +1.8 -1.5 24th 71.0 50.4 high 141%
Merredin 16.7 +0.4 22.0 19th 6.6 +1.1 -1.0 24th 62.6 50.6 high 124%
Northam 17.7 +0.8 22.9 18th 6.1 +0.8 -0.6 9th 111.8 82.5 high 136%
York 17.7 +0.7 22.2 18th 4.6 +1.0 -3.0 9th 60.2 70.7 average 85%
South Central (district 10A)
Beverley 17.5 +0.7 21.4 18th 5.9 +0.8 -2.2 9th 54.2 77.3 low 70%
Brookton 16.5 +0.4 20.5 3rd 5.7 +1.2 -1.4 9th 48.7 85.3 low 57%
Corrigin 16.4 +1.1 21.1 18th 5.3 +0.4 -2.2 12th 32.5 59.7 low 54%
Hyden 17.1 +0.7 22.0 19th 5.7 +1.1 -0.7 9th 44.8 47.9 average 94%
Jacup 15.9 +0.2 21.1 19th 6.5 +0.9 0.4 9th 46.8 51.7 average 91%
Katanning 15.2 +0.4 20.0 1st 6.3 +0.4 0.4 13th 36.8 63.0 low 58%
Lake Grace 15.7 +0.1 20.6 1st 6.0 +0.7 0.2 9th 17.6 37.5 v low 47%
Narembeen 16.9 +0.4 22.2 19th 6.6 +1.2 -0.9 24th 36.6 49.8 average 73%
Narrogin 15.5 +0.9 20.0 1st 5.7 +0.5 -1.6 9th 42.2 86.5 low 49%
Newdegate Research Station 15.8 +0.6 21.7 1st 4.6 +0.5 -1.5 27th 22.4 47.3 low 47%
Ongerup 15.4 +0.4 20.0 1st 6.6 +0.8 1.2 13th 45.0 49.6 average 91%
Pingelly 16.0 +0.7 19.5 3rd 6.6 +1.1 0.4 24th 43.2 81.4 low 53%
Ravensthorpe 16.4 +0.1 22.0 1st 8.0 +1.3 3.5 22nd 49.0 47.3 average 104%
Wagin 15.8 +0.4 20.0 1st 5.8 +0.2 -1.3 9th 22.4 70.2 v low 32%
Wandering 16.0 +0.2 20.6 3rd 5.0 +1.1 -3.0 9th 67.8 93.5 low 73%
Eucla (district 11)
Balladonia 17.4 -0.2 23.0 1st 5.9 +1.1 -0.1 22nd 40.4 20.7 v high 195%
Eucla 18.3 +0.3 25.8 29th 6.6 -0.4 2.1 19th 23.8 25.3 average 94%
Eyre 19.1 +0.9 24.7 20th 4.8 -1.0 -2.8 22nd 55.7 35.3 high 158%
Forrest 18.9 +0.2 27.7 31st 4.5 -0.6 -0.3 19th 17.4 15.8 average 110%
Red Rocks Point 18.5 0.0 24.5 29th 7.4 -0.1 2.3 22nd 23.8 40.1 v low 59%
South East (district 12)
Bulga Downs 19.6 +0.3 27.8 31st 5.5 +0.6 -0.2 19th 22.4 23.8 average 94%
Kalgoorlie-Boulder Airport 17.3 +0.6 24.3 29th 6.2 +1.2 0.1 22nd 20.6 24.9 average 83%
Laverton Aero 19.1 +0.7 29.7 31st 6.0 +0.1 -0.7 10th 14.0 16.6 average 84%
Leinster Aero 19.4 +0.7 29.8 31st 5.5 -0.6 0.1 10th 1.6 18.2 low 9%
Leonora Aero 19.1   28.6 31st 6.1   0.6 10th 24.4
Munglinup West 16.3 -0.4 22.8 1st 7.4 +0.8 3.8 27th 49.6 44.1 average 112%
Norseman Aero 16.6 -0.7 22.1 1st 4.4 +0.4 -4.0 22nd 37.8 23.8 high 159%
Salmon Gums Res.Stn. 16.0 -0.1 21.9 1st 5.8 +1.2 -0.6 27th 34.4 36.9 average 93%
Southern Cross Airfield 16.4 -0.2 21.3 19th 4.3 +0.9 -2.5 24th 54.4 34.6 high 157%
Yeelirrie 20.4 +1.1 30.4 31st 2.4 -1.1 -3.1 19th 3.0 17.3 low 17%
North East (district 13)
Carnegie 21.3 0.0 30.0 31st 6.1 +0.2 0.4 20th 3.4 11.8 average 29%
Giles Meteorological Office 19.9 -0.1 28.5 31st 6.9 +0.1 1.6 18th 0.8 11.1 average 7%
Telfer Aero 25.9 +0.6 31.5 31st 11.5 +0.9 6.2 20th 0 12.8 lowest 0%
Warburton Airfield 20.6 -0.1 30.8 31st 6.8 +1.1 1.1 11th 6.4 12.7 average 50%
Offshore Islands (district 200)
Adele Island 27.8   29.7 28th 22.4   20.0 9th
Browse Island 28.0   29.5 3rd 24.7   22.0 10th
Christmas Island Aero 26.6 +0.3 30.1 25th 22.6 +0.1 20.3 10th 30.6 93.6 low 33%
Cocos Island Airport 28.6 +0.6 29.4 1st 24.8 +0.8 22.1 26th 50.8 212.0 v low 24%
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 10 am on Monday 3 August 2015. 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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