Western Australia in June 2017: Warm, very dry in the west

Rainfall in June was below average for western and northern parts of Western Australia. The statewide averaged rainfall was the ninth-lowest on record, and it was the third-driest June for the South West Land Division (SWLD). Daytime temperatures were above average for most of Western Australia and the statewide mean maximum temperature ranked third-highest in June on record, whilst it was a record warm June for the SWLD. Overnight temperatures were cooler than normal in the eastern parts of WA resulting in the statewide mean minimum temperature being slightly below average.

Very dry in western parts of Western Australia

  • Rainfall for WA was ninth-lowest from comparable records commencing in 1900
  • It was the third-driest June on record for the South West Land Division (SWLD); behind June of 2006 and 2013
  • Monthly rainfall was generally less than 10 mm in inland Gascoyne, Central West and northern Wheat Belt
  • Many sites in the SWLD and Gascoyne including multiple sites with over 100 years of rainfall records, had their driest June on record or driest for at least 20 years
  • Moderate to heavy rainfall was recorded in southwest WA on the 22nd and 23rd from a cut-off low pressure system
  • A few sites in the northwest Great Southern district recorded daily totals over 100 mm on the 23rd, and Wandering and Marradong had their highest June daily rainfall on record

Above average mean maximum temperature for most WA; below average mean minimum temperature in the east

    • Mean maximum temperature for WA was third-highest for June on record, behind June of 2015 and 1962
    • Mean maximum temperature for the SWLD was highest on record , being 0.6 °C higher than previous record set in June 2015
    • Warm start to June in western parts of WA with daily maxima reaching to the low-30s in southern Gascoyne, some sites had their highest June temperature on record on the 1st or 5th
    • Many sites in the Gascoyne and southern WA had their highest mean maximum temperature in June on record
    • Mean minimum temperature for WA was slightly below average
    • A cold morning along the west and south coast on the 30th, resulting in a number of new records

    High pressure systems dominated southern Australia

    • Mean sea level pressure was more than 5 hPa above average for June across much of southern Australia
    • Due to dominance of high pressure systems, only two cut-off low pressure systems at mid and late June and a strong cold front on the 30th produced moderate to heavy rainfall for the southwest WA

    Further information

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    Extremes in June 2017
    Hottest day 34.7 °C at Fitzroy Crossing Aero on the 25th
    Warmest days on average 32.1 °C at Kalumburu
    Coolest days on average 16.8 °C at Shannon
    Coldest day 12.4 °C at Narrogin on the 22nd
    Coldest night -5.0 °C at Eyre on the 7th
    Coolest nights on average 3.4 °C at Forrest
    Warmest nights on average 25.7 °C at Browse Island
    19.8 °C at Truscott
    Warmest night 26.7 °C at Browse Island on the 5th
    26.7 °C at Browse Island on the 7th
    22.9 °C at Truscott on the 5th
    Warmest on average overall 26.9 °C at Browse Island
    25.2 °C at Truscott
    Coolest on average overall 11.1 °C at Bridgetown
    Wettest overall 150.8 mm at Wilgarra
    Driest overall 0 mm at Argyle Aerodrome & multiple sites
    Wettest day 132.6 mm at Wilgarra on the 23rd
    Strongest wind gust 94 km/h at Cape Leeuwin on the 30th

    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 June daily rainfall
    New record
    (mm)
    Old
    record
    Years of
    record
    Wandering 130.8 on the 23rd 85.3 on the 5th in 1952 115*
    Marradong 77.6 on the 23rd 74.2 on the 26th in 1967 110

    * note: Years of Records are combined from Wandering Comparision and Wandering




    Record lowest June total rainfall
    New record
    (mm)
    Old
    record
    Years of
    record
    Average for
    June
    Kojonup 7.0 16.4 in 2001 131 86.0
    Mount Barker 24.8 36.6 in 1987 130 93.7
    Cranbrook 5.0 17.5 in 2006 125 70.8
    Collie 21.8 36.6 in 2006 117 173.8
    Kendenup 10.6 24.0 in 2006 117 77.7
    Nannup 33.0 52.1 in 2006 117 165.0
    Codg Codgen 3.4 6.5 in 1922 115 48.6
    Merredin 5.0 5.9 in 1912 115 48.7
    Wilgarrup 8.0 42.9 in 1993 112 151.5
    Woolgorong 0.4 4.8 in 1976 111 41.0
    Brunswick Junction 18.2 32.7 in 2006 109 196.3
    Belka 8.0 9.8 in 2001 106 51.9
    Bullfinch 2.0 4.0 in 2013 106 40.7
    Gnowangerup 5.0 15.0 in 2001 105 55.4
    Riverdale 6.6 16.6 in 2006 105 84.0
    Tambellup 6.4 17.2 in 2006 105 62.1
    Bencubbin 3.5 4.1 in 2001 104 48.1
    Fort Hill 10.2 10.4 in 2001 104 53.2
    Westonia 2.0 6.8 in 2006 103 49.1
    Manjimup 21.4 45.4 in 2006 101 161.6
    Badgebup 8.8 12.6 in 2001 100 60.4
    White Gums 13.9 20.0 in 1921 98 60.7
    Newbicup 5.2 19.2 in 2006 95 101.7
    Dalyup Park 23.2 23.4 in 2011 94 80.1
    Hines Hill 5.4 = 5.4 in 2013 94 42.1
    Horseshoe 7.0 13.9 in 2001 93 77.7
    Cherry Tree 8.8 18.2 in 2001 92 76.7
    Boscabel 4.8 20.2 in 2006 89 87.9
    Cadoux 1.9 6.1 in 2013 87 58.4
    Mukinbudin 5.2 6.2 in 2001 84 40.3
    Seven Oaks 3.8 7.0 in 2006 84 46.0
    Woodanilling 10.1 16.7 in 2006 84 75.4
    Bodallin South 7.6 12.0 in 1984 83 49.9
    Bonnie Rock 1.8 4.6 in 2006 82 40.5
    Nanyanine 0.0 7.3 in 2013 78 51.5
    Beria 1.6 3.8 in 2001 77 47.1
    Pemberton 38.1 76.5 in 2010 77 187.1
    Shackleton 5.6 15.2 in 2014 76 53.1
    Carnarvon Airport 1.0 = 1.0 in 1976 73 46.0
    Pleasant Valley 20.4 21.2 in 2011 68 65.9
    Cranham 4.4 22.4 in 2001 64 73.5
    Wokalup 23.6 47.5 in 2001 64 181.2
    Esperance Downs Research Stn 14.4 18.0 in 1958 63 59.0
    Mindarabin 7.8 8.6 in 1958 61 49.5
    Paynes Find 0.4 1.8 in 2006 57 40.3
    Kojonolokan Hills 11.8 16.2 in 2006 56 67.1
    Esperance Aero 18.4 21.0 in 2008 48 66.3
    Lorinna 13.4 15.2 in 2008 45 55.4
    Jarrahwood 39.8 44.0 in 2010 42 156.1
    Perivale Orchard 35.0 36.0 in 2006 41 140.8
    The Duke 24.2 31.0 in 1986 40 77.1
    Karara 0.5 0.8 in 2001 39 42.0
    Mount Gibson 1.7 5.5 in 2001 35 37.7
    Yourdamung Lake 17.2 28.8 in 2001 23 120.4
    Worsley Downs 27.4 70.4 in 2010 22 172.3
    Morawa Airport 0.6 8.4 in 2001 21 37.7
    Southern Cross Airfield 2.0 5.8 in 2013 21 26.1
    Bridgetown 16.0 32.6 in 2006 20 103.7

    Lowest June total rainfall for at least 20 years
    Observed
    (mm)
    Most recent
    lower
    Average for
    June
    Nangeenan 6.6 2.6 in 1922 46.7
    Walpole 101.0 81.7 in 1987 196.2
    Wereroa 79.6 77.5 in 1987 152.2

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




    Record highest June temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Meekatharra Airport 29.0 on the 1st = 29.0 on the 3rd in 2016 68 19.7
    Cape Naturaliste 24.3 on the 13th 23.0 on the 4th in 1984 61 17.4
    Bencubbin 27.2 on the 1st 27.1 on the 2nd in 1992 57 17.4
    Ravensthorpe 27.0 on the 1st 26.0 on the 26th in 1997 56 17.2
    Merredin 27.3 on the 1st 26.7 on the 5th in 2015 52 17.4
    Narembeen 27.2 on the 1st 27.0 on the 5th in 2015 46 17.5
    Hyden 27.7 on the 1st 26.1 on the 1st in 1983 45 17.4
    Paynes Find 30.2 on the 1st 28.1 on the 7th in 1998 38 19.3
    Medina Research Centre 26.7 on the 5th 26.5 on the 11th in 2015 32 19.4
    Gosnells City 26.1 on the 5th 26.0 on the 12th in 2000 26 19.7
    Jacup 26.0 on the 1st 24.8 on the 5th in 2015 24 16.8
    Mount Magnet Aero 30.7 on the 1st 28.1 on the 3rd in 2016 22 19.8
    Newdegate Research Station 26.8 on the 1st 25.9 on the 5th in 2015 22 16.6
    York 25.7 on the 5th 25.6 on the 5th in 2015 22 18.4
    Dalwallinu 27.0 on the 1st = 27.0 on the 5th in 2015 21 18.6
    Lake Grace 25.2 on the 1st 24.7 on the 5th in 2015 21 16.9
    Southern Cross Airfield 28.6 on the 1st 26.4 on the 5th in 2015 21 17.9
    Hopetoun North 27.3 on the 1st 27.2 on the 2nd in 2002 20 19.0



    Record highest June mean daily maximum temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Perth Metro 21.4 21.0 in 2015 119 19.4
    Cape Leeuwin 19.2 18.8 in 2000 120 17.4
    Cape Naturaliste 19.5 19.1 in 1985 113 17.4
    Donnybrook 19.7 19.5 in 1949 113 17.5
    Northam 20.9 20.5 in 2015 112 18.0
    Albany 19.0 18.8 in 2015 99 16.6
    Narrogin 18.4 17.8 in 2015 96 15.5
    Dwellingup 18.5 17.8 in 2015 80 16.0
    Manjimup 17.7 17.1 in 2015 77 15.3
    Salmon Gums Res.Stn. 19.3 = 19.3 in 2010 77 16.9
    Perth Airport 21.5 21.0 in 2015 73 19.0
    Mullewa 23.1 = 23.1 in 2006 72 20.0
    Carnarvon Airport 25.8 25.5 in 2015 70 23.4
    Corrigin 19.3 18.9 in 2015 68 16.5
    Bencubbin 20.5 19.7 in 1985 64 17.4
    Pearce RAAF 21.8 21.2 in 2015 56 18.9
    Ravensthorpe 19.4 18.9 in 1985 55 17.2
    Eyre 21.4 21.2 in 2004 54 19.0
    Merredin 20.4 19.6 in 2015 51 17.4
    Brookton 19.8 19.0 in 2015 49 17.2
    Ongerup 18.4 17.7 in 2015 49 16.0
    Wongan Hills 20.6 20.3 in 2015 49 18.2
    Badgingarra Research Stn 21.6 20.9 in 1985 47 18.7
    Jurien Bay 23.0 22.9 in 2015 47 20.6
    Beverley 20.5 19.9 in 2015 46 18.0
    Narembeen 20.3 19.4 in 2015 45 17.5
    Pingelly 19.4 18.3 in 2015 45 16.4
    Hyden 20.4 19.5 in 2001 44 17.4
    Wagin 18.4 17.9 in 2015 42 16.4
    Jarrahwood 19.2 18.6 in 2015 35 17.2
    Medina Research Centre 22.1 21.1 in 2015 31 19.4
    Rottnest Island 20.1 19.7 in 2015 27 18.7
    Jandakot Aero 21.2 20.7 in 2015 26 19.0
    Esperance Aero 19.7 18.7 in 2008 25 17.3
    Gosnells City 21.7 21.1 in 2015 25 19.7
    Bickley 18.0 17.5 in 2015 23 16.1
    Jacup 18.9 18.0 in 2001 23 16.8
    Perth Metro 21.4 21.0 in 2015 119 19.4
    Leinster Aero 21.0 = 21.0 in 2015 22 19.1
    Bunbury 20.2 19.3 in 2015 21 18.4
    Mount Magnet Aero 22.2 21.9 in 2015 21 19.8
    Newdegate Research Station 19.4 18.3 in 2015 21 16.6
    Rocky Gully 17.4 16.7 in 2015 21 15.6
    York 21.0 20.2 in 2015 21 18.4
    Cunderdin Airfield 20.9 20.6 in 2015 20 18.5
    Dalwallinu 21.2 19.9 in 2015 20 18.6
    Lake Grace 19.1 18.7 in 1997 20 16.9
    Morawa Airport 23.3 22.0 in 2015 20 20.0
    Southern Cross Airfield 20.5 19.4 in 2001 20 17.9

    Highest June mean daily maximum temperature for at least 20 years
    Observed
    (°C)
    Most recent
    higher
    Average for
    June
    Esperance 19.6 19.7 in 1985 18.0
    Kalgoorlie-Boulder Airport 19.9 20.0 in 1985 17.5
    Gingin Aero 21.7 22.9 in 1996 19.6



    Record highest June daily minimum temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Rottnest Island 18.0 on the 3rd 17.8 on the 3rd in 2005 28 13.3



    Record lowest June temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Learmonth Airport 4.9 on the 30th = 4.9 on the 15th in 2005 43 13.2
    Esperance Aero 2.9 on the 30th 3.7 on the 18th in 2016 26 8.5



    Record highest June mean daily minimum temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Rottnest Island 14.5 14.4 in 2004 27 13.3



    Record highest June mean temperature
    New record
    (°C)
    Old
    record
    Years of
    record
    Average for
    June
    Badgingarra Research Stn 15.4 15.3 in 1983 46 13.5
    Wagin 12.8 = 12.8 in 1983 41 11.3
    Rottnest Island 17.3 17.0 in 2015 27 16.0
    Esperance Aero 13.9 13.8 in 2015 25 12.9
    Bickley 13.3 = 13.3 in 2015 23 12.1
    Lake Grace 12.9 12.8 in 2015 20 11.7

    Highest June mean temperature for at least 20 years
    Observed
    (°C)
    Most recent
    higher
    Average for
    June
    Kalgoorlie-Boulder Airport 13.8 14.1 in 1964 11.9
    Cape Leeuwin 16.3 =16.3 in 1985 14.8
    Cape Naturaliste 15.9 16.3 in 1985 14.4
    Ravensthorpe 13.9 14.2 in 1985* 12.6

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




    Summary statistics for June 2017
    Maximum temperatures
    (°C)
    Minimum temperatures
    (°C)
    Rainfall
    (millimetres)
    Mean for
    June
    2017
    Diff
    from
    average
    Highest for
    June
    2017
    Mean for
    June
    2017
    Diff
    from
    average
    Lowest for
    June
    2017
    Total for
    June
    2017
    Average
    for
    June
    Rank of
    June
    2017
    Fraction of
    June
    average
    North Kimberley (district 01)
    Kalumburu 32.1 +0.5 34.5 23rd 15.1 +0.7 8.3 14th 0 2.6 v low 0%
    Troughton Island 29.1 0.0 31.1 5th 23.5 +0.1 21.9 15th 0 6.4 lowest 0%
    Truscott 30.5 +0.3 32.7 29th 19.8 +0.7 16.2 9th 0 3.2 v low 0%
    Wyndham Aero 31.5 +0.1 34.1 24th 15.2 -0.8 9.5 14th 0 3.4 lowest 0%
    East Kimberley (district 02)
    Argyle Aerodrome 29.4 0.0 32.5 24th 15.4 -0.8 11.2 11th 0 4.0 lowest 0%
    Halls Creek Airport 27.3   31.5 27th 11.5   6.5 16th 0
    Kununurra Aero 30.4 0.0 33.1 24th 15.0 -0.9 9.2 14th 0 3.2 lowest 0%
    Warmun 29.1 -0.5 32.5 24th 13.4 -0.4 8.0 13th 0 6.0 lowest 0%
    West Kimberley (district 03)
    Broome Airport 29.8 +0.6 31.9 21st 13.9 -1.3 8.7 10th 0 18.9 lowest 0%
    Curtin Aero 30.4 -0.4 33.4 24th 16.2 -0.5 13.0 9th 0 7.9 lowest 0%
    Cygnet Bay 28.2 -0.5 31.0 6th     7.5 13th 0 20.4 lowest 0%
    Derby Aero 31.1 +0.5 33.0 25th 14.8 -1.0 10.2 16th 0 8.0 lowest 0%
    Fitzroy Crossing Aero 30.7 +0.3 34.7 25th 11.3 -1.8 7.1 10th 0 7.7 v low 0%
    De Grey (district 04)
    Bedout Island 25.6   28.5 22nd 21.1   17.3 28th
    Karratha Aero 27.3 +0.8 30.6 21st 15.0 -0.1 12.1 30th 0 35.3 lowest 0%
    Legendre Island 25.5   28.2 22nd 19.6   17.2 28th
    Mandora 30.4 +1.3 32.6 18th 13.7 -0.5 9.5 12th 0 17.3 lowest 0%
    Marble Bar 27.9 +1.0 31.2 22nd 13.3 0.0 8.8 11th 0 24.2 v low 0%
    Port Hedland Airport 28.6 +1.0 31.4 17th 13.9 -0.3 10.4 3rd 0 23.1 lowest 0%
    Roebourne Aero 29.0 +1.0 31.7 21st 13.2 -0.4 8.2 11th 0 34.0 v low 0%
    Fortescue (district 05)
    Barrow Island Airport 24.5 +0.2 27.5 1st 19.5 +0.7 13.8 30th 22.8 35.0 average 65%
    Learmonth Airport 26.2 +1.4 29.5 1st 12.2 -1.0 4.9 30th 9.6 42.5 low 23%
    Onslow Airport     30.9 2nd 15.0 +0.7 10.4 11th 1.0 45.5 low 2%
    Wittenoom 25.5 +1.0 28.4 22nd 13.3 +0.5 8.3 12th 0 28.6 lowest 0%
    West Gascoyne (district 06)
    Carnarvon Airport 25.8 +2.4 30.3 19th 10.7 -1.6 3.7 30th 1.0 46.0 lowest 2%
    Denham 23.9 +1.0 28.5 18th 13.3 -0.6 9.0 30th 5.2 53.9 v low 10%
    Murchison       7.7 +0.1 2.0 6th 0.2 27.2 lowest 1%
    Shark Bay Airport 25.6 +1.8 30.3 2nd 10.7 -1.1 4.8 30th 5.4 43.1 low 13%
    East Gascoyne (district 07)
    Newman Aero 23.4 +0.4 26.9 1st 7.3 -0.1 1.7 9th 0 15.3 lowest 0%
    Paraburdoo Aero 25.8 +0.7 29.8 1st 11.6 +0.4 5.5 30th 0 23.2 lowest 0%
    Murchison (district 07A)
    Meekatharra Airport 21.9 +2.2 29.0 1st 9.2 +0.4 3.0 29th 8.8 29.8 low 30%
    Mount Magnet Aero 22.2 +2.4 30.7 1st 8.4 +0.1 2.1 28th 9.8 20.2 average 49%
    Paynes Find 22.7 +3.4 30.2 1st 4.7 -2.0 -1.4 28th 0.4 40.3 lowest 1%
    North Coast (district 08)
    Dalwallinu 21.2 +2.6 27.0 1st 6.4 -0.8 1.7 9th 5.2 31.1 v low 17%
    Geraldton Airport 23.7   28.8 5th 9.6   4.1 7th 39.2
    Kalbarri 25.4 +2.5 28.9 6th 11.3 +0.3 1.9 30th 8.0 77.7 v low 10%
    Morawa Airport 23.3 +3.3 28.1 1st 7.8 +0.3 1.7 7th 0.6 37.7 lowest 2%
    Mullewa 23.1 +3.1 28.5 1st 9.4 +0.8 4.0 30th 9.6 63.1 v low 15%
    North Island 23.3 +1.0 26.8 5th 17.2 +0.7 9.8 30th 55.6 60.0 average 93%
    Wongan Hills 20.6 +2.4 26.8 1st 7.5 -0.2 1.4 26th 12.8 69.5 v low 18%
    Central Coast (district 09)
    Badgingarra Research Stn 21.6 +2.9 26.5 5th 9.1 +0.7 3.3 27th 34.0 97.8 low 35%
    Bickley 18.0 +1.9 21.8 5th 8.6 +0.5 3.6 29th 60.4 194.7 v low 31%
    Garden Island HSF 20.3 +1.3 23.8 11th 12.4 +0.3 9.0 30th 39.8 103.6 v low 38%
    Gingin Aero 21.7 +2.1 26.5 5th 5.2 -2.1 -0.1 26th 66.2 110.5 low 60%
    Gosnells City 21.7 +2.0 26.1 5th     6.4 30th 55.1 165.2 v low 33%
    Jandakot Aero 21.2 +2.2 24.9 5th 7.1 -0.3 3.3 30th 53.6 153.0 v low 35%
    Jurien Bay 23.0 +2.4 27.0 8th 9.2 -1.1 3.0 26th 41.5 104.0 low 40%
    Lancelin 22.4 +2.2 26.6 8th 10.8 0.0 5.0 26th 32.7 116.6 v low 28%
    Medina Research Centre 22.1 +2.7 26.7 5th 8.6 -0.4 4.4 26th 46.3 136.9 v low 34%
    Millendon (Swan Valley) 21.5   25.4 13th 7.5   2.1 26th 35.8
    Pearce RAAF 21.8 +2.9 26.4 5th 8.1 -1.3 1.5 26th 39.0 130.2 v low 30%
    Perth Airport 21.5 +2.5 25.3 5th 8.6 -0.4 2.8 26th 52.4 155.9 v low 34%
    Perth Metro 21.4 +2.0 25.6 5th 7.9 -0.7 1.9 9th 88.0 172.9 low 51%
    Rottnest Island 20.1 +1.4 23.5 6th 14.5 +1.2 11.3 25th        
    Swanbourne 21.0 +1.6 25.4 5th 11.0 +0.4 6.9 26th 55.8 122.2 v low 46%
    South Coast (district 09A)
    Albany 19.0 +2.4 23.9 12th     5.2 29th 65.6 131.7 v low 50%
    Albany Airport 18.7   23.2 13th 7.2   0.3 12th 45.0
    Bridgetown 18.2 +1.5 21.4 12th 4.1 -1.1 -2.3 29th 16.0 103.7 lowest 15%
    Bunbury 20.2 +1.8 23.3 11th 6.9 -1.1 1.8 9th 61.8 132.2 low 47%
    Busselton Aero 19.1 +1.3 21.8 1st 7.7 +0.1 3.0 29th 60.4 124.4 low 49%
    Cape Leeuwin 19.2 +1.8 22.8 6th 13.4 +1.2 9.3 28th 136.0 174.9 average 78%
    Cape Naturaliste 19.5 +2.1 24.3 13th 12.2 +0.7 7.6 24th 61.6 162.0 v low 38%
    Collie East 18.9 +1.6 22.4 6th 3.8 -0.6 -2.2 29th 21.2 103.2 v low 21%
    Donnybrook 19.7 +2.2 23.0 12th 6.5 -0.2 2.2 13th 43.2 187.3 v low 23%
    Dwellingup 18.5 +2.5 22.2 12th 6.0 -0.5 2.1 30th 103.8 235.8 v low 44%
    Esperance 19.6 +1.6 27.6 1st 9.3 +0.1 3.6 30th 33.8 77.8 v low 43%
    Esperance Aero 19.7 +2.4 26.6 1st 8.2 -0.3 2.9 30th 18.4 66.3 lowest 28%
    Hopetoun North 20.2 +1.2 27.3 1st 8.7 +0.2 2.9 29th 43.8 49.6 average 88%
    Jarrahwood 19.2 +2.0 22.1 9th 4.5 -0.9 -1.0 12th 39.8 156.1 lowest 25%
    Mandurah 19.8 +1.2 22.6 8th 12.0 +0.5 8.8 25th 55.2 115.2 low 48%
    Manjimup 17.7 +2.4 21.8 12th 8.2 +0.8 4.4 29th 21.4 161.6 lowest 13%
    North Walpole 18.1 +1.2 22.1 12th 10.3 +0.4 6.1 8th 94.0 159.3 v low 59%
    Rocky Gully 17.4 +1.8 21.9 13th 7.4 -0.3 3.5 28th 13.2 86.7 v low 15%
    Shannon 16.8 +1.1 20.4 1st 7.6 0.0 1.5 29th 40.6 141.5 v low 29%
    Witchcliffe 18.3 +0.9 21.6 6th 8.3 -0.5 3.4 12th 101.4 170.8 low 59%
    North Central (district 10)
    Bencubbin 20.5 +3.1 27.2 1st 6.4 -0.8 1.6 26th 3.5 48.1 lowest 7%
    Cunderdin Airfield 20.9 +2.4 26.1 1st 4.6 -1.3 -1.4 7th 8.0 34.8 low 23%
    Merredin 20.4 +3.0 27.3 1st 6.5 -0.2 0.4 27th 5.0 48.7 lowest 10%
    Northam 20.9 +2.9 26.2 13th 4.7 -1.8 -0.6 30th 21.0 78.4 v low 27%
    York 21.0 +2.6 25.7 5th 4.1 -0.6 -2.5 29th 12.0 56.7 low 21%
    South Central (district 10A)
    Beverley 20.5 +2.5 24.8 1st 5.3 -0.6 -0.6 29th 10.1 77.1 v low 13%
    Brookton 19.8 +2.6 24.4 1st 5.0 -0.5 -0.4 30th 18.2 84.1 v low 22%
    Corrigin 19.3 +2.8 24.9 1st 4.8 -1.1 -0.8 9th
    Hyden 20.4 +3.0 27.7 1st 5.3 -0.3 -0.5 7th 41.6 48.5 average 86%
    Jacup 18.9 +2.1 26.0 1st 6.5 -0.1 1.6 29th 43.4 41.9 average 104%
    Katanning 18.3 +2.3 21.9 1st 6.8 0.0 2.7 29th 10.4 54.7 v low 19%
    Lake Grace 19.1 +2.2 25.2 1st 6.7 +0.3 2.2 29th 25.0 31.0 low 81%
    Narembeen 20.3 +2.8 27.2 1st 5.9 -0.5 0.0 29th 8.2 50.7 v low 16%
    Narrogin 18.4 +2.9 22.6 1st 5.8 -0.6 1.0 29th 52.3 85.2 low 61%
    Newdegate Research Station 19.4 +2.8 26.8 1st 3.6 -1.5 -2.0 29th 15.0 49.1 v low 31%
    Ongerup 18.4 +2.4 23.9 2nd 6.5 -0.2 2.8 28th 30.2 48.7 low 62%
    Pingelly 19.4 +3.0 23.4 1st 7.4 +0.9 2.8 27th 27.8 80.9 v low 34%
    Ravensthorpe 19.4 +2.2 27.0 1st 8.4 +0.5 1.5 29th 32.9 43.6 average 75%
    Wagin 18.4 +2.0 22.5 2nd 7.3 +1.1 2.5 29th 24.1 71.3 v low 34%
    Wandering 18.6 +1.7 22.4 2nd 4.3 -0.3 -1.8 9th 148.6 75.6 v high 197%
    Eucla (district 11)
    Balladonia 20.7 +2.7 28.0 2nd 5.2 -0.7 -0.5 10th 23.6 25.9 average 91%
    Eucla 20.0 +1.3 24.2 22nd 6.4 -1.9 3.2 11th 18.0 30.1 average 60%
    Eyre 21.4 +2.4 28.1 2nd 4.2 -2.5 -5.0 7th 19.0 39.8 low 48%
    Forrest 20.5 +1.5 24.8 22nd 3.4 -2.7 -1.8 3rd 2.6 15.1 v low 17%
    Red Rocks Point 20.0 +0.9 25.8 1st 7.4 -1.5 2.7 7th 20.0 32.1 low 62%
    South East (district 12)
    Bulga Downs 21.7 +2.0 28.9 1st 5.5 -0.9 -1.0 30th 4.4 27.0 low 16%
    Kalgoorlie-Boulder Airport 19.9 +2.4 27.5 1st 7.8 +1.6 1.8 7th 1.6 27.4 v low 6%
    Laverton Aero 20.8 +2.5 26.7 1st 6.8 -0.2 1.1 28th 0 15.0 lowest 0%
    Leinster Aero 21.0 +1.9 27.0 1st 6.6 -0.7 -0.1 8th 1.8 15.5 v low 12%
    Leonora Aero 21.0 +1.9 27.6 2nd 6.1 -1.3 -0.2 30th 0.4 15.1 v low 3%
    Munglinup West 19.6 +2.1 26.5 1st 7.8 +0.1 3.1 30th 44.4 39.8 average 112%
    Norseman Aero 19.8 +1.9 28.2 1st 4.8 0.0 -2.0 29th 4.2 17.0 v low 25%
    Salmon Gums Res.Stn. 19.3 +2.4 27.4 1st 3.8 -1.9 -3.3 29th 11.2 38.1 v low 29%
    Southern Cross Airfield 20.5 +2.6 28.6 1st 3.5 -1.1 -2.3 30th 2.0 26.1 lowest 8%
    Yeelirrie 21.1 +1.5 28.0 1st 3.5 -1.3 -2.0 8th 7.1 22.6 average 31%
    North East (district 13)
    Carnegie 21.9 +0.8 25.6 1st 6.9 -0.2 -1.0 18th 30.4 15.3 high 199%
    Giles Meteorological Office 20.8 +0.6 26.6 23rd 6.6 -1.5 2.8 11th 10.2 18.7 average 55%
    Telfer Aero 26.2 +0.9 30.5 22nd 11.4 -0.6 5.2 11th 0 13.2 lowest 0%
    Warburton Airfield 21.4 +0.8 26.5 22nd 6.8 +0.2 2.2 10th 23.4 18.4 average 127%
    Wiluna 21.6 +1.7 27.0 1st 7.5 +0.8 0.5 8th 13.4 23.7 average 57%
    Offshore Islands (district 200)
    Browse Island 28.1   29.6 5th 25.7   24.6 13th
    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.
    From 2017 on, information about Cocos and Christmas Islands can be found in the climate summary for the Remote Islands and Antarctica

    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 10 am on Monday 3 July 2017. 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.

    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.
    From 2017 on, information about Cocos and Christmas Islands can be found in the climate summary for the Remote Islands and Antarctica

    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

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