Western Australia in June 2018: Wet in the northwest; dry in the southwest

June 2018 was drier than normal in the southwest and northeast of Western Australia, but it was a wet June in the northwest. June rainfall was near average for Western Australia as a whole. Mean maximum temperatures were above average for the State as a whole, whilst mean minimum temperatures were near average.

Below average rainfall in the southwest; above average rainfall in the northwest

  • June rainfall was near average for WA, but June rainfall was below average for the South West Land Division
  • Cloudbands moved over the Gascoyne, west Pilbara and the South West Land Division in early and mid-June, and a number of sites recorded their wettest June for over 20 years as a result; daily rainfall totals of 80 mm to 100 mm in the west Gascoyne on the 5th and 6th were the highest daily rainfall in June on record for a few sites, and caused minor flooding in the Gascoyne River

Warmer days in the north, east and south; warmer nights in the northwest

  • Mean maximum temperature was 0.83 °C above average for WA
  • Mean minimum temperature was near average for WA
  • Strong northerly winds produced very warm daytime and overnight temperatures for much of WA between the 3nd and 5th; Hopetoun North in the Southeast Coastal recorded its highest June temperature on record on the 4th, while several sites in the Pilbara, Gascoyne, Great Southern and South Coastal also reported their highest June minimum temperature on record

Damaging winds and high tides in the southwest

  • Strong north to northwesterly winds with sustained gales and gusts up to 109 km/h were recorded in southwest WA late on the 4th and in the morning on the 5th, causing damage in parts of the Lower West and South West districts. About 40,000 homes were without power and several boats broke their moorings near Bunbury. Tides rose well above normal along the west coast, particularly in Geographe Bay, and low lying areas around Busselton were inundated. The Barrack Street river level gauge on the Swan River in Perth reached 1.64m, with some minor flooding of Riverside Drive reported.

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Extremes in June 2018
Hottest day 36.7 °C at Fitzroy Crossing Aero on the 11th
Warmest days on average 33.1 °C at Kalumburu
Coolest days on average 15.4 °C at Shannon
Coldest day 10.7 °C at Dwellingup on the 7th
Coldest night -2.1 °C at Salmon Gums Res.Stn. on the 25th
Coolest nights on average 4.1 °C at Jarrahwood
Warmest nights on average 23.6 °C at Troughton Island
Warmest night 26.4 °C at Browse Island on the 13th
Warmest on average overall 26.6 °C at Troughton Island
Coolest on average overall 10.4 °C at Bridgetown
Wettest overall 270.2 mm at Jarrahdale
Wettest day 98.8 mm at Mount Augustus Airstrip on the 6th
Strongest wind gust 109 km/h at Busselton Jetty on the 5th
109 km/h at Cape Naturaliste on the 5th
109 km/h at Rottnest Island on the 5th

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
Denham 98.0 on the 5th 96.5 on the 27th in 1965 103
Hill Springs 80.5 on the 6th 79.0 on the 7th in 1989 60
Steep Point 86.0 on the 5th 72.6 on the 3rd in 2005 22



Record highest June total rainfall
New record
(mm)
Old
record
Years of
record
Average for
June
Dalwallinu 57.6 57.0 in 2005 22 32.3

Highest June total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
June
Hill Springs 174.9 177.3 in 1951* 38.8
Marillana 83.0 166.2 in 1971* 20.4
Bulloo Downs 68.6 71.6 in 1991 16.4
Marron 79.4 84.5 in 1992 39.7
Carlindie 52.0 168.6 in 1968* 18.5
Red Hill 93.8 108.6 in 1995* 37.2
Doorawarrah 92.0 102.0 in 1996* 39.6
Mulyie 78.0 98.0 in 1968* 23.7
Gascoyne Junction 61.7 94.9 in 1996* 31.5

 



Record highest June temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Hopetoun North 27.6 on the 4th 27.3 on the 1st in 2017 21 19.0



Record highest June daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
June
Onslow Airport 23.3 on the 5th = 23.3 on the 11th in 2013 53 14.3
Learmonth Airport 23.2 on the 5th 22.7 on the 15th in 2010 44 13.1
Paynes Find 17.9 on the 4th 16.1 on the 1st in 1998 39 6.6
Esperance Aero 15.6 on the 5th 15.3 on the 3rd in 2002 27 8.5
Jacup 14.1 on the 5th = 14.1 on the 25th in 2003 25 6.6
Thevenard Island 24.7 on the 5th = 24.7 on the 21st in 2016 24 18.6
Mount Magnet Aero 17.8 on the 4th 16.6 on the 1st in 1998 23 8.3
Newdegate Research Station 13.5 on the 5th 13.3 on the 11th in 2012 23 5.0
Hopetoun North 17.2 on the 5th 15.7 on the 17th in 2004 21 8.5
Varanus Island 25.3 on the 5th 25.2 on the 4th in 2016 20 20.9



Summary statistics for June 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
June
2018
Diff
from
average
Highest for
June
2018
Mean for
June
2018
Diff
from
average
Lowest for
June
2018
Total for
June
2018
Average
for
June
Rank of
June
2018
Fraction of
June
average
North Kimberley (district 01)
Doongan 30.2 +1.0 33.2 12th 10.5 -1.2 7.0 5th 0 4.5 lowest 0%
Kalumburu 33.1 +1.5 35.3 11th 13.2 -1.2 8.5 6th 0 2.5 lowest 0%
Troughton Island 29.7 +0.6 31.2 2nd 23.6 +0.2 21.4 30th 0 6.2 lowest 0%
Truscott 30.8 +0.6 32.7 15th 19.1 0.0 14.2 7th 0 3.0 v low 0%
Wyndham Aero 32.3 +0.9 35.6 13th 15.5 -0.4 10.1 5th 0 3.3 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 30.4 +1.0 34.9 12th 15.8 -0.4 11.4 5th 0.2 3.9 high 5%
Halls Creek Airport 28.2   34.3 12th 10.9   5.8 23rd 0.2
Kununurra Aero 31.4 +1.0 34.9 13th 13.4 -2.5 8.8 5th 0.2 3.2 high 6%
Warmun 28.8 -0.7 35.2 11th 12.0 -1.8 5.7 5th 0 5.9 lowest 0%
West Kimberley (district 03)
Bidyadanga 30.8 +1.0 35.0 11th 15.9 +0.4 9.5 14th 0 19.4 lowest 0%
Broome Airport 29.8 +0.6 33.2 11th 14.3 -0.9 9.7 27th 0 18.7 lowest 0%
Curtin Aero 31.1 +0.3 34.5 10th 16.0 -0.7 13.2 7th 0 7.6 lowest 0%
Cygnet Bay 28.2 -0.5 30.6 16th 16.7 +0.1 12.9 29th 0 20.0 lowest 0%
Fitzroy Crossing Aero 31.5 +1.1 36.7 11th 12.1 -0.9 7.7 27th 0 7.3 lowest 0%
De Grey (district 04)
Bedout Island 25.7 0.0 30.4 5th 21.2 +0.3 18.1 29th
Karratha Aero 26.5 0.0 31.0 1st 16.2 +1.1 9.7 27th 67.2 36.0 high 187%
Legendre Island 25.2   28.5 5th 19.8   15.3 28th
Mandora 29.9 +0.8 32.9 16th 14.7 +0.6 9.7 29th 0.2 17.1 average 1%
Marble Bar 27.1 +0.1 32.6 1st 13.8 +0.5 8.6 29th 31.6 24.6 high 128%
Pardoo Station 28.8 +0.4 32.5 10th     10.0 28th 71.5 27.1 high 264%
Port Hedland Airport 28.2 +0.6 31.3 3rd 15.1 +0.9 9.5 24th 58.8 23.6 high 249%
Roebourne Aero 27.7 -0.3 31.6 2nd 15.1 +1.5 7.1 28th 40.4 34.4 average 117%
Fortescue (district 05)
Barrow Island Airport 24.5 +0.2 29.5 5th 19.0 +0.2 14.7 28th 49.4 35.8 average 138%
Learmonth Airport 24.9 +0.1 28.5 3rd 13.3 +0.2 6.8 26th 91.2 43.2 high 211%
Mardie 28.1 -0.1 33.0 3rd 16.2 +2.2 10.3 30th 0.2 37.3 low 1%
Onslow Airport 26.3 +0.3 31.5 3rd 15.3 +1.0 10.4 28th 99.8 46.5 high 215%
Thevenard Island 25.8 +0.3 30.2 1st 18.3 -0.3 12.5 28th 61.8 37.4 high 165%
Wittenoom 24.0 -0.5 30.6 1st 13.8 +1.0 7.3 28th 92.0 29.6 high 311%
West Gascoyne (district 06)
Carnarvon Airport 24.4 +0.9 31.6 3rd 12.2 0.0 7.5 24th 53.6 46.1 high 116%
Denham 23.4 +0.5 26.0 16th 14.2 +0.3 12.0 15th 112.4 54.4 v high 207%
Shark Bay Airport 23.8 -0.1 30.2 3rd 11.6 -0.1 7.2 27th 104.2 46.5 high 224%
East Gascoyne (district 07)
Newman Aero 22.6 -0.4 27.8 3rd 8.7 +1.3 2.0 27th 54.8 16.2 high 338%
Paraburdoo Aero 24.6 -0.5 29.8 3rd 11.7 +0.5 5.3 28th 58.0 24.0 high 242%
Murchison (district 07A)
Meekatharra Airport 20.7 +1.0 27.1 2nd 8.9 +0.1 5.0 20th 15.6 29.6 average 53%
Mount Magnet Aero 20.0 +0.1 27.8 3rd 8.2 -0.1 3.5 15th 38.8 21.0 high 185%
Paynes Find 19.8 +0.4 28.3 3rd 6.2 -0.4 0.7 29th 30.6 40.1 average 76%
North Coast (district 08)
Dalwallinu 18.3 -0.4 26.2 3rd 7.5 +0.4 3.0 30th 57.6 32.3 highest 178%
Geraldton Airport 21.4   26.4 3rd 10.4   5.6 24th 61.0
Kalbarri 23.3 +0.4 26.2 16th 10.7 -0.3 5.9 20th 48.6 77.1 low 63%
Morawa Airport 19.7 -0.5 27.4 3rd 7.5 0.0 1.9 30th 54.8 38.5 high 142%
Mullewa 20.4 +0.4 28.1 3rd 8.7 +0.1 5.6 29th 36.4 62.9 low 58%
North Island 22.5 +0.2 25.9 17th 16.8 +0.2 13.1 17th 37.2 58.7 low 63%
Wongan Hills 18.5 +0.3 24.8 3rd 7.7 0.0 2.5 30th 53.2 69.4 average 77%
Central Coast (district 09)
Badgingarra Research Stn 18.9 +0.1 25.1 3rd 8.7 +0.3 4.2 8th 54.0 97.0 low 56%
Bickley 16.1 -0.1 20.6 3rd 7.9 -0.2 3.8 30th 205.8 194.9 average 106%
Garden Island HSF 18.5 -0.6 22.4 17th 12.2 +0.1 8.2 8th 157.6 106.7 high 148%
Gingin Aero 19.4 -0.3 24.6 17th 7.1 -0.1 1.1 30th 94.2 109.8 average 86%
Jandakot Aero 19.1 0.0 23.7 17th 8.0 +0.6 1.9 30th 125.8 152.3 average 83%
Jurien Bay 21.1 +0.4 24.4 24th 10.0 -0.2 4.9 29th 125.9 104.5 high 120%
Lancelin 20.7 +0.4 24.4 17th 10.6 -0.2 6.6 8th 108.3 116.4 average 93%
Millendon (Swan Valley) 19.1   23.5 17th 8.4   3.8 8th 118.0
Pearce RAAF 19.3 +0.4 24.2 17th 9.3 0.0 4.4 8th 116.8 130.0 average 90%
Perth Airport 19.3 +0.3 24.1 17th 8.9 -0.1 3.9 29th 120.8 155.4 average 78%
Perth Metro 19.2 -0.3 24.1 17th 8.5 -0.1 3.8 29th 126.6 124.5 average 102%
Rottnest Island 19.0 +0.2 22.2 17th 13.6 +0.2 10.3 8th 112.2 95.9 average 117%
Swanbourne 19.2 -0.3 23.5 17th 10.5 -0.1 6.4 29th 163.6 123.8 high 132%
South Coast (district 09A)
Albany 17.4 +0.8 22.1 17th 9.3 +0.2 5.6 3rd 83.2 131.3 low 63%
Albany Airport 17.4   21.6 17th 7.5   1.9 3rd 54.2
Bridgetown 16.5 -0.3 20.9 17th 4.2 -1.0 -0.7 8th 124.0 104.7 average 118%
Bunbury 18.3 -0.2 21.2 16th 7.5 -0.5 2.6 2nd 178.0 134.2 high 133%
Busselton Aero 17.5 -0.4 20.2 16th 8.0 +0.4 4.2 29th 138.6 125.1 average 111%
Cape Leeuwin 18.3 +0.9 21.6 17th 12.6 +0.4 10.5 24th 116.6 174.4 low 67%
Cape Naturaliste 18.1 +0.7 20.7 17th 11.6 +0.1 7.7 29th 128.4 161.7 average 79%
Collie East 17.0 -0.4 21.4 17th 4.2 -0.1 -1.3 2nd 133.2 105.1 average 127%
Donnybrook 17.8 +0.3 22.5 17th 6.5 -0.2 2.4 29th 161.4 187.1 average 86%
Dwellingup 16.6 +0.6 20.7 17th 6.0 -0.5 0.7 2nd 200.8 235.3 average 85%
Esperance 18.6 +0.5 26.4 4th 9.6 +0.4 4.9 2nd 42.4 77.0 low 55%
Esperance Aero 18.2 +0.8 25.8 4th 8.7 +0.2 4.3 2nd 52.4 66.0 average 79%
Hopetoun North 19.0 0.0 27.6 4th 8.8 +0.3 3.2 3rd 66.4 50.4 high 132%
Jarrahwood 17.4 +0.1 21.5 17th 4.1 -1.2 -0.7 3rd 159.4 156.2 average 102%
Mandurah 18.4 -0.3 20.7 24th 11.3 -0.2 7.7 29th 123.0 115.7 average 106%
Manjimup 15.7 +0.3 20.6 17th 7.1 -0.4 3.5 8th 109.6 161.1 low 68%
North Walpole 17.2 +0.2 20.8 17th 9.3 -0.6 5.5 3rd 106.2 155.5 low 68%
Shannon 15.4 -0.3 19.2 17th 7.0 -0.6 2.1 2nd 127.4 140.8 average 90%
Windy Harbour 17.6 -0.2 21.3 18th 8.8 -0.7 5.4 4th 207.6 170.9 high 121%
North Central (district 10)
Bencubbin 17.6 +0.1 25.1 3rd 6.7 -0.5 2.1 30th 40.4 48.0 average 84%
Cunderdin Airfield 18.1 -0.5 23.2 17th 6.6 +0.7 0.5 30th 41.0 35.1 average 117%
Kellerberrin     25.0 3rd 6.1 -0.6 0.5 3rd 37.9 52.8 average 72%
Merredin 18.0 +0.6 25.2 3rd 7.1 +0.4 1.0 29th 39.2 48.6 average 81%
Northam 18.3 +0.3 23.0 17th 5.7 -0.7 0.2 30th 48.6 78.2 low 62%
York 18.5 0.0 23.0 17th 5.1 +0.5 0.5 29th 49.0 56.4 average 87%
South Central (district 10A)
Beverley 17.9 -0.1 22.2 17th 6.0 +0.1 0.6 30th 45.4 76.8 low 59%
Brookton 17.5 +0.3 21.6 17th 5.2 -0.3 0.6 30th 62.3 83.9 average 74%
Hyden 18.2 +0.7 26.0 3rd 5.2 -0.4 -1.0 30th 28.2 48.3 low 58%
Jacup 17.2 +0.3 24.5 4th 6.5 -0.1 2.2 30th 40.4 41.9 average 96%
Katanning 15.6 -0.5 19.9 17th 7.1 +0.3 3.2 30th 59.2 54.9 average 108%
Lake Grace 16.9 -0.1 23.3 4th 6.2 -0.2 1.4 30th        
Narembeen 18.0 +0.4 25.0 3rd 6.8 +0.4 1.3 30th 36.9 50.6 average 73%
Narrogin 16.2 +0.7 20.5 17th 5.0 -1.4 0.5 2nd 84.2 85.2 average 99%
Newdegate Research Station 16.8 0.0 23.9 4th 5.0 0.0 -0.4 30th 31.4 48.8 low 64%
Pingelly 16.9 +0.4 21.4 3rd 4.7 -1.8 0.4 2nd 62.0 80.7 average 77%
Ravensthorpe 18.9 +1.6 26.0 4th 8.1 +0.2 4.5 30th 22.4 43.4 low 52%
Wagin 16.2 -0.2 20.5 17th 6.2 0.0 0.6 2nd 70.5 71.3 average 99%
Wandering 16.6 -0.4 20.6 17th 4.9 +0.4 -0.1 2nd 110.0 77.3 high 142%
Eucla (district 11)
Balladonia 19.4 +1.3 25.0 4th 6.4 +0.6 0.9 25th 16.4 25.8 average 64%
Eucla 18.7 0.0 23.2 5th 8.3 +0.1 2.7 30th 47.2 30.2 high 156%
Eyre 20.1 +1.1 25.9 5th 6.9 +0.2 -0.6 22nd
Forrest 19.3 +0.2 23.8 5th 6.0 0.0 1.4 18th 18.6 15.2 high 122%
Red Rocks Point 19.1 -0.1 24.2 5th 9.4 +0.6 3.4 30th 65.8 34.3 high 192%
South East (district 12)
Bulga Downs 20.3 +0.4 27.3 3rd 5.2 -1.1 -0.1 30th
Kalgoorlie-Boulder Airport 18.4 +0.8 25.0 3rd 7.0 +0.7 0.6 14th 11.6 27.2 average 43%
Laverton Aero 19.0 +0.6 25.2 3rd 6.3 -0.7 1.5 12th 19.6 15.2 average 129%
Leinster Aero 19.5 +0.3 26.8 3rd 6.3 -1.0 1.9 30th 16.6 15.6 average 106%
Leonora Aero 20.1 +0.9 26.8 3rd 6.0 -1.2 -0.3 30th 7.0 14.5 low 48%
Munglinup West 18.2 +0.6 25.8 4th 7.6 -0.1 4.0 2nd 29.0 39.2 average 74%
Norseman Aero 18.4 +0.4 23.4 3rd 4.5 -0.3 -1.9 25th 13.8 16.9 average 82%
Salmon Gums Res.Stn. 17.7 +0.8 24.1 4th 5.8 +0.2 -2.1 25th 28.4 37.9 average 75%
Southern Cross Airfield 17.8 -0.2 25.9 3rd 5.4 +0.9 0.2 30th 42.6 26.8 high 159%
North East (district 13)
Carnegie 21.1 -0.1 26.6 3rd 7.0 -0.1 -0.8 28th 15.0 15.3 average 98%
Giles Meteorological Office 21.2 +1.0 28.6 9th 6.4 -1.6 0.7 24th 0.2 18.4 low 1%
Telfer Aero 26.0 +0.7 31.3 10th 11.5 -0.4 5.9 27th 1.6 12.9 average 12%
Warburton Airfield 21.1 +0.4 26.3 7th 6.8 +0.2 -1.5 28th 7.6 18.2 average 42%
Wiluna 20.6 +0.7 28.0 3rd 6.6 -0.2 1.5 20th 32.9 23.8 high 138%
Wiluna Aero 20.4   27.6 3rd 6.9   1.4 30th 39.2
Offshore Islands (district 200)
Adele Island 28.2   29.4 12th     21.9 30th
Browse Island 28.7   29.7 2nd     24.9 29th
Rowley Shoals 26.7   28.1 9th     22.8 25th

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 9 am on Monday 2 July 2018. 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.

Further information

Media
(03) 9669 4057
Enquiries