Western Australia in March 2019: a record hot start to autumn

It was a record hot start to autumn for Western Australia, immediately after the State had experienced a very hot summer. The statewide mean temperature (average of maximum and minimum temperature) was the highest on record, and exceeded previous March record by a large margin. Daytime and overnight temperatures were warmer than normal for most of the State apart from some coastal areas. For WA as a whole, the mean minimum temperature was the highest on record for March and mean maximum temperature was the second-highest. The statewide March rainfall was below average, though above average rainfall was observed in parts of the Pilbara coast and adjacent inland due to severe tropical cyclone Veronica late in the month, and pockets in the State's southwest quadrant from a cloudband and thunderstorms.

Wet in parts of the Pilbara coast, dry in the Kimberley

  • March rainfall was 36% below average for WA
  • The north and east Kimberley saw the dry 'wet season' continued with March rainfall totals mostly 20 to 50% of March average
  • Severe tropical cyclone Veronica produced rainfall, which were five to seven times of March average, along the Pilbara coast and adjacent inland between Port Headland and Karratha; a number of sites had their wettest March on record or wettest March since 1988
  • Port Hedland Airport and Carlindie recorded a daily rainfall 179.4 mm on the 24th and 176.0 mm on the 26th respectively, which was their new March record
  • Moderated falls on the 7th and 8th from a cloudband, and on the 20th from thunderstorms, resulted in a number of sites in the South Coastal district having their wettest March for over 2 decades; a daily rainfall of 74 mm on the 20th at Narrikup West was it wettest March day in 23 years of record
  • Areas along the west coast to the north of and around Perth, and the State's southern coast east of Esperance mostly recorded less than 10 mm monthly rainfall totals; Karara in the eastern Central West district had its driest March since 1997

Hot days and very warm nights for most WA

  • Mean temperature (average of maximum and minimum temperature) was 2.37 °C above average, which was the highest on record and exceeded previous record (+2.05 °C in March 1980) by a large margin
  • The mean maximum temperature was 2.65 °C above average for WA, which was the second-highest on record and just fell short of the record (+2.70 °C in March 1980)
  • The mean minimum temperature was 2.09 °C above average for WA, which was the highest on record and exceeded previous record (+1.72 °C in March 2016) by a large margin
  • The southeast of the State sweated through the last day of summer and the first day of autumn; Eucla set new records for warmest March night and hottest March day on the 1st, while Forrest broke its highest Mach temperature record
  • Extreme heat was sustained over a broad area from the Pilbara, Gascoyne to the Southern Interior between the 9th and 11th, with temperatures in many sites reaching mid-to-high 40s and set new March records
  • Roebourne Airport recorded a national highest March temperature of 48.1 °C on the 10th, previous record was 47.8 °C on 6 March 2007 at Carnarvon Airport
  • Mean maximum temperatures were over 39 °C in inland northern and eastern WA, with a number of sites had their hottest March on record
  • Mean maximum temperatures were 33-34 °C in the Central Wheat Belt and southern Goldfield, with a number of sites had their warmest March for over 2 decades
  • Nights were very warm with mean minimum temperatures of 25 °C to 28 °C in the Pilbara and the northwest offshore islands, some sites had their warmest March nights on record

Severe tropical cyclones Savannah and Veronica

  • A tropical low was identified about 970 kilometers east of Christmas Island on the 8th, and later became Tropical Cyclone Savannah about 110 kilometers west of the Cocos (Keeling) Islands on the 14th. Strong to gale force winds were experienced on the islands. Vegetation damage and minor property damage were reported. Savannah tracked southwest and intensified to be a severe cyclone (category 4) on the 17th.
  • A tropical low developed to Tropical Cyclone Veronica to the northwest of Broome in early morning on the 20th. Veronica intensified rapidly to become a severe cyclone (category 4) on the 21st, then tracked southerly towards the Pilbara coast and was located only about 50 kilometers north of the coastline to the west of Port Hedland as a category 3 system on the 24th. Veronica remained almost motionless for the next 24 hours and the coastal and adjacent inland areas between Port Hedland and Karratha had subjected to a prolong period of destructive winds and very heavy rainfall. Veronica weakened to a category 2 system on the 25th before moving westwards and finally downgraded to a tropical low to the west of Karratha on the 26th and passed the Exmouth on the27th. Significant flooding occurred and many homes were evacuated in the Port Hedland area. Many streams and waterways in the De Grey catchment reached minor flood level. (for more details check Severe Tropical Cyclone Veronica report)

Further information

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Extremes in March 2019
Hottest day 48.1 °C at Roebourne Aero on the 10th
Warmest days on average 40.7 °C at Telfer Aero
Coolest days on average 21.2 °C at Albany
Coldest day 16.6 °C at Mount Barker on the 28th
Coldest night 2.8 °C at Salmon Gums Res.Stn. on the 30th
Coolest nights on average 12.3 °C at Jarrahwood
Warmest nights on average 27.9 °C at Bedout Island
Warmest night 33.0 °C at Bidyadanga on the 15th
Warmest on average overall 33.8 °C at Telfer Aero
Coolest on average overall 18.1 °C at North Walpole
18.1 °C at Rocky Gully
18.1 °C at Shannon
Wettest overall 592.5 mm at Sherlock
Wettest day250.0 mm at Sherlock on the 25th
Strongest wind gust 154 km/h at Roebourne Aero on the 24th

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 March daily rainfall
New record
(mm)
Old
record
Years of
record
Port Hedland Airport 179.4 on the 24th 156.8 on the 29th in 1988 76
Carlindie 176.0 on the 26th 161.0 on the 2nd in 1961 64
Narrikup West 74.0 on the 20th 50.0 on the 10th in 2000 23



Record highest March total rainfall
New record
(mm)
Old
record
Years of
record
Average for
March
Carlindie 419.0 337.9 in 1934 82 64.3
Narrikup West 103.0 90.9 in 2000 23 41.1

Highest March total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
March
Wallareenya 340.0 343.4 in 1988* 67.7
Frankland 58.0 65.5 in 1971* 23.6
Cranbrook 63.0 86.0 in 1998 24.3

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





Lowest March total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
March
Karara 1.4 0.4 in 1997 25.3

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




Record highest March temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Eucla 46.9 on the 1st 44.2 on the 19th in 1986 104 25.1
Port Hedland Airport 47.0 on the 10th 45.9 on the 1st in 2005 71 36.8
Meekatharra Airport 44.5 on the 11th 43.7 on the 1st in 1985 69 34.2
Wittenoom 45.7 on the 10th 43.9 on the 26th in 1959 66 36.7
Giles Meteorological Office 44.6 on the 11th 42.2 on the 1st in 2016 63 33.8
Wiluna 44.0 on the 11th = 44.0 on the 1st in 1985 61 34.0
Onslow Airport 47.2 on the 10th 46.3 on the 3rd in 2016 53 36.1
Gascoyne Junction 46.9 on the 11th 46.5 on the 6th in 2007 46 37.6
Telfer Aero 46.3 on the 10th 45.2 on the 1st in 2016 45 37.5
Doongan 39.0 on the 9th 38.8 on the 4th in 2010 31 33.3
Carnegie 45.5 on the 10th 44.7 on the 9th in 1989 30 34.2
Warburton Airfield 44.8 on the 10th 43.5 on the 2nd in 1988 29 34.1
Laverton Aero 43.1 on the 9th 42.0 on the 6th in 2008 28 30.5
Forrest 46.5 on the 1st 43.6 on the 11th in 2013 27 29.2
Pardoo Station 45.6 on the 9th 44.5 on the 28th in 2018 25 36.5
Mount Magnet Aero 42.4 on the 11th 42.0 on the 1st in 1996 24 33.2
Paraburdoo Aero 45.7 on the 10th 44.8 on the 4th in 2007 24 36.8
Newman Aero 45.2 on the 10th 43.3 on the 4th in 2007 23 35.3
Fitzroy Crossing Aero 44.6 on the 9th 42.5 on the 23rd in 2018 22 37.0



Record highest March mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Giles Meteorological Office 38.2 38.1 in 1986 62 33.8
Warburton Airfield 38.1 37.9 in 1954 44 34.1
Argyle Aerodrome 39.1 = 39.1 in 1998 24 35.6
Newman Aero 39.0 38.8 in 2016 22 35.3
Dalwallinu 33.1 = 33.1 in 1998 21 31.6

Highest March mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
March
Meekatharra Airport 37.1 38.6 in 1980 34.2
Wiluna 36.7 37.2 in 1986* 34.0
Kalgoorlie-Boulder Airport 32.3 =32.3 in 1994 29.4

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




Lowest March mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
March
Albany 21.2 20.7 in 1960* 22.3

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




Record highest March daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Eucla 27.5 on the 1st 27.1 on the 26th in 2013 104 16.0
Giles Meteorological Office 30.7 on the 10th 30.4 on the 6th in 1986 63 20.6
Bidyadanga 33.0 on the 15th 30.0 on the 11th in 2016 61 24.9
Murchison 29.0 on the 13th = 29.0 on the 7th in 2000 30 20.3
Argyle Aerodrome 30.4 on the 22nd = 30.4 on the 3rd in 2007 25 24.8
Mount Magnet Aero 29.7 on the 5th 28.1 on the 13th in 2015 24 20.2
Newman Aero 32.1 on the 8th 31.0 on the 4th in 1998 23 21.9
Fitzroy Crossing Aero 28.4 on the 7th = 28.4 on the 6th in 2016 22 24.0



Record highest March mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Port Hedland Airport 26.5 26.4 in 2010 70 24.6
Meekatharra Airport 24.8 24.6 in 1980 68 21.3
Onslow Airport 27.0 26.5 in 2014 52 24.2
Learmonth Airport 24.9 = 24.9 in 2005 44 23.0
Warburton Airfield 24.0 22.8 in 1953 44 20.1
Carnegie 23.6 22.6 in 2017 29 20.1
Murchison 24.0 23.5 in 2018 29 20.3
Laverton Aero 21.0 20.6 in 2005 27 18.3
Forrest 16.2 = 16.2 in 2016 26 14.4
Mount Magnet Aero 23.2 22.9 in 2005 23 20.2
Paraburdoo Aero 26.2 25.9 in 2010 23 23.4
Thevenard Island 27.8 27.3 in 2014 23 26.1
Newman Aero 25.7 25.0 in 2016 22 21.9

Highest March mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
March
Eucla 17.5 17.9 in 1971* 16.0
Giles Meteorological Office 23.8 24.3 in 1986 20.6
Eyre 15.6 15.7 in 1996 14.2
Argyle Aerodrome 26.7 26.9 in 1998 24.8

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




Record highest March mean temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Learmonth Airport 32.0 31.7 in 2018 44 29.7
Warburton Airfield 31.0 30.4 in 1953 44 27.1
Carnegie 30.6 30.0 in 2005 29 27.2
Laverton Aero 27.3 = 27.3 in 2005 27 24.4
Mount Magnet Aero 29.4 = 29.4 in 2005 23 26.7
Paraburdoo Aero 33.1 33.0 in 2010 23 30.1
Newman Aero 32.4 31.9 in 2016 22 28.6

Highest March mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
March
Meekatharra Airport 31.0 31.6 in 1980 27.8
Giles Meteorological Office 31.0 31.2 in 1986 27.2
Argyle Aerodrome 32.9 33.0 in 1998 30.2



Summary statistics for March 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
March
2019
Diff
from
average
Highest for
March
2019
Mean for
March
2019
Diff
from
average
Lowest for
March
2019
Total for
March
2019
Average
for
March
Rank of
March
2019
Fraction of
March
average
North Kimberley (district 01)
Doongan 35.2 +1.9 39.0 9th 22.8 +0.8 20.0 8th 42.8 196.5 v low 22%
Troughton Island 32.8 +0.8 34.7 14th 27.4 +0.8 21.4 15th 100.6 131.0 average 77%
Truscott 33.8 +1.1 36.9 3rd 25.6 +0.4 20.8 10th 84.8 178.6 low 47%
Wyndham Aero 39.3 +3.2 43.9 9th 26.7 +1.0 20.0 10th 42.4 143.1 low 30%
East Kimberley (district 02)
Argyle Aerodrome 39.1 +3.5 42.0 22nd 26.7 +1.9 23.7 13th 32.0 146.0 low 22%
Halls Creek Airport 38.5   42.1 9th 23.2   18.0 29th 72.4
Kununurra Aero 38.1 +2.4 41.9 9th 24.4 +0.1 21.3 10th 53.2 145.0 low 37%
Warmun 37.6 +1.7 40.5 9th 23.7 +0.5 20.6 28th 36.0 116.1 low 31%
West Kimberley (district 03)
Bidyadanga 36.2 +0.8 42.0 30th 27.3 +2.4 24.0 16th 69.6 94.7 average 73%
Broome Airport 34.4 +0.4 41.1 30th 26.0 +0.5 22.6 3rd 72.0 98.6 average 73%
Curtin Aero 36.9 +0.7 41.9 10th 24.3 +0.1 20.7 1st 116.6 146.7 average 79%
Cygnet Bay 34.7 +1.0 37.8 8th 25.9 +1.2 23.9 26th 49.0 159.2 low 31%
Derby Aero 36.6 +1.2 40.6 9th 25.6 +0.5 22.9 1st 90.4 128.4 average 70%
Fitzroy Crossing Aero 39.8 +2.8 44.6 9th 25.0 +1.0 20.8 29th 60.0 108.4 low 55%
De Grey (district 04)
Bedout Island 33.8 +0.2 39.9 15th 27.9 +0.3 22.1 18th
Karratha Aero 36.3 +0.1 45.5 10th 27.4 +1.5 22.0 24th 71.0 47.3 high 150%
Mandora 38.0 +1.1 45.5 15th 26.1 +2.1 23.5 2nd 18.0 73.1 average 25%
Marble Bar 39.7 +1.7 47.4 10th 26.4 +1.3 20.8 17th 246.2 85.5 high 288%
Port Hedland Airport 37.3 +0.5 47.0 10th 26.5 +1.9 23.5 26th 382.0 55.6 v high 687%
Roebourne Aero 38.3 +0.4 48.1 10th 26.6 +1.3 21.3 24th
Fortescue (district 05)
Barrow Island Airport 34.8 +1.4 39.4 16th 27.3 +0.8 24.7 2nd 3.8 54.1 average 7%
Karijini North 38.6   45.8 10th 26.2   20.1 25th 29.6
Learmonth Airport 39.0 +2.5 45.2 10th 24.9 +1.9 20.5 1st 28.6 40.6 high 70%
Onslow Airport 38.1 +2.0 47.2 10th 27.0 +2.8 22.7 1st 34.2 71.3 average 48%
Thevenard Island 35.2 +1.2 38.4 16th 27.8 +1.7 24.7 1st 58.8 34.6 high 170%
Wittenoom 38.6 +1.9 45.7 10th 26.7 +2.3 20.1 25th 42.2 69.1 average 61%
West Gascoyne (district 06)
Carnarvon Airport 33.1 +1.5 43.1 6th 23.8 +1.7 20.3 2nd 0.2 16.4 low 1%
Denham 31.1 0.0 40.8 30th 23.0 +0.9 19.5 2nd 0.2 14.8 average 1%
Murchison 37.7 +2.3 43.5 11th 24.0 +3.7 19.0 1st 0.9 30.0 low 3%
Shark Bay Airport 35.2 +1.1 41.9 30th 22.3 +1.1 18.6 3rd 0.2 18.9 average 1%
East Gascoyne (district 07)
Newman Aero 39.0 +3.7 45.2 10th 25.7 +3.8 18.8 31st 12.2 42.6 average 29%
Paraburdoo Aero 39.8 +3.0 45.7 10th 26.2 +2.8 21.3 18th 24.4 49.4 average 49%
Murchison (district 07A)
Meekatharra Airport 37.1 +2.9 44.5 11th 24.8 +3.5 19.7 18th 14.0 29.7 average 47%
Mount Magnet Aero 35.7 +2.5 42.4 11th 23.2 +3.0 17.5 25th 39.0 36.1 average 108%
Paynes Find 35.1 +2.1 40.8 10th 21.0 +2.8 14.4 30th 18.8 25.0 average 75%
North Coast (district 08)
Dalwallinu 33.1 +1.5 39.0 4th 17.2 +0.7 10.3 2nd 8.2 24.3 average 34%
Geraldton Airport 31.7   40.4 31st 19.1   11.5 3rd 0.2
Kalbarri 33.6 +1.0 40.4 30th 21.3 +2.1 13.4 16th 0.1 12.3 low 1%
Morawa Airport 35.5 +2.2 39.9 27th 19.4 +1.3 13.4 2nd 1.6 16.9 low 9%
Mullewa 35.8 +2.1 40.6 10th 20.3 +1.9 14.4 2nd 0.5 19.4 low 3%
North Island 27.3 -0.8 31.4 31st 21.9 0.0 19.6 2nd 0.2 5.9 low 3%
Wongan Hills 32.9 +2.0 40.0 4th 17.0 +0.6 11.5 25th 4.0 20.5 average 20%
Central Coast (district 09)
Badgingarra Research Stn 32.7 +0.8 37.3 18th 16.7 +0.3 12.3 29th 0.4 16.3 low 2%
Bickley 28.7 +0.8 37.2 4th 15.0 +0.4 9.2 24th 8.0 25.7 low 31%
Garden Island HSF 26.9 -0.1 36.5 4th 18.1 -0.2 13.4 25th 12.2 14.8 average 82%
Gingin Aero 32.1 +1.4 41.4 4th 16.1 +0.8 10.3 3rd 2.8 19.5 low 14%
Gosnells City 31.1 +0.6 40.0 4th 17.4 +0.1 11.5 29th 1.4 16.5 v low 8%
Jandakot Aero 30.2 +0.6 39.7 4th 16.6 +1.1 7.9 2nd 7.4 16.1 average 46%
Jurien Bay 28.8 -0.6 37.0 31st 17.8 +1.2 12.3 24th 1.0 14.4 low 7%
Lancelin 27.4 -1.1 37.5 4th 16.9 +0.1 10.0 29th 2.2 15.2 low 14%
Millendon (Swan Valley) 31.6   40.7 4th 17.0   9.5 2nd 3.8
Pearce RAAF 32.5 +1.9 41.1 4th 16.8 +0.8 10.5 2nd 2.8 16.4 average 17%
Perth Airport 31.0 +1.3 40.4 4th 17.2 +1.3 10.1 2nd 4.4 16.0 low 28%
Perth Metro 30.1 +0.5 39.5 4th 17.3 +0.6 11.0 24th 6.2 19.2 average 32%
Rottnest Island 26.1 +0.1 33.8 31st 18.5 -0.2 13.9 29th 8.8 17.6 average 50%
Swanbourne 28.0 -0.8 39.4 4th 17.8 +0.4 11.8 24th 8.0 20.7 average 39%
South Coast (district 09A)
Albany 21.2 -1.1 26.8 19th 15.8 +1.0 12.3 27th 42.7 38.4 average 111%
Albany Airport 22.7   33.3 19th 13.8   8.4 12th 55.2
Bridgetown 26.1 -1.3 33.3 19th 12.8 +0.9 5.8 30th 50.4 21.8 high 231%
Bunbury 28.2 +0.5 36.7 4th 14.7 +0.4 6.2 2nd 21.2 19.0 high 112%
Busselton Aero 27.5 -0.4 33.5 4th 14.1 +0.7 6.7 25th 29.6 19.4 high 153%
Cape Leeuwin 22.1 -0.6 29.4 31st 16.8 +0.1 13.5 26th 34.8 28.4 high 123%
Cape Naturaliste 25.7 +1.2 34.2 4th 15.0 -0.1 8.4 25th 37.8 22.9 high 165%
Collie East 28.2 0.0 35.6 18th 12.7 +0.6 5.3 2nd 27.8 17.6 high 158%
Donnybrook 28.1 +0.1 35.0 18th 14.8 +1.8 8.0 2nd 34.8 25.2 high 138%
Dwellingup 28.5 +1.5 36.7 4th 14.4 +1.4 7.1 2nd 19.2 26.3 average 73%
Esperance 24.6 -0.6 34.1 27th 15.7 +0.5 9.7 31st 15.4 29.8 average 52%
Esperance Aero 26.7 +0.7 35.6 27th 14.6 +0.1 8.2 30th 16.4 33.7 average 49%
Hopetoun North 23.9 -0.8 35.4 27th 15.4 +1.3 7.6 31st 22.6 31.8 average 71%
Jarrahwood 27.7 0.0 34.5 4th 12.3 +0.6 3.5 29th 34.6 21.9 high 158%
Mandurah 27.9 +0.1 37.2 4th 18.1 0.0 12.7 24th 17.4 16.5 average 105%
Manjimup 24.6 -0.2 33.5 19th 13.1 +0.6 8.1 25th 38.4 29.8 high 129%
North Walpole 22.2 -1.6 29.7 31st 13.9 -0.4 8.5 30th 48.6 33.8 high 144%
Rocky Gully 23.8 -1.3 33.6 19th 12.4 -0.1 4.9 30th 50.0 36.4 high 137%
Shannon 23.3 -1.5 33.3 19th 12.8 +0.2 7.1 30th 42.6 33.0 average 129%
Witchcliffe 24.3 -1.4 32.8 19th 13.6 +0.5 7.2 25th 19.0 26.3 average 72%
North Central (district 10)
Bencubbin 32.0 +1.2 37.6 4th 18.0 +1.7 11.3 25th 15.5 23.3 average 67%
Cunderdin Airfield 32.3 +1.3 39.1 4th 16.0 +0.6 9.7 25th 1.6 17.9 low 9%
Merredin 31.9 +1.6 38.0 4th 17.6 +1.3 11.0 25th 6.8 21.1 average 32%
Northam 32.1 +1.3 39.4 4th 16.4 +1.0 10.4 25th 6.1 18.5 average 33%
York 31.9 +1.2 38.5 4th 15.1 +0.8 8.4 25th 0.4 17.7 low 2%
South Central (district 10A)
Beverley 31.7 +0.9 39.2 4th 15.5 +0.8 8.2 25th 3.6 16.6 average 22%
Brookton 30.5 +1.1 37.7 4th 14.9 +0.5 6.5 24th 9.5 18.1 average 52%
Corrigin 29.8 +0.9 36.7 4th 15.1 +0.8 9.5 30th 25.6 21.3 average 120%
Hyden 31.3 +1.3 38.0 15th 14.9 +0.6 6.9 25th 6.6 20.5 average 32%
Jacup 24.9 -1.0 34.1 15th 12.8 +0.2 7.3 2nd 61.2 30.5 high 201%
Katanning 26.2 -0.9 33.3 4th 13.1 +0.1 7.7 30th 43.2 23.1 high 187%
Lake Grace 28.2 +0.2 35.1 15th 14.5 +0.1 8.4 25th 7.2 20.0 low 36%
Narembeen 31.6 +1.4 37.9 4th 15.4 +0.5 7.9 25th 19.0 20.9 average 91%
Narrogin 27.9 +0.5 35.5 4th 14.0 +0.9 8.1 24th 24.6 21.2 average 116%
Newdegate Research Station 28.2 +0.2 35.8 15th 13.1 +0.4 5.6 2nd 8.0 21.7 average 37%
Pingelly 29.2 +0.8 36.6 4th 15.1 +0.4 9.0 24th 24.8 17.5 high 142%
Ravensthorpe 26.2 -0.4 36.0 27th 14.2 +0.5 7.0 30th 21.5 32.6 average 66%
Wagin 27.5 -0.2 34.5 18th 14.0 +0.5 8.0 2nd 28.2 20.7 high 136%
Wandering 29.2 +0.3 37.0 4th 13.5 +0.9 5.1 2nd 19.6 16.9 average 116%
Eucla (district 11)
Balladonia 29.1 +1.0 35.6 9th 15.2 +1.6 9.2 31st 27.0 28.4 average 95%
Eucla 26.2 +1.1 46.9 1st 17.5 +1.5 10.8 27th 6.8 22.6 average 30%
Eyre 27.3 +1.6 37.0 9th 15.6 +1.4 7.5 5th 2.5 27.0 low 9%
Forrest 31.4 +2.2 46.5 1st 16.2 +1.8 8.1 31st 1.2 22.7 low 5%
Red Rocks Point 25.6 +1.3 45.1 1st 18.6 +1.5 12.7 27th 3.2 20.8 low 15%
South East (district 12)
Bulga Downs 34.5 +1.8 42.7 1st 21.2 +2.7 14.9 25th
Kalgoorlie-Boulder Airport 32.3 +2.9 38.8 13th     10.3 25th 0 25.2 lowest 0%
Laverton Aero 33.6 +3.1 43.1 9th 21.0 +2.7 12.5 30th 14.6 41.5 average 35%
Leinster Aero 34.5 +2.9 42.6 11th 21.5 +2.4 13.5 31st 45.4 37.4 high 121%
Leonora Aero 33.9 +2.5 42.8 9th 21.8 +2.8 13.5 31st 22.8 45.2 average 50%
Munglinup West 26.7 -0.3 36.3 15th 13.9 0.0 6.5 30th 13.0 32.5 low 40%
Norseman Aero 29.8 +1.1 36.4 20th 14.9 +0.8 5.8 30th 54.6 30.8 high 177%
Salmon Gums Res.Stn. 28.3 +1.0 35.8 20th 12.8 +0.2 2.8 30th 25.8 26.4 average 98%
Southern Cross Airfield 31.6 +1.0 38.0 10th 16.8 +1.5 9.8 29th 63.6 36.1 high 176%
North East (district 13)
Carnegie 37.6 +3.4 45.5 10th 23.6 +3.5 14.4 31st 7.9 32.4 average 24%
Giles Meteorological Office 38.2 +4.4 44.6 11th 23.8 +3.2 13.3 31st 3.0 35.1 low 9%
Telfer Aero 40.7 +3.2 46.3 10th 26.8 +2.7 22.0 2nd 22.4 70.9 average 32%
Warburton Airfield 38.1 +4.0 44.8 10th 24.0 +3.9 14.7 30th 1.2 29.8 low 4%
Wiluna 36.7 +2.7 44.0 11th     17.0 31st 15.3 37.0 average 41%
Wiluna Aero 36.9   44.2 9th 23.8   17.5 30th 14.4
Offshore Islands (district 200)
Adele Island 31.5   33.1 5th 27.1   21.9 17th
Browse Island 30.9   34.0 7th 27.2   22.7 16th
Rowley Shoals 30.5   32.8 4th     21.6 20th
Varanus Island 33.2 +0.5 37.4 10th 27.5 +0.5 24.7 23rd 10.0 43.8 average 23%

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 1 April 2019. 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.

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