Wednesday, 4 May 2022 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in April 2022: wet in north-western and southern coastal areas

Rainfall was above average in the north-west, along the mid-west coast, southern coastal areas and the east Kimberley in Western Australia, but below average rainfall was mostly in the Southern Interior District. Mean maximum temperatures were above average to the north-east of a line between Port Hedland and Eucla, while below average mean maxima were recorded in the west Pilbara, inland Gascoyne and eastern South West Land Division (SWLD). Mean minimum temperatures were above average for much of the state tending to near average in parts of the west and north.

Very wet in the west Pilbara, western Gascoyne and South East Coastal districts

• Rainfall was above average in the north-west, along the mid-west coast, southern coastal areas and the east Kimberley in WA, with very much above average (top 10% of historical observations since 1900) rainfall in the west Pilbara, west Gascoyne and South East Coastal districts.
• Ravensthorpe, Carnavon Airport and a number of other sites had their wettest April on record , while a dozen or so sites had their wettest l April for at least 20 years.
• A trough near the west coast moved eastward and produced daily rainfall of 40–120 mm in the western Pilbara and Gascoyne between on the 1st and 3rd, and then across southern and eastern parts of the SWLD on the 4th, including a few April daily rainfall records.
• A slow-moving trough with embedded weak low pressure system produced thunderstorms and moderate to heavy rainfall of 50–110 mm in the South East Coastal District on the 13th. Some sites had their highest April daily rainfall on record.
• Ravensthorpe recorded 111.2 mm on the 13th, which was its highest April daily rainfall on record, and also its second-highest annual daily rainfall on record.

Above average daytime temperatures in north-eastern WA

• Mean maximum temperatures were above average in the north-east of a line between Port Hedland and Eucla, while below average mean maxima were recorded in the west Pilbara, inland Gascoyne and eastern SWLD.
• The mean maximum temperature was 1 °C above the 1961-1990 average, although it was the coolest April since 2017 for Western Australia.
• Mean minimum temperatures were above average for much of the state tending to near average in parts of the west and north.
• The mean minimum temperature was 1.06 °C above the 1961-1990 average for Western Australia
• Very warm nights with minimum temperatures in the low 20s were recorded near the west coast on the 2nd, which were 8–10 °C above average. Many sites in the Lower West and South West districts had their warmest April night on record.

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top

Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Click on a map to show it full size in a pop-up window

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

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top