Tuesday, 1 August 2017 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in July 2017: Very warm daytime temperatures; average rainfall in southwest

Daytime temperatures in July 2017 were above average for most of Western Australia and the state-wide averaged mean maximum temperature was the highest on record. Mean minimum temperatures varied across WA, and the state-wide average was close to average. Rainfall was below average across large parts of the State, with WA as a whole recording below average rainfall, whilst the South West Land Division recorded near average rainfall.

Below average rainfall for most WA; near average for South West Land Division

• Rainfall for WA as a whole was below average
• Rainfall for WA for winter so far (June-July) was 4th-lowest on record, driest since June-July 2007
• Rainfall for the South West Land Division (SWLD) was near average
• Rainfall totals were less than 20 mm in the central and southeast WA; Eucla town had its driest July for 6 decades
• A few sites near the SWLD south coast had their highest total July rainfall for at least 20 years as a result of frequent cold fronts impacting on the region

Record high mean maximum temperature for WA

• The mean maximum temperature for WA was 2.3 °C above average and ranked highest in July; the previous record was 2.1 °C in July 2002
• Some sites in the Kimberley, Pilbara, and Southern Interior had their warmest July on record or warmest for at least 20 years
• Very warm days with temperatures in the mid-thirties were observed in the north on the 14th, 27th and 28th; several sites had their warmest July day on record
• Eucla and Forest in southeast WA reported their first temperature at or above 30  °C in July on the 28th
• Very cold days were recorded in southwest WA on the 1st and 5th; a number of sites had their coldest July day on record with a maximum temperature below 10 °C
• A mild to warm day was recorded near the west coast on the 18th; it was the warmest July day on record at Morawa Airport of the Central West district
• The mean minimum temperature for WA was about 0.4 °C above average
• The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) recorded a mean minimum temperature 1.0 °C above average; highest for 10 years
• A few sites in the Lower Southwest recorded their equal highest July mean minimum or highest in July for over 20 years
• Laverton Aerodrome in the Goldfields had its equal coldest July nights on record
• Very cold nights with freezing temperatures were experienced in central and southeastern WA during July; a number of records were broken
• A few sites near the Lower West coast and in the Great Southern had their warmest July night on record in mid-July or late July

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

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

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

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top