Monday 5 January 2026 - Monthly Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in December 2025

Rainfall

• Rainfall totals in December were above average for much of the Kimberley and parts of the Gascoyne districts, and below to very much below average for southern coastal districts as well as for parts of the Great Southern and Southern Interior districts.
• Western Australia's area-averaged rainfall total in December was 35.8 mm, 23% above the 1961–1990 average.
• Mundaring and South Holmwood Alert had their highest December daily rainfall on record.

Temperature

• Mean maximum temperatures in December were above to very much above average statewide except for parts of the Kimberley district where they were close to average.
• Western Australia's area-averaged mean maximum temperature was 37.2 °C, 2.04 °C above the 1961–1990 average, the sixth-warmest on record for all Decembers since 1910.
• Mean minimum temperatures in December were above to very much above average statewide except for parts of the Kimberley district where they were below to very much below average.
• Western Australia's area-averaged mean minimum temperature was 21.9 °C, 1.08 °C above the 1961–1990 average, the sixth-warmest on record for all Decembers since 1910.
• Western Australia's area-averaged mean temperature was 29.5 °C, 1.56 °C above the 1961–1990 average, the sixth-warmest on record for all Decembers since 1910.
• Some sites had their hottest December day (highest daily maximum temperature) on record.
• Windy Harbour had its highest December mean maximum temperature for at least 20 years.
• Some sites had their warmest December night (highest daily minimum temperature) on record.
• A few sites had their coldest December night (lowest daily minimum temperature) on record.
• Paraburdoo Aero had its highest December mean minimum temperature on record.
• Derby Aero and Wyndham Aero had their lowest December mean minimum temperature on record.
• Paraburdoo Aero had its highest December mean temperature on record.

Events

• High pressure systems near the Great Australian Bight brought warm air from inland parts to southern parts of Western Australia on 1, 2, 3 December, again on 15, 16, 17 December and also on 25, 26 December. This caused maximum temperatures to reach 12 to 14 °C above average. Perth experienced its second-hottest Christmas Day on record, with 42.1 °C (after 42.8 °C in 2021).
• For more details, visit the December national climate summary.

Extremes Maps Records Summaries Important notes the top

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Extremes in December 2025
Hottest day	47.5 °C at Eyre on the 17th
Warmest days on average	43.2 °C at Marble Bar
Coolest days on average	21.8 °C at Albany
Coldest day	18.3 °C at Albany on the 20th
Coldest night	0.8 °C at Eyre on the 7th
Coolest nights on average	11.4 °C at Jacup
Warmest nights on average	27.6 °C at Bedout Island 27.6 °C at Karratha Aero
Warmest night	32.8 °C at Karijini North on the 21st
Warmest on average overall	35.0 °C at Marble Bar
Coolest on average overall	18.6 °C at Albany Airport
Wettest overall	394.2 mm at Kalumburu
Wettest day	125.8 mm at Yampi Sound (Defence) on the 31st
Strongest wind gust	137.0 km/h at Yampi Sound (Defence) on the 31st

Extremes Maps Records Summaries Important notes the top

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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

Extremes Maps Records Summaries Important notes the top

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Record highest December daily rainfall
	New record (mm)		Old record		Years of record	Average for December
Mundaring	40.6	on the 15th	37.1	on 07 Dec 1951	122	16.6
South Holmwood Alert	25.4	on the 14th	22.2	on 28 Dec 2004	25	7.4

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Record highest December temperature
	New record (°C)		Old record		Years of record	Average for December
Cape Leeuwin	39.6	on the 25th	38.4	on 25 Dec 1968	119	21.9
Eyre	47.5	on the 17th	=47.5	on 19 Dec 2005	42	25.8
Windy Harbour	38.0	on the 25th	37.0	on 09 Dec 2021	39	22.0
North Walpole	37.3	on the 25th	=37.3	on 06 Dec 2019	22	22.8

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Highest December mean maximum temperature for at least 20 years
	Observed (°C)	Most recent higher		Average for December
Windy Harbour	23.6	24.0	in 1999	22.0

note: there may be gaps in the historical record at some sites, so it is possible more recent higher values have gone unreported

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Record highest December daily minimum temperature
	New record (°C)		Old record		Years of record	Average for December
Newdegate Research Station	24.0	on the 26th	23.3	on 27 Dec 2007	30	11.7
Lake Grace	25.5	on the 26th	25.0	on 28 Dec 2000	29	13.6
Roebourne Aero	32.3	on the 26th	31.9	on 28 Dec 2019	25	25.0
Bulga Downs	29.9	on the 17th	29.2	on 31 Dec 2010	24	20.4

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Record lowest December temperature
	New record (°C)		Old record		Years of record	Average for December
Kununurra Aero	18.3	on the 4th	19.0	on 13 Dec 1990	40	25.5
Cygnet Bay	14.8	on the 31st	18.6	on 07 Dec 1988	40	25.7
Windy Harbour	2.5	on the 24th	4.5	on 21 Dec 1994	39	13.0

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Record highest December mean minimum temperature
	New record (°C)	Old record		Years of record	Average for December
Paraburdoo Aero	27.4	26.6	in 2024	30	24.8

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Record lowest December mean minimum temperature
	New record (°C)	Old record		Years of record	Average for December
Derby Aero	25.3	25.4	in 1974	40	26.3
Wyndham Aero	25.6	=25.6	in 2015	26	26.7

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Record highest December mean temperature
	New record (°C)	Old record		Years of record	Average for December
Paraburdoo Aero	34.8	34.6	in 2019	30	32.8

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Extremes Maps Records Summaries Important notes the top

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Summary statistics for December 2025
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for December 2025	Diff from average	Highest for December 2025		Mean for December 2025	Diff from average	Lowest for December 2025		Total for December 2025	Average for December	Rank of December 2025	Fraction of December average
North Kimberley (district 01)
Doongan	33.8	-0.9	37.3	4th	22.7	-0.5	18.0	4th	187.1	217.1	average	86%
Kalumburu	35.7	0.0	39.9	4th	24.6	-0.5	22.3	4th	394.2	228.2	high	173%
Troughton Island	33.2	+0.2	35.2	1st	27.4	0.0	23.1	19th	196.4	123.8	high	159%
Truscott	34.0	-0.2	37.8	1st	25.6	-0.5	22.7	14th	201.6	196.0	average	103%
Wyndham Aero	36.0	-2.3	39.2	11th	25.6	-1.1	21.9	4th	274.2	147.0	high	186%
East Kimberley (district 02)
Halls Creek Airport	36.8	-1.6	41.6	5th	23.7	-1.4	19.5	4th	144.2
Kununurra Aero	36.9	-0.5	40.2	4th	24.3	-1.2	18.3	4th	89.6	142.7	low	63%
West Kimberley (district 03)
Bidyadanga	36.4	+1.4	41.6	2nd	24.8	-1.0	21.0	2nd	0.0	60.2	lowest	0%
Broome Airport	34.9	+0.9	39.0	11th	26.5	-0.1	22.7	23rd	70.8	64.3	high	110%
Curtin Aero	38.0	-0.6	43.8	8th	24.4	-0.8	21.7	16th	214.4	148.3	high	145%
Cygnet Bay	34.9	+0.1	37.2	8th	25.6	-0.1	14.8	31st	178.9	97.3	high	184%
Derby Aero	36.7	-0.7	41.4	5th	25.3	-1.0	21.3	9th	157.0	82.6	high	190%
Fitzroy Crossing Aero	39.2	-0.2	44.7	8th	26.0	+0.2	22.8	24th	110.0	133.3	average	82%
Yampi Sound (Defence)	36.7		41.5	8th	25.3		21.9	15th	347.6
De Grey (district 04)
Bedout Island	34.2	+0.7	36.1	1st	27.6	+0.4	26.2	4th
Karratha Aero	38.9	+2.8	45.7	26th	27.6	+1.9	24.4	3rd	0.0	13.9	lowest	0%
Legendre Island	34.1	+1.7	40.2	27th	27.1	+1.0	25.1	1st
Mandora	37.2	+0.4	43.8	31st	25.4	+0.8	22.2	4th	16.8	34.1	average	49%
Marble Bar	43.2	+1.2	46.6	8th	26.9	+0.5	22.5	22nd	50.2	35.4	high	142%
Pardoo Station	37.5	+0.6	41.6	3rd	23.9	-1.0	21.4	4th	1.4	23.7	average	6%
Port Hedland Airport	38.3	+1.5	44.6	6th	26.6	+2.3	24.3	3rd	6.0	18.9	average	32%
Roebourne Aero	41.4	+1.8	46.9	21st	27.2	+2.2	22.7	3rd	0.4	14.1	average	3%
Fortescue (district 05)
Barrow Island Airport	33.6	+1.2	38.0	2nd	25.5	+0.9	21.8	14th	0.0	8.8	lowest	0%
Karijini North	41.8		44.3	10th	27.4		23.0	17th	21.8
Learmonth Airport	39.3	+2.2	45.0	21st	22.2	+1.2	19.1	6th	0.0	5.7	lowest	0%
Mardie	39.0	+1.4	46.7	21st	25.8	+2.6	23.0	14th	0.8	9.2	average	9%
Onslow Airport	37.5	+1.5	44.5	26th	24.6	+2.0	21.3	28th	0.0	3.2	lowest	0%
Thevenard Island	33.5	+1.2	36.6	21st	24.8	+0.8	21.6	1st	0.0	6.2	lowest	0%
West Gascoyne (district 06)
Carnarvon Airport	31.2	+1.7	41.8	30th	22.0	+1.2	19.6	6th	0.0	5.0	lowest	0%
Murchison	41.7	+4.0	43.3	21st	16.8	-3.5	14.9	12th	1.2	12.1	average	10%
Shark Bay Airport	33.2	+0.6	43.2	23rd	21.0	+1.1	18.1	6th	0.0	6.8	lowest	0%
East Gascoyne (district 07)
Newman Aero	40.8	+1.4	44.1	28th	25.4	+1.1	17.6	3rd	35.4	35.4	average	100%
Paraburdoo Aero	42.2	+1.5	44.8	10th	27.4	+2.6	22.6	31st	14.0	26.7	average	52%
Murchison (district 07A)
Meekatharra Airport	39.1	+2.4	44.5	11th	24.7	+2.4	19.9	14th	21.2	14.3	high	148%
Mount Magnet Aero	38.1	+1.8	44.8	11th	22.7	+1.3	17.2	27th	36.6	17.5	high	209%
Paynes Find	37.8	+2.5	44.2	11th	20.3	+1.6	13.9	23rd	9.2	12.1	average	76%
North Coast (district 08)
Carnamah	38.6	+4.9	41.2	11th	19.5	+3.3	19.0	11th	0.0	8.4	lowest	0%
Dalwallinu	35.7	+2.1	43.0	11th	16.0	+0.1	10.3	27th	10.8	10.1	high	107%
Geraldton Airport	32.0	+0.5	44.0	24th	17.6	+0.5	12.7	21st	1.0	4.1	low	24%
Kalbarri	31.9	+0.6	42.3	23rd	19.3	+1.6	15.8	6th	0.0	3.5	lowest	0%
Morawa Airport	37.6	+2.0	44.0	16th	18.4	+0.7	12.8	27th	9.4	12.4	average	76%
Mullewa	36.9	+2.3	41.6	24th	18.9	+1.7	13.6	6th	14.6	8.3	high	176%
North Island	27.8	+1.0	35.6	24th	20.7	+0.6	19.0	2nd	0.0	3.4	lowest	0%
Wongan Hills	35.4	+2.6	41.8	11th	16.6	+0.8	10.2	27th	6.8	9.7	average	70%
Central Coast (district 09)
Badgingarra Research Stn	33.2	+1.0	42.0	25th	15.9	+0.7	10.1	27th	0.0	8.5	lowest	0%
Bickley	30.0	+1.5	39.4	25th	14.5	+0.6	8.6	27th	13.2	13.7	average	96%
Garden Island HSF	27.4	+1.5	41.8	25th	18.4	+0.9	13.9	21st	0.0	8.8	lowest	0%
Gingin Aero	32.2	+1.1	42.4	25th	16.0	+1.4	8.9	27th	0.0	8.9	lowest	0%
Jandakot Aero	31.2	+1.7	42.3	25th	16.5	+1.5	7.3	27th	7.0	9.8	average	71%
Jurien Bay	30.6	+2.2	42.9	24th	17.8	+2.0	13.0	4th	0.2	6.1	low	3%
Karnet	29.5	+1.2	39.1	25th	15.0	+1.4	9.5	27th	3.6	17.7	low	20%
Lancelin (Defence)	28.7		42.2	25th	17.0		12.4	31st	0.0
Millendon (Swan Valley)	32.8		42.2	25th	16.4		10.4	4th	2.8
Pearce RAAF	33.2	+2.5	43.0	25th	16.6	+1.9	11.2	27th	13.6	10.4	high	131%
Perth Airport	32.8	+3.5	43.0	25th	16.8	+1.7	8.4	27th	17.0	10.6	high	160%
Perth Metro	31.0	+1.4	42.1	25th	17.4	+0.8	11.7	27th	15.8	9.4	high	168%
Rottnest Island	26.4	+1.1	40.9	25th	18.4	+0.6	14.6	21st	0.4	9.7	low	4%
Swanbourne	29.1	+1.0	41.6	25th	17.6	+0.8	12.7	27th	4.0	9.6	average	42%
South Coast (district 09A)
Albany	21.8	0.0	31.0	15th	15.7	+1.6	10.5	21st	16.8	29.5	average	57%
Albany Airport	24.6	+0.9	37.8	15th	12.6	+0.2	5.7	21st	7.4	27.4	low	27%
Bridgetown	28.6	+0.7	38.3	25th	12.4	+1.2	4.8	21st	0.4	16.1	lowest	2%
Bunbury	28.6	+0.9	37.7	14th	14.3	+0.6	9.0	27th	0.0	14.9	lowest	0%
Busselton Aero	29.2	+0.9	39.9	25th	13.1	+0.6	6.7	21st	0.0	8.9	lowest	0%
Cape Leeuwin	24.2	+2.3	39.6	25th	17.0	+1.2	13.4	21st	0.8	20.0	lowest	4%
Cape Naturaliste	26.8	+3.0	36.4	14th	14.9	+0.9	10.0	21st	1.4	13.0	low	11%
Collie East	30.4	+1.4	39.5	25th	12.0	+0.3	5.4	27th	0.0	17.5	lowest	0%
Donnybrook	30.4	+2.0	38.5	14th	15.0	+2.5	9.8	4th	1.4	16.0	v low	9%
Dwellingup	30.3	+2.8	40.3	25th	13.7	+1.0	7.4	27th	0.0	20.0	lowest	0%
Esperance	26.2	+1.6	44.1	16th	15.2	+0.8	10.5	28th	0.0	18.6	lowest	0%
Esperance Aero	27.9	+1.8	43.0	16th	13.4	0.0	9.3	28th	0.8	20.7	v low	4%
Hopetoun North	25.2	+1.2	42.5	16th	14.7	+0.8	9.1	1st	1.6	21.4	v low	8%
Jarrahwood	29.5	+1.9	40.0	25th	12.5	+1.3	5.5	21st	0.4	16.4	v low	2%
Mandurah	29.9	+2.3	40.1	14th	18.5	+1.0	14.0	21st	0.6	13.4	v low	4%
Manjimup	27.4	+2.3	38.9	25th	12.5	+0.8	8.2	21st	3.2	24.6	v low	13%
Mount Barker	27.6	+3.3	38.0	15th	13.3	+1.9	11.5	8th	1.6	29.3	v low	6%
North Walpole	24.5	+1.7	37.3	25th	13.5	+0.6	8.7	21st	6.0	36.3	v low	16%
Rocky Gully	26.9	+1.2	37.9	25th	11.8	+0.7	4.3	21st	3.6	26.1	v low	14%
Shannon	25.6	+1.0	37.6	25th	12.3	+0.9	6.5	21st	4.2	28.3	v low	15%
Windy Harbour	23.6	+1.6	38.0	25th	13.1	+0.1	2.5	24th	3.6	26.1	lowest	14%
Witchcliffe West	26.1		39.8	25th	13.4		6.3	21st	0.6
North Central (district 10)
Bencubbin	35.0	+2.4	42.2	16th	16.9	+0.8	11.0	21st	3.6	13.0	average	28%
Cunderdin Airfield	34.8	+1.5	43.0	16th	14.9	-0.1	10.2	21st	18.8	7.7	high	244%
Goomalling	36.2	+3.8	42.5	16th	15.1	+0.1	11.3	22nd	6.6	10.3	average	64%
Kellerberrin	31.0	-1.3	31.0	21st	10.0	-5.1	10.0	1st	0.0	12.9	lowest	0%
Merredin	35.6	+3.3	41.4	16th	17.3	+1.4	14.1	5th	9.0	13.7	average	66%
Northam	34.2	+2.0	41.4	16th	15.5	+0.1	9.1	27th	12.4	9.0	high	138%
York	34.3	+1.6	42.1	25th	14.5	+0.4	7.3	27th	5.4	10.4	average	52%
South Central (district 10A)
Beverley	35.0	+2.5	41.6	25th	14.9	+0.5	9.8	21st	9.2	10.1	average	91%
Brookton	33.2	+1.9	40.5	16th	14.2	+0.6	6.8	27th	6.0	10.0	average	60%
Corrigin	33.4	+2.7	42.0	16th	16.8	+2.8	12.0	22nd	1.2	12.5	low	10%
Hyden	33.4	+1.3	41.0	2nd	13.6	-0.3	7.4	21st	0.0	14.0	lowest	0%
Jacup	28.1	+1.6	42.3	16th	11.4	-0.1	4.4	21st	1.2	25.3	v low	5%
Katanning	30.3	+1.5	40.9	16th	12.8	+1.0	7.0	21st	0.0	21.0	lowest	0%
Lake Grace	31.3	+1.5	41.8	16th	14.3	+0.7	8.5	21st	0.4	17.8	low	2%
Narrogin	31.4	+2.3	40.0	16th	14.1	+1.6	8.3	21st	0.6	13.7	low	4%
Newdegate Research Station	32.0	+2.1	42.2	16th	11.8	+0.1	5.9	6th	0.0	14.6	lowest	0%
Ongerup	30.6	+3.2	40.7	16th	12.0	-0.3	7.9	6th	5.6	17.5	average	32%
Pingelly	31.9	+1.6	40.1	16th	14.1	+0.2	8.4	21st	4.6	12.2	average	38%
Ravensthorpe	27.9	+0.6	42.4	16th	13.3	+0.5	8.5	28th	2.0	23.3	v low	9%
Wagin	30.8	+1.4	39.5	16th	13.9	+0.9	7.6	21st	0.0	13.0	lowest	0%
Wandering	32.0	+1.4	40.4	25th	12.5	+0.4	4.4	27th	7.2	14.8	average	49%
Eucla (district 11)
Eucla	27.3	+2.3	44.1	17th	16.4	+1.2	10.1	7th	1.6	18.5	low	9%
Eyre	27.9	+2.1	47.5	17th	15.0	+0.9	0.8	7th	11.0	20.6	average	53%
Forrest	32.4	+0.7	44.9	17th	15.0	0.0	9.2	7th	0.0	23.7	lowest	0%
Red Rocks Point	26.0	+1.2	45.7	17th	16.9	+0.4	9.4	7th	1.4	17.5	v low	8%
South East (district 12)
Bulga Downs	37.7	+1.2	43.3	11th	21.6	+1.2	15.6	21st	14.8	12.7	high	116%
Kalgoorlie-Boulder Airport	34.1	+2.0	42.5	16th	17.7	+1.0	10.2	21st	5.8	15.8	average	37%
Laverton Aero	36.1	+1.9	42.7	17th	20.9	+0.9	13.3	30th	22.0	26.8	average	82%
Leinster Aero	33.9	-2.0	41.7	26th	20.4	-1.0	14.9	30th	9.2	24.6	average	37%
Leonora Aero	36.5	+0.8	43.6	11th	21.6	+0.4	14.3	30th	7.0	14.6	average	48%
Munglinup West	28.8	+1.1	43.3	16th	12.8	+0.2	7.7	21st	0.0	22.0	lowest	0%
Norseman Aero	32.0	+0.5	42.2	16th	14.5	+0.4	7.8	21st	13.0	19.1	average	68%
Salmon Gums Res.Stn.	31.3	+2.1	42.5	16th	11.8	-0.4	4.9	28th	0.8	19.1	v low	4%
Southern Cross Airfield	34.5	+1.3	42.1	16th	17.0	+1.2	9.7	21st	4.0	14.3	average	28%
North East (district 13)
Carnegie	39.5	+1.7	45.0	10th	19.0	-3.3	19.0	1st	17.5	25.5	average	69%
Giles Meteorological Office	38.8	+2.8	42.5	18th	23.4	+1.4	16.4	1st	2.2	46.9	v low	5%
Telfer Aero	41.8	+1.3	45.6	9th	26.5	+0.8	20.9	12th	66.0	48.7	high	136%
Warburton Airfield	38.9	+2.0	43.5	27th	23.2	+1.5	18.4	31st	9.0	33.1	low	27%
Wiluna Aero	39.1		43.3	10th	23.9		17.6	30th	39.2
Note: From 2017, information about Christmas Island and the Cocos and Keeling Islands can be found in the climate summary for the Remote Islands and Antarctica

Extremes Maps Records Summaries Important notes the top

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