Mortlake Long-term Averages

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Mean Max (°C)	26.3	26.2	24.0	20.0	16.2	13.6	13.0	13.9	15.9	18.2	20.9	23.6	19.3
Mean Min (°C)	11.2	11.4	10.0	8.1	6.6	5.0	4.6	4.8	5.7	6.5	8.1	9.3	7.6
Mean Rain (mm)	37.4	30.9	32.5	43.0	58.5	56.8	61.7	65.9	57.7	55.6	49.0	40.6	589.9
Median Rain (mm)	23.2	29.1	31.3	43.0	37.7	46.8	50.4	63.8	53.4	39.3	48.1	36.8	565.8
Mean Rain Days	7.8	7.3	10.7	14.2	17.9	18.6	20.2	19.3	18.5	16.9	12.7	11.2	175.8

Mortlake Daily Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max (°C)	44.9	46.0	41.5	36.9	27.9	23.2	19.1	23.4	28.4	35.8	38.3	44.0	46.0
Low Max (°C)	14.1	13.8	13.4	11.2	6.7	8.6	7.1	6.7	7.9	9.7	11.2	12.3	6.7
High Min (°C)	27.5	23.8	22.4	21.3	15.6	14.3	12.3	13.3	14.5	17.5	19.8	21.1	27.5
Low Min (°C)	1.1	2.0	-1.3	-2.5	-2.9	-5.0	-5.3	-13.2	-3.0	-3.9	-1.4	-0.6	-13.2
High Rain (mm)	59.8	49.0	30.8	36.6	47.4	24.6	52.2	42.6	33.6	50.0	39.4	67.0	67.0

Mortlake Monthly Records

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Mn. Max (°C)	30.1	30.9	28.2	23.4	18.3	15.2	13.9	15.6	18.1	23.8	25.6	28.8	20.6
Low Mn. Max (°C)	21.6	22.8	21.3	16.5	14.1	11.9	11.6	12.3	13.0	15.0	18.0	19.0	17.9
High Mn. Min (°C)	14.6	14.4	12.4	10.6	9.7	7.0	6.2	6.6	7.6	8.5	11.1	11.6	8.4
Low Mn. Min (°C)	7.5	6.8	7.2	6.0	5.2	2.5	2.2	2.9	4.3	3.8	5.4	6.4	6.8
High Rain (mm)	134.4	87.0	63.2	117.2	132.0	100.8	128.0	167.0	119.8	146.8	96.4	129.0	830.8
Low Rain (mm)	1.6	0.8	9.2	11.6	7.2	12.0	22.8	23.4	23.4	12.8	19.6	5.6	386.6

Mortlake Annual Temperatures & Rainfall

Mortlake Average Number of Days With Temperatures

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
≥ 40°C	0.8	0.4	0.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.2	1.8
≥ 35°C	4.0	3.0	1.2	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.3	1.6	10.2
≥ 30°C	7.9	7.9	5.4	0.9	0.0	0.0	0.0	0.0	0.0	0.6	2.4	5.0	30.1
≤ 2°C	0.1	0.0	0.4	1.9	3.1	6.0	6.2	5.5	4.2	3.7	1.6	0.5	33.6
≤ 0°C	0.0	0.0	0.0	0.5	0.9	2.3	2.0	1.7	0.8	0.8	0.3	0.0	9.5

Mortlake 'per Week' Values (14th/86th Percentiles)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
High Max	33.5	33.9	30.6	25.4	19.3	15.5	14.8	16.3	18.7	22.9	27.1	30.4	26.2
Low Max	19.3	19.3	18.0	15.0	13.4	11.4	11.1	11.4	12.5	13.6	15.2	17.4	12.9
High Min	15.5	15.9	13.7	11.8	10.4	8.5	7.5	8.1	9.1	10.0	12.0	13.4	12.1
Low Min	5.6	6.7	5.2	3.5	2.6	1.2	1.3	1.6	2.0	2.0	3.4	4.6	2.9

Mortlake Data Availability

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Ann
Years of Minima	33	34	32	32	32	31	34	33	33	34	34	33	33.0
Earliest Entry	1991	1991	1991	1991	1991	1991	1990	1990	1990	1990	1990	1990	1990
Latest Entry	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2023	2024
Years of Maxima	33	34	32	33	33	32	34	34	34	34	34	34	33.0
Earliest Entry	1991	1991	1991	1991	1991	1991	1990	1990	1990	1990	1990	1990	1990
Latest Entry	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2023	2024
Years of Rainfall	28	29	28	28	28	29	29	29	29	29	29	29	28.0
Earliest Entry	1995	1995	1995	1995	1995	1994	1994	1994	1994	1994	1994	1994	1994
Latest Entry	2024	2024	2024	2023	2023	2023	2023	2023	2023	2023	2023	2023	2024

Station Details

MORTLAKE RACECOURSE
South West, Victoria

38.0737°S 142.7744°E 130m AMSL
Commenced 1990

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15:03 AEST The Bureau of Meteorology has officially declared El Niño over and the El Niño Southern Oscillation (ENSO) is now inactive for the first time since 2021, meaning there is no immediate sign of either an El Niño or a La Niña event.