Mortlake Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
26.0 26.3 24.0 20.0 16.2 13.5 13.0 13.9 15.8 18.1 20.8 23.6 19.3
Mean Min (°C)
10.9 11.5 9.9 7.9 6.6 5.1 4.6 4.8 5.7 6.4 7.8 9.3 7.5
Mean Rain (mm)
37.2 33.7 33.7 47.5 53.7 54.7 66.5 67.8 59.1 53.6 48.9 43.8 600.5
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
8.2 7.3 10.6 14.3 17.6 18.1 20.0 19.0 18.8 16.6 12.5 11.1 166.9

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 27.9 35.8 38.3 43.4 46.0
Low Max (°C)
14.1 13.8 13.9 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 -2.9 -3.9 -1.4 -0.6 -13.2
High Rain (mm)
59.8 49.0 30.8 36.6 37.0 24.4 52.2 42.6 33.6 28.0 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)
28.5 30.9 28.2 23.4 18.2 15.2 13.9 15.6 17.5 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)
13.3 14.4 12.4 10.6 9.7 7.0 5.8 6.7 7.6 8.4 11.0 10.6 8.3
Low Mn. Min (°C)
7.5 6.9 7.2 6.0 5.2 2.5 2.5 2.9 4.3 3.8 5.4 6.4 6.8
High Rain (mm)
134.4 87.0 63.2 117.2 122.8 100.8 128.0 167.0 119.8 96.0 96.4 129.0 830.8
Low Rain (mm)
1.6 0.8 9.2 11.6 7.2 22.0 22.8 23.4 23.6 12.8 19.6 5.6 386.6

Mortlake Annual Temperatures & Rainfall

Mortlake annual climate

Mortlake Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.9 0.5 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.6
≥ 35°C
3.8 3.1 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.6 9.9
≥ 30°C
7.4 8.1 5.5 0.8 0.0 0.0 0.0 0.0 0.0 0.6 2.3 5.0 28.6
≤ 2°C
0.1 0.0 0.4 2.2 3.1 5.8 6.1 5.1 3.9 4.0 1.7 0.6 31.8
≤ 0°C
0.0 0.0 0.0 0.6 0.7 2.0 1.7 1.6 0.9 0.9 0.3 0.0 8.4

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
26 27 26 26 27 25 26 26 26 27 27 26 26.3
Earliest Entry
1991 1991 1991 1991 1991 1991 1990 1990 1990 1990 1990 1990 1990
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Maxima
26 27 26 26 26 25 27 26 26 26 27 27 26.3
Earliest Entry
1991 1991 1991 1991 1991 1991 1990 1990 1990 1990 1990 1990 1990
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Rainfall
22 22 22 22 22 22 22 22 22 22 22 22 22.1
Earliest Entry
1995 1995 1995 1995 1995 1994 1994 1994 1994 1994 1994 1994 1994
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017

Station Details

MORTLAKE RACECOURSE
South West, Victoria
38.0737°S 142.7744°E 130m AMSL
Commenced 1990

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A wet end for the northern dry season

13:18 AEST The Top End is experiencing the wettest September month in decades with total rainfall in some places more than five times the long term average.

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