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Portland Climate

Portland Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
21.9 22.5 21.1 18.5 15.9 13.7 13.1 14.0 15.3 16.8 18.7 20.1 17.6
Mean Min (°C)
12.2 12.7 11.7 9.8 8.4 6.9 6.3 6.7 7.5 8.3 9.8 10.9 9.2
Mean Rain (mm)
36.6 26.6 47.0 58.7 79.2 112.6 110.3 108.1 85.1 61.6 52.5 50.7 831.7
Median Rain (mm)
27.0 17.4 35.4 56.2 64.8 104.8 106.9 98.1 82.6 54.6 42.4 41.8 800.0
Mean Rain Days
10.8 8.8 13.5 18.1 21.1 23.0 24.1 23.6 20.7 18.8 14.6 13.3 208.2

Portland Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
42.1 43.1 40.5 34.2 26.8 20.6 18.7 24.4 31.0 32.4 35.5 40.9 43.1
Low Max (°C)
13.9 14.5 13.8 10.9 9.6 9.3 8.5 9.1 9.4 10.3 11.3 12.4 8.5
High Min (°C)
25.5 25.2 22.5 21.1 15.3 14.0 12.8 13.8 16.6 17.5 18.7 20.7 25.5
Low Min (°C)
1.6 4.1 2.5 1.2 0.0 -1.5 -2.3 -0.7 0.0 -0.9 1.5 0.9 -2.3
High Rain (mm)
72.0 45.4 77.2 50.0 59.4 71.2 36.8 61.0 37.0 55.0 68.6 61.0 77.2

Portland Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
24.2 26.3 24.7 21.2 17.2 14.9 14.1 15.7 17.3 18.5 22.3 22.5 18.6
Low Mn. Max (°C)
19.1 20.1 19.3 16.2 14.5 12.3 11.9 12.4 12.8 14.7 16.3 17.1 16.7
High Mn. Min (°C)
13.9 15.1 13.8 11.5 10.6 8.7 7.7 8.2 9.5 9.8 12.3 13.0 10.0
Low Mn. Min (°C)
10.2 10.5 10.4 8.5 6.9 4.5 4.6 5.7 6.4 6.2 8.6 8.5 8.3
High Rain (mm)
149.6 84.8 175.2 114.4 197.0 202.4 219.0 255.0 134.4 123.4 113.4 125.0 1157.2
Low Rain (mm)
3.8 1.6 4.6 11.0 23.6 52.4 55.6 26.2 37.2 19.8 16.2 13.8 583.6

Portland Annual Temperatures & Rainfall

PORTLAND (CASHMORE AIRPORT)

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Portland Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4
≥ 35°C
1.4 1.5 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.5 3.9
≥ 30°C
3.5 3.5 2.5 0.4 0.0 0.0 0.0 0.0 0.0 0.3 1.3 1.7 12.9
≤ 2°C
0.0 0.0 0.0 0.1 0.6 1.7 1.5 0.9 0.5 0.2 0.1 0.0 5.5
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.2 0.3 0.1 0.0 0.1 0.0 0.0 0.7

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
27.8 29.4 27.2 22.8 18.2 15.3 14.8 16.4 18.1 21.4 23.8 25.0 22.0
Low Max
17.5 17.9 16.8 14.9 13.6 11.9 11.3 11.7 12.4 13.3 14.6 16.1 12.9
High Min
15.0 15.4 14.5 12.6 11.1 9.6 8.9 9.1 10.0 11.0 12.6 13.8 13.0
Low Min
9.0 9.3 8.5 6.6 5.2 3.9 3.6 4.2 4.7 5.3 7.0 7.6 5.5

Portland Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
32 32 32 32 32 33 33 33 33 33 33 33 32.3
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014
Years of Maxima
32 32 32 32 32 33 33 33 33 33 33 33 32.4
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014
Years of Rainfall
32 32 32 32 32 33 33 33 33 33 33 33 32.5
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014 2014

Station Details

PORTLAND (CASHMORE AIRPORT)
South West, Victoria
38.3148°S 141.4705°E 81m AMSL
Commenced 1982
Display Your Local Weather

Weather News

Parts of NSW on track for coldest July in around 17 years

19:12 EST

For many across New South Wales, July has been a cold month and for the younger generation, many won't be able to remember a month so cold.

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15:22 EST

A neighbour alerted council to a large embankment wall being built at a quarry years before it was blamed by some locals for contributing to the deadly 2011 Grantham flood, an inquiry has been told.

Melbourne on target for coldest July in 17 years

14:23 EST

Melbourne is struggling through a July more typical of the mid 1900's.