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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
≥ 40.0°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
≥ 35.0°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
≥ 30.0°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
≤ 2.0°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
≤ 0.0°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

Cyclone Debbie strengthens to cat 2 on way to probable cat 4 as it continues towards Queensland coast

01:31 EDT

A cyclone off northern Queensland has intensified to a category two and could reach category four by the time it crosses the coast somewhere between Cardwell and Bowen, near Townsville, the Bureau of Meteorology (BOM) has warned.

Cyclone Debbie: How the BOM names cyclones

20:42 EDT

The Bureau of Meteorology has off the coast of Queensland.

Queensland braces for Tropical Cyclone Debbie

12:37 EDT

Tropical Cyclone Debbie is strengthening quickly on its journey to make landfall, likely between Lucinda and Proserpine on Monday or Tuesday.