Portland Climate

Portland Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
22.0 22.5 21.1 18.5 15.9 13.7 13.1 14.0 15.2 16.9 18.7 20.3 17.6
Mean Min (°C)
12.3 12.8 11.8 9.9 8.4 7.0 6.3 6.7 7.5 8.3 9.9 10.9 9.3
Mean Rain (mm)
37.2 27.9 47.4 59.6 82.2 111.6 111.9 106.9 86.7 61.6 52.3 50.1 835.3
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
10.9 8.9 13.7 18.1 21.4 23.0 24.4 23.6 20.7 18.6 14.7 13.3 205.4

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 32.8 35.5 40.9 43.1
Low Max (°C)
13.9 14.5 13.6 10.9 9.6 9.2 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 50.0 77.2 50.0 59.4 71.2 36.8 61.0 46.0 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 20.6 22.3 24.1 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 14.2 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 84.8 175.2 114.4 197.0 202.4 219.0 255.0 161.2 123.4 113.4 125.0 1157.2
Low Rain (mm)
3.8 1.6 4.6 11.0 23.6 52.4 55.6 26.2 37.2 7.0 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 1.4 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.6 3.9
≥ 30.0°C
3.4 3.5 2.5 0.3 0.0 0.0 0.0 0.0 0.0 0.4 1.3 1.8 12.9
≤ 2.0°C
0.0 0.0 0.0 0.1 0.6 1.6 1.5 0.9 0.5 0.1 0.1 0.0 5.3
≤ 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 0.6

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
35 35 35 35 35 35 35 35 35 35 35 35 34.7
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Maxima
35 35 35 35 35 35 35 35 35 35 35 35 34.8
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017
Years of Rainfall
35 35 35 35 35 35 35 35 35 35 35 35 34.9
Earliest Entry
1983 1983 1983 1983 1983 1982 1982 1982 1982 1982 1982 1982 1982
Latest Entry
2017 2017 2017 2017 2017 2016 2016 2016 2016 2016 2016 2016 2017

Station Details

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

Weather News

A wet week on the way for much of eastern NSW

13:57 EST

A trough and possible cut-off low will bring welcome rain for much of eastern NSW next week.

Wintery morning for Southwest WA

12:51 EST

Southwestern WA had a reminder this morning that we aren't quite out of winter just yet.  A cold airmass now sits over the region thanks to a frontal system moving across the south.

Tradie Justin Lampe turns his hand to metal art sculptures

08:09 EST

After Justin Lampe's fencing business folded more than a year ago, the self-taught artist turned to metal art to make a living and looked to his family for inspiration.