Average annual temperature is 12.4 °C
Absolute maximum temperature: 31.3 °C
Absolute minimum temperature: -1.8 °C
Number of sunny days: 184 days
Number of rainy days: 181 days
Look at detailed online map of Portland
* Weather data for Portland Australia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 29.0 | 29.0 | 31.3 | 18.8 | 16.3 | 16.1 | 15.3 | 17.5 | 24.4 | 25.3 | 27.4 | 31.1 |
| Average daytime temperature (°C) | 23.4 | 23.5 | 22.1 | 16.0 | 11.9 | 10.1 | 11.3 | 13.4 | 17.7 | 18.6 | 21.5 | 24.4 |
| Average temperature (°C) | 17.3 | 17.6 | 16.7 | 11.3 | 7.3 | 6.2 | 6.8 | 7.8 | 11.5 | 12.5 | 15.6 | 18.4 |
| Average night temperature (°C) | 12.5 | 12.7 | 12.5 | 8.0 | 4.0 | 3.5 | 3.0 | 3.5 | 5.9 | 7.2 | 10.8 | 13.1 |
| Absolute minimum temperature (°C) | 7.9 | 6.8 | 6.7 | 4.1 | -0.5 | -1.8 | -1.7 | -0.2 | -1.3 | 3.4 | 6.4 | 7.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.1 | 13.3 | 12.3 | 11.3 | 10.4 | 10.0 | 10.2 | 10.9 | 11.9 | 12.9 | 13.8 | 14.3 |
| Daylight minimum duration (h) | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 11.0 | 11.1 | 9.7 | 8.6 | 8.4 | 7.0 | 7.5 | 9.0 | 10.8 | 11.2 | 10.1 | 11.6 |
| Precipitation (mm) | 82 | 50 | 78 | 64 | 10 | 27 | 14 | 33 | 9 | 36 | 93 | 67 |
| Sunny days | 8 | 12 | 14 | 11 | 19 | 17 | 18 | 18 | 24 | 21 | 8 | 14 |
| Rainy days | 23 | 16 | 17 | 19 | 12 | 13 | 13 | 13 | 6 | 10 | 22 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Portland is at