Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: 3.8 °C
Number of sunny days: 81 days
Number of rainy days: 284 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) | 33.2 | 35.3 | 23.1 | 24.2 | 18.2 | 17.9 | 16.6 | 20.1 | 27.6 | 27.9 | 23.5 | 29.5 |
| Average daytime temperature (°C) | 20.5 | 20.1 | 17.6 | 17.0 | 14.5 | 13.4 | 13.4 | 13.9 | 16.3 | 16.1 | 16.4 | 18.9 |
| Average temperature (°C) | 17.3 | 17.3 | 15.4 | 14.7 | 12.7 | 11.5 | 11.4 | 11.4 | 13.2 | 12.8 | 14.1 | 15.7 |
| Average night temperature (°C) | 14.9 | 15.1 | 13.7 | 12.6 | 11.0 | 9.8 | 9.6 | 9.2 | 10.5 | 10.1 | 12.3 | 13.6 |
| Absolute minimum temperature (°C) | 11.4 | 10.1 | 11.4 | 7.4 | 6.8 | 4.0 | 4.9 | 3.8 | 5.7 | 5.8 | 9.3 | 10.9 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 |
| Daylight mean duration (h) | 14.5 | 13.5 | 12.3 | 11.1 | 10.1 | 9.5 | 9.8 | 10.7 | 11.8 | 13.1 | 14.2 | 14.8 |
| Daylight minimum duration (h) | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 |
| Sunshine mean duration (h) | 10.6 | 9.5 | 7.4 | 6.6 | 5.6 | 5.3 | 5.8 | 6.8 | 9.0 | 9.0 | 8.7 | 9.1 |
| Precipitation (mm) | 30 | 64 | 74 | 85 | 95 | 124 | 82 | 42 | 39 | 62 | 42 | 107 |
| Sunny days | 10 | 10 | 5 | 3 | 6 | 5 | 6 | 6 | 12 | 6 | 4 | 8 |
| Rainy days | 21 | 18 | 26 | 27 | 25 | 25 | 25 | 25 | 18 | 25 | 26 | 23 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Portland during the most sunny months:
The largest precipitation sum in Portland is at