Average annual temperature is 20.0 °C
Absolute maximum temperature: 40.0 °C
Absolute minimum temperature: -4.0 °C
Number of sunny days: 173 days
Number of rainy days: 192 days
Look at detailed online map of Perth
* Weather data for Perth United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 24.2 | 28.3 | 28.2 | 30.3 | 31.7 | 37.7 | 37.7 | 40.0 | 36.2 | 31.9 | 27.4 | 25.1 |
| Average daytime temperature (°C) | 17.6 | 19.9 | 22.3 | 23.6 | 29.0 | 33.5 | 34.7 | 37.2 | 32.7 | 26.6 | 19.2 | 16.5 |
| Average temperature (°C) | 12.4 | 13.9 | 16.2 | 17.8 | 22.7 | 26.7 | 28.3 | 30.4 | 26.2 | 20.2 | 13.8 | 10.9 |
| Average night temperature (°C) | 8.6 | 9.8 | 11.7 | 13.5 | 17.8 | 21.7 | 23.5 | 24.9 | 21.0 | 15.1 | 9.8 | 6.7 |
| Absolute minimum temperature (°C) | -1.3 | -0.6 | -4.0 | 8.2 | 11.5 | 18.5 | 20.8 | 20.3 | 17.5 | 5.4 | 1.9 | 0.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.1 | 12.0 | 13.0 | 13.8 | 14.2 | 14.0 | 13.3 | 12.4 | 11.4 | 10.6 | 10.1 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 6.1 | 7.5 | 8.7 | 8.4 | 11.0 | 11.7 | 11.7 | 11.9 | 11.1 | 8.9 | 6.4 | 7.9 |
| Precipitation (mm) | 232 | 171 | 125 | 193 | 66 | 115 | 111 | 19 | 46 | 21 | 72 | 102 |
| Sunny days | 12 | 9 | 10 | 12 | 12 | 3 | 14 | 24 | 17 | 23 | 16 | 21 |
| Rainy days | 19 | 19 | 21 | 18 | 19 | 27 | 17 | 7 | 13 | 8 | 14 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Perth during the most sunny months:
The largest precipitation sum in Perth is at