Average annual temperature is 15.9 °C
Absolute maximum temperature: 39.0 °C
Absolute minimum temperature: -11.6 °C
Number of sunny days: 246 days
Number of rainy days: 116 days
Number of snow days: 3 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) | 16.1 | 21.3 | 28.0 | 33.5 | 31.4 | 37.2 | 37.3 | 39.0 | 37.4 | 32.3 | 23.4 | 18.5 |
| Average daytime temperature (°C) | 9.4 | 11.7 | 15.9 | 23.6 | 26.1 | 30.6 | 33.1 | 34.1 | 30.9 | 22.7 | 14.5 | 11.2 |
| Average temperature (°C) | 3.5 | 4.5 | 9.0 | 15.5 | 20.2 | 24.9 | 27.3 | 28.1 | 24.8 | 16.8 | 8.8 | 6.0 |
| Average night temperature (°C) | -0.6 | -0.8 | 3.6 | 9.2 | 15.0 | 19.7 | 22.3 | 22.6 | 19.5 | 12.0 | 3.9 | 2.2 |
| Absolute minimum temperature (°C) | -11.6 | -10.1 | -6.8 | 0.3 | 5.3 | 15.9 | 17.6 | 16.9 | 15.3 | -2.3 | -9.6 | -4.0 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 8.1 | 8.5 | 10.0 | 10.3 | 11.8 | 12.0 | 12.1 | 10.3 | 8.4 | 7.5 | 6.3 |
| Precipitation (mm) | 44 | 30 | 19 | 45 | 60 | 63 | 97 | 30 | 29 | 109 | 59 | 76 |
| Sunny days | 23 | 20 | 22 | 21 | 14 | 17 | 18 | 24 | 24 | 19 | 21 | 23 |
| Rainy days | 7 | 7 | 9 | 9 | 17 | 13 | 13 | 7 | 6 | 12 | 8 | 8 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Perth during the most sunny months:
The largest precipitation sum in Perth is at