WeatherWX.com
Perth Monthly Climate Averages
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi 30°F Lo 16°F | Hi 32°F Lo 17°F | Hi 41°F Lo 25°F | Hi 54°F Lo 35°F | Hi 68°F Lo 47°F | Hi 75°F Lo 55°F | Hi 82°F Lo 61°F | Hi 80°F Lo 60°F | Hi 73°F Lo 53°F | Hi 59°F Lo 43°F | Hi 46°F Lo 32°F | Hi 35°F Lo 24°F |
| 8 mph | 8 mph | 8 mph | 8 mph | 7 mph | 6 mph | 6 mph | 5 mph | 5 mph | 6 mph | 7 mph | 7 mph |
| 1 in | 1.1 in | 1.2 in | 1.5 in | 1.5 in | 1.9 in | 1.6 in | 1.7 in | 1.6 in | 1.8 in | 1.1 in | 1.4 in |
| 83% | 84% | 80% | 75% | 76% | 76% | 76% | 77% | 78% | 79% | 78% | 82% |
| 58% | 60% | 54% | 51% | 46% | 41% | 36% | 36% | 36% | 47% | 45% | 56% |
| 30.0 in | 30.0 in | 30.1 in | 30.0 in | 30.0 in | 29.9 in | 29.9 in | 30.0 in | 30.0 in | 30.0 in | 30.1 in | 30.1 in |
| 19 | 15 | 21 | 22 | 23 | 22 | 23 | 24 | 24 | 23 | 23 | 18 |
| 8 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 9 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 36 | 30 | 41 | 44 | 59 | 63 | 75 | 76 | 70 | 53 | 56 | 39 |
January |
February |
March |
April |
May |
June |
July |
August |
September |
October |
November |
December |
| Hi -1°C Lo -9°C | Hi 0°C Lo -8°C | Hi 5°C Lo -4°C | Hi 12°C Lo 2°C | Hi 20°C Lo 8°C | Hi 24°C Lo 13°C | Hi 28°C Lo 16°C | Hi 27°C Lo 16°C | Hi 23°C Lo 12°C | Hi 15°C Lo 6°C | Hi 8°C Lo -0°C | Hi 2°C Lo -4°C |
| 12 km/h | 13 km/h | 13 km/h | 13 km/h | 10 km/h | 10 km/h | 9 km/h | 8 km/h | 9 km/h | 10 km/h | 11 km/h | 12 km/h |
| 25 mm | 28 mm | 31 mm | 38 mm | 39 mm | 49 mm | 42 mm | 44 mm | 42 mm | 45 mm | 28 mm | 35 mm |
| 83% | 84% | 80% | 75% | 76% | 76% | 76% | 77% | 78% | 79% | 78% | 82% |
| 58% | 60% | 54% | 51% | 46% | 41% | 36% | 36% | 36% | 47% | 45% | 56% |
| 1017 mb | 1017 mb | 1018 mb | 1015 mb | 1016 mb | 1013 mb | 1014 mb | 1015 mb | 1018 mb | 1017 mb | 1019 mb | 1018 mb |
| 19 | 15 | 21 | 22 | 23 | 22 | 23 | 24 | 24 | 23 | 23 | 18 |
| 8 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 9 |
| 4 | 5 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 1 | 1 | 2 | 3 | 4 | 5 | 5 | 5 | 3 | 2 | 1 | 1 |
| 36 | 30 | 41 | 44 | 59 | 63 | 75 | 76 | 70 | 53 | 56 | 39 |
| Month |
| Avg. Temperatures |
| Avg. Wind Speed |
| Avg. Precipitation |
| Average Humidity |
| Avg. Cloud Cover |
| Pressure Average |
| Average Dry Days |
| Avg. Precip. Days |
| Avg. Snow Days |
| Average Fog Days |
| Average UV Index |
| Avg. Hours of Sun |
Averages are based on historical weather data from the past 10 years.