Climate averages 1991–2020
Perth weather
in October.
A warm, fairly dry month: the 7th warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Perth: daytime highs average 22.0°C and nights cool to about 12.2°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 27 mm of rain on roughly 5 days, which makes October a fairly dry month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 51 min on an average October day.
The nearest other city in this atlas is Mandurah (65 km away). In October its highs average 20.9°C, 1.0°C cooler than Perth, with 29 mm of rain.
Among the 32 cities listed in Australia, Perth ranks 15th of 32 for the warmest October highs and 2nd of 32 for the driest October (rainfall, lowest first). The mean October high of those 32 cities is 22.2°C; Perth is 0.3°C cooler than that mean.
From October to November, average highs rise by 3.7°C to 25.7°C, and monthly rainfall falls from 27 mm to 19 mm.
The annual picture
October in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Perth climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 31.2°C18.8°C | 18.8°C | 17 | 1.8 | 14.014 h |
| February | 31.2°C19.2°C | 19.2°C | 16 | 1.5 | 13.213 h |
| March | 28.9°C17.8°C | 17.8°C | 17 | 2.3 | 12.312 h |
| April | 24.8°C15.3°C | 15.3°C | 24 | 4.1 | 11.311 h |
| May | 20.9°C12.4°C | 12.4°C | 67 | 7.8 | 10.511 h |
| June | 17.9°C10.5°C | 10.5°C | 98 | 10.7 | 10.110 h |
| July | 16.7°C9.5°C | 9.5°C | 102 | 12.5 | 10.310 h |
| August | 17.2°C9.6°C | 9.6°C | 89 | 11.0 | 11.011 h |
| September | 18.5°C10.4°C | 10.4°C | 55 | 8.5 | 11.912 h |
| October, selected | 22.0°C12.2°C | 12.2°C | 27 | 4.7 | 12.913 h |
| November | 25.7°C14.9°C | 14.9°C | 19 | 3.7 | 13.714 h |
| December | 29.0°C17.1°C | 17.1°C | 9.3 | 1.6 | 14.214 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
October in nearby cities
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Perth) is explained once on the Perth year overview and on the Sources, method and limits page.