Perth weather in October
In October, Perth has an average high of 20 °C68 °F and an average low of 14 °C58 °F, with about 32 mm1.3 in of precipitation. It is the 8th warmest month of the year and ranks 7th for precipitation.
How October compares with other months
Compared with September, October is 1.4 °C2.6 °F warmer on average and drier by 37 mm1.5 in. Compared with November, October is 2.1 °C3.7 °F cooler on average and wetter by 8 mm0.3 in. Daylight lasts about 12.9 hours around the middle of the month. Average relative humidity is 73% and the average cloud amount 45%.
Is October a good time to visit Perth?
Yes — October is one of the most comfortable months to visit Perth by our comfort score, which favours average highs of 21–28 °C, lows above 5 °C, little rain and moderate humidity.
What to wear in October
For Perth in October, pack light layers — T-shirts plus a light sweater or jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Perth | 2068 | 1458 | 321.3 |
| Mandurah | 2067 | 1457 | 381.5 |
| Augusta | 1762 | 1458 | 441.7 |
| Roebourne | 38100 | 2170 | 20.1 |
| Marble Bar | 40103 | 2271 | 40.2 |
Nearby places that are more than 1 °C1.8 °F warmer in October: Roebourne and Marble Bar; cooler: Augusta.
Other months in Perth
- January26 °C79 °F / 19 °C66 °F
- February27 °C80 °F / 20 °C68 °F
- March26 °C78 °F / 19 °C66 °F
- April23 °C73 °F / 17 °C63 °F
- May21 °C69 °F / 16 °C60 °F
- June19 °C66 °F / 14 °C58 °F
- July18 °C64 °F / 14 °C56 °F
- August18 °C64 °F / 13 °C56 °F
- September18 °C64 °F / 13 °C56 °F
- October20 °C68 °F / 14 °C58 °F
- November22 °C72 °F / 16 °C61 °F
- December24 °C76 °F / 18 °C64 °F
Frequently asked questions
How warm is Perth in October?
In October the average high in Perth is 20 °C (68 °F) and the average low is 14 °C (58 °F).
Does it rain a lot in Perth in October?
On average about 32 mm (1.3 in) of precipitation falls in October; it ranks 7th of the 12 months.
Is October the warmest month in Perth?
No. The warmest month in Perth is February, with an average high of 27 °C (80 °F). The coldest month is September, with an average low of 13 °C (56 °F).
How long is the day in Perth in October?
In the middle of October the day in Perth lasts about 12.9 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Perth in October?
The average relative humidity in October is about 73%. This is a long-term average for the whole day.
How cloudy is Perth in October?
On average about 45% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.