October is one of the warmer months of the year in Perth, with average highs near 11.2°C and lows around 5.9°C (mean 8.6°C). It is a relatively wet time of year, averaging 110 mm of rainfall and 91% relative humidity across the period.
October is one of the warmer months of the year in Perth. Across 45 years of records, the warmest October in Perth was 2001 — when the month averaged 10.8°C — while the coldest was 1981 at 5.3°C. Typical October days reach 11.2°C with nights near 5.9°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Perth, averaging 110 mm of rainfall. The wettest October on record was 2023 with 191 mm, while the driest was 2003 at 30 mm.
Relative humidity in Perth during October averages 91%. The most humid October was 2000 at 93%, and the least humid was 2003 at 89%.
October receives about 1.4 kWh/m²/day of solar energy in Perth. The sunniest Octobers were 1997 and 2003 at 1.7 kWh/m²/day, and the cloudiest were 1988 and 2000 at 1.
Average wind speed in Perth during October is 3.8 m/s. The windiest October was 1983 at 5.3 m/s, while the calmest were 2012 and 2015 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.0°C | 8.1°C | 8.9°C | 8.7°C | 9.4°C | +1.4°C |
| Avg High | 10.7°C | 10.8°C | 11.5°C | 11.4°C | 12.0°C | +1.3°C |
| Avg Low | 5.4°C | 5.5°C | 6.3°C | 6.0°C | 6.8°C | +1.4°C |
| Avg Rain | 105 mm | 103 mm | 120 mm | 94 mm | 137 mm | +31 mm |
October temperatures in Perth have risen by about 1.8°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -1.6°C (1981) to a record high of 18.8°C (1985).
Rainfall in October is a relatively wet time of year, averaging 110 mm, with a wettest year of 191 mm.
A good time to visit Perth
October is a good time to visit Perth, with days averaging 11.2°C and nights around 5.9°C (mean 8.6°C, close to Perth's yearly average) and higher rainfall. July and August are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 12.5°C | 10.0°C | 7.4°C | 17.2°C | 2.5°C | 102 mm | 90% | 3.9 m/s | 1.4 |
| 2024 | 12.2°C | 9.5°C | 6.8°C | 14.8°C | 1.4°C | 95 mm | 92% | 3.6 m/s | 1.4 |
| 2023 🌧️ | 11.5°C | 8.8°C | 6.2°C | 17.7°C | 1.0°C | 191 mm | 91% | 4.5 m/s | 1.4 |
| 2022 | 12.7°C | 10.2°C | 7.6°C | 15.2°C | 3.7°C | 114 mm | 92% | 4 m/s | 1.5 |
| 2021 | 12.1°C | 9.6°C | 7.0°C | 17.3°C | 1.8°C | 148 mm | 92% | 3.6 m/s | 1.3 |
| 2020 | 11.1°C | 8.4°C | 5.7°C | 13.7°C | 3.4°C | 171 mm | 92% | 3.4 m/s | 1.3 |
| 2019 | 10.5°C | 7.8°C | 5.1°C | 13.3°C | 0.4°C | 85 mm | 91% | 3.8 m/s | 1.5 |
| 2018 | 11.2°C | 8.1°C | 5.0°C | 15.9°C | 0.2°C | 76 mm | 90% | 4.1 m/s | 1.4 |
| 2017 | 12.5°C | 9.7°C | 6.9°C | 16.2°C | 0.8°C | 86 mm | 91% | 4.4 m/s | 1.3 |
| 2016 | 11.4°C | 8.8°C | 6.3°C | 14.2°C | 3.0°C | 59 mm | 91% | 3 m/s | 1.5 |
| 2015 | 12.1°C | 9.2°C | 6.4°C | 16.9°C | 3.8°C | 75 mm | 92% | 2.8 m/s | 1.5 |
| 2014 | 12.0°C | 9.2°C | 6.5°C | 15.8°C | 2.6°C | 141 mm | 91% | 4.3 m/s | 1.3 |
| 2013 | 12.1°C | 9.8°C | 7.4°C | 16.3°C | 2.1°C | 126 mm | 91% | 4 m/s | 1.2 |
| 2012 | 9.1°C | 6.4°C | 3.6°C | 11.8°C | -0.7°C | 112 mm | 93% | 2.8 m/s | 1.5 |
| 2011 | 11.6°C | 9.5°C | 7.3°C | 16.1°C | 1.1°C | 96 mm | 92% | 4.4 m/s | 1.2 |
| 2010 | 11.0°C | 8.2°C | 5.5°C | 14.4°C | -0.1°C | 88 mm | 92% | 3.7 m/s | 1.4 |
| 2009 | 11.8°C | 9.2°C | 6.5°C | 16.1°C | 3.3°C | 115 mm | 92% | 3.4 m/s | 1.4 |
| 2008 | 10.3°C | 7.4°C | 4.6°C | 16.5°C | 0.5°C | 92 mm | 91% | 4.7 m/s | 1.5 |
| 2007 | 12.7°C | 9.7°C | 6.8°C | 16.6°C | 2.0°C | 48 mm | 92% | 2.9 m/s | 1.6 |
| 2006 | 13.1°C | 10.6°C | 8.0°C | 15.1°C | 3.5°C | 127 mm | 92% | 3.3 m/s | 1.3 |
| 2005 | 12.4°C | 10.0°C | 7.6°C | 15.8°C | 2.3°C | 168 mm | 92% | 3.8 m/s | 1.1 |
| 2004 | 10.7°C | 8.3°C | 5.9°C | 12.7°C | 2.4°C | 155 mm | 92% | 3.6 m/s | 1.3 |
| 2003 | 10.3°C | 7.5°C | 4.8°C | 14.5°C | 1.0°C | 30 mm | 89% | 3.4 m/s | 1.7 |
| 2002 | 9.5°C | 7.3°C | 5.1°C | 17.3°C | -0.8°C | 188 mm | 92% | 3.7 m/s | 1.3 |
| 2001 🔥 | 12.9°C | 10.8°C | 8.6°C | 16.5°C | 4.0°C | 142 mm | 93% | 4.4 m/s | 1.2 |
| 2000 | 10.8°C | 8.1°C | 5.4°C | 16.5°C | 2.8°C | 137 mm | 93% | 4.1 m/s | 1 |
| 1999 | 11.3°C | 8.8°C | 6.3°C | 14.3°C | 0.5°C | 59 mm | 90% | 4.1 m/s | 1.3 |
| 1998 | 9.8°C | 7.3°C | 4.8°C | 14.1°C | -1.3°C | 142 mm | 90% | 4.6 m/s | 1.5 |
| 1997 | 11.0°C | 8.1°C | 5.2°C | 16.5°C | -0.9°C | 65 mm | 91% | 3.1 m/s | 1.7 |
| 1996 | 12.0°C | 9.3°C | 6.6°C | 14.9°C | 2.4°C | 152 mm | 91% | 4.2 m/s | 1.5 |
| 1995 | 13.1°C | 10.5°C | 7.8°C | 17.0°C | 3.7°C | 128 mm | 91% | 4.4 m/s | 1.5 |
| 1994 | 10.7°C | 7.9°C | 5.1°C | 15.5°C | -0.2°C | 82 mm | 91% | 3.3 m/s | 1.3 |
| 1993 | 9.2°C | 6.4°C | 3.6°C | 12.7°C | -1.6°C | 93 mm | 91% | 3 m/s | 1.4 |
| 1992 | 8.7°C | 5.7°C | 2.6°C | 14.7°C | -0.9°C | 54 mm | 92% | 3.1 m/s | 1.5 |
| 1991 | 10.7°C | 8.3°C | 5.9°C | 14.0°C | 2.3°C | 98 mm | 90% | 4.1 m/s | 1.3 |
| 1990 | 11.0°C | 9.0°C | 7.0°C | 15.2°C | 1.2°C | 154 mm | 92% | 4.3 m/s | 1.2 |
| 1989 | 12.1°C | 9.3°C | 6.4°C | 15.2°C | 3.6°C | 87 mm | 90% | 3.8 m/s | 1.4 |
| 1988 | 10.4°C | 8.2°C | 6.1°C | 14.0°C | -1.2°C | 153 mm | 93% | 3.9 m/s | 1 |
| 1987 | 9.7°C | 7.3°C | 4.9°C | 13.1°C | 1.2°C | 125 mm | 92% | 3.2 m/s | 1.2 |
| 1986 | 11.1°C | 8.4°C | 5.6°C | 15.3°C | 2.2°C | 61 mm | 91% | 4.4 m/s | 1.4 |
| 1985 | 11.8°C | 9.1°C | 6.4°C | 18.8°C | 1.1°C | 40 mm | 92% | 3.2 m/s | 1.5 |
| 1984 | 11.4°C | 8.6°C | 5.7°C | 15.8°C | 3.4°C | 110 mm | 90% | 4.1 m/s | 1.2 |
| 1983 | 10.6°C | 7.8°C | 5.1°C | 16.2°C | -1.3°C | 95 mm | 89% | 5.3 m/s | — |
| 1982 | 10.8°C | 8.3°C | 5.8°C | 14.1°C | 1.0°C | 155 mm | 92% | 4.4 m/s | — |
| 1981 ❄️ | 8.0°C | 5.3°C | 2.7°C | 11.5°C | -1.6°C | 121 mm | 91% | 4.2 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 11.2°C with lows near 5.9°C (mean 8.6°C), based on 45 years of NASA POWER data.
October averages 110 mm of rainfall in Perth, a relatively wet time of year. The wettest on record was 191 mm in 2023.
The hottest October reached 18.8°C in 1985. The coldest dipped to -1.6°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.8°C. Daytime highs moved from 10.5°C to 12.2°C and overnight lows from 5.1°C to 7°C over the same span.
October is one of the warmer months of the year in Perth and a relatively wet time of year, so plan for around 11.2°C daytime highs and 5.9°C at night.
Not quite — October is the 7th coolest month in Perth, averaging 8.6°C.
For October in Perth, pack warm layers and a jacket for chilly mornings, with typical highs of 11.2°C and lows of 5.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 91% — quite humid.
Average wind speed in October is 3.8 m/s. The windiest October on record averaged 5.3 m/s (1983).
The wettest October on record was 2023 with 191 mm. On average, October sees 110 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Perth behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
