October is one of the cooler months of the year in Mount Barker, with average highs near 19.8°C and lows around 7.9°C (mean 13.9°C). It is about average for rainfall, averaging 48 mm of rainfall and 76% relative humidity across the period.
October is one of the cooler months of the year in Mount Barker. Across 45 years of records, the warmest October in Mount Barker was 2015 — when the month averaged 16.9°C — while the coldest were 1986 and 2005 at 11.8°C. Typical October days reach 19.8°C with nights near 7.9°C. The long-term trend is warming, about 0.3°C per decade.
October is about average for rainfall in Mount Barker, averaging 48 mm of rainfall. The wettest October on record was 2007 with 93 mm, while the driest was 2000 at 16 mm.
Relative humidity in Mount Barker during October averages 76%. The most humid October was 1992 at 83%, and the least humid was 2010 at 67%.
October receives about 5.5 kWh/m²/day of solar energy in Mount Barker. The sunniest Octobers were 2012, 2023 and 2024, among others at 6 kWh/m²/day, and the cloudiest were 2008 and 2009 at 4.9.
Average wind speed in Mount Barker during October is 3.2 m/s. The windiest October was 1988 at 3.9 m/s, while the calmest was 1983 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.4°C | 13.2°C | 13.7°C | 14.6°C | 14.3°C | +0.9°C |
| Avg High | 19.5°C | 18.9°C | 19.5°C | 20.7°C | 20.2°C | +0.7°C |
| Avg Low | 7.3°C | 7.5°C | 8.0°C | 8.5°C | 8.3°C | +1°C |
| Avg Rain | 41 mm | 50 mm | 48 mm | 54 mm | 42 mm | +1 mm |
October temperatures in Mount Barker have risen by about 0.3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 1.2°C (2021) to a record high of 33.7°C (2015).
Rainfall in October is about average for rainfall, averaging 48 mm, with a wettest year of 93 mm.
A good time to visit Mount Barker
October is a good time to visit Mount Barker, with days averaging 19.8°C and nights around 7.9°C (mean 13.9°C, cooler than Mount Barker's yearly average) and moderate rainfall. February and January 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 | 19.8°C | 14.0°C | 8.1°C | 28.0°C | 5.2°C | 36 mm | 78% | 3 m/s | 5.7 |
| 2024 | 22.1°C | 15.7°C | 9.4°C | 32.1°C | 4.7°C | 32 mm | 74% | 3.2 m/s | 6 |
| 2023 | 22.3°C | 15.8°C | 9.2°C | 33.2°C | 5.3°C | 16 mm | 69% | 3.2 m/s | 6 |
| 2022 | 18.1°C | 12.9°C | 7.6°C | 28.0°C | 3.7°C | 73 mm | 75% | 3.2 m/s | 5.1 |
| 2021 | 17.9°C | 12.4°C | 6.9°C | 26.3°C | 1.2°C | 68 mm | 79% | 3.2 m/s | 5.5 |
| 2020 | 21.1°C | 14.7°C | 8.3°C | 32.0°C | 4.0°C | 28 mm | 73% | 3 m/s | 5.9 |
| 2019 | 21.6°C | 15.2°C | 8.8°C | 31.9°C | 5.1°C | 47 mm | 73% | 3.1 m/s | 5.7 |
| 2018 | 20.0°C | 14.6°C | 9.1°C | 28.8°C | 6.0°C | 49 mm | 78% | 3.1 m/s | 5.4 |
| 2017 | 19.5°C | 13.8°C | 8.0°C | 27.4°C | 3.0°C | 43 mm | 77% | 3.6 m/s | 5.9 |
| 2016 | 17.4°C | 11.9°C | 6.5°C | 25.0°C | 3.3°C | 52 mm | 79% | 3.5 m/s | 5.6 |
| 2015 🔥 | 23.9°C | 16.9°C | 10.0°C | 33.7°C | 4.9°C | 46 mm | 72% | 3.3 m/s | 5.9 |
| 2014 | 21.4°C | 15.2°C | 9.1°C | 29.4°C | 3.1°C | 91 mm | 77% | 3.1 m/s | 5.7 |
| 2013 | 19.8°C | 14.0°C | 8.2°C | 31.8°C | 3.8°C | 52 mm | 80% | 3.3 m/s | 5.9 |
| 2012 | 21.8°C | 15.2°C | 8.5°C | 31.3°C | 4.0°C | 28 mm | 70% | 3.4 m/s | 6 |
| 2011 | 19.9°C | 14.4°C | 8.9°C | 28.5°C | 3.4°C | 91 mm | 80% | 3 m/s | 5.3 |
| 2010 | 21.9°C | 14.8°C | 7.6°C | 30.0°C | 4.4°C | 39 mm | 67% | 3 m/s | 6 |
| 2009 | 20.0°C | 14.4°C | 8.8°C | 29.3°C | 5.6°C | 29 mm | 79% | 3.2 m/s | 4.9 |
| 2008 | 19.7°C | 14.3°C | 8.9°C | 29.5°C | 4.7°C | 91 mm | 80% | 3.2 m/s | 4.9 |
| 2007 🌧️ | 18.9°C | 13.2°C | 7.5°C | 26.5°C | 4.7°C | 93 mm | 78% | 3.3 m/s | 5.4 |
| 2006 | 21.9°C | 15.3°C | 8.7°C | 32.4°C | 5.8°C | 27 mm | 69% | 3.6 m/s | 5.6 |
| 2005 | 17.0°C | 11.8°C | 6.6°C | 24.3°C | 3.6°C | 53 mm | 81% | 3.4 m/s | 5.3 |
| 2004 | 20.6°C | 14.5°C | 8.4°C | 31.7°C | 5.9°C | 21 mm | 73% | 3.7 m/s | 5.7 |
| 2003 | 18.0°C | 13.0°C | 8.0°C | 26.2°C | 4.1°C | 58 mm | 82% | 3.1 m/s | 5.2 |
| 2002 | 20.1°C | 14.1°C | 8.2°C | 27.5°C | 4.8°C | 53 mm | 75% | 3.6 m/s | 5.1 |
| 2001 | 18.1°C | 12.4°C | 6.7°C | 25.0°C | 3.6°C | 37 mm | 76% | 2.9 m/s | 5.3 |
| 2000 | 20.8°C | 14.4°C | 7.9°C | 31.8°C | 3.8°C | 16 mm | 71% | 2.9 m/s | 5.9 |
| 1999 | 18.1°C | 12.4°C | 6.8°C | 24.6°C | 2.3°C | 57 mm | 78% | 3.2 m/s | 5.5 |
| 1998 | 18.2°C | 12.6°C | 7.0°C | 31.4°C | 2.9°C | 37 mm | 79% | 3.2 m/s | 5.5 |
| 1997 | 19.8°C | 14.0°C | 8.1°C | 30.8°C | 3.1°C | 26 mm | 74% | 3.4 m/s | 5.8 |
| 1996 | 19.2°C | 13.3°C | 7.4°C | 28.1°C | 2.7°C | 53 mm | 79% | 2.8 m/s | 5.5 |
| 1995 | 20.1°C | 14.1°C | 8.2°C | 27.6°C | 4.2°C | 55 mm | 75% | 3.5 m/s | 5.5 |
| 1994 | 19.4°C | 13.1°C | 6.9°C | 29.0°C | 3.6°C | 57 mm | 75% | 3.2 m/s | 6 |
| 1993 | 17.3°C | 12.1°C | 6.8°C | 22.0°C | 4.5°C | 58 mm | 79% | 3.5 m/s | 5.2 |
| 1992 | 18.0°C | 12.9°C | 7.9°C | 27.3°C | 3.9°C | 55 mm | 83% | 2.9 m/s | 5.1 |
| 1991 | 21.5°C | 15.0°C | 8.5°C | 29.4°C | 4.1°C | 28 mm | 76% | 3 m/s | 5.6 |
| 1990 | 17.8°C | 12.8°C | 7.8°C | 27.2°C | 3.6°C | 76 mm | 82% | 3.1 m/s | 5 |
| 1989 | 17.1°C | 12.0°C | 6.9°C | 23.1°C | 3.1°C | 77 mm | 80% | 3.4 m/s | 5.4 |
| 1988 | 19.1°C | 13.6°C | 8.1°C | 30.0°C | 4.1°C | 33 mm | 80% | 3.9 m/s | 5.7 |
| 1987 | 20.5°C | 14.0°C | 7.5°C | 28.4°C | 3.0°C | 47 mm | 69% | 3.2 m/s | 5.4 |
| 1986 ❄️ | 17.5°C | 11.8°C | 6.0°C | 26.0°C | 2.2°C | 40 mm | 76% | 3.2 m/s | 5.8 |
| 1985 | 18.8°C | 12.8°C | 6.8°C | 28.9°C | 2.7°C | 49 mm | 73% | 3.3 m/s | 5.4 |
| 1984 | 20.2°C | 14.1°C | 8.0°C | 26.9°C | 5.6°C | 30 mm | 75% | 3.5 m/s | 5.5 |
| 1983 | 21.0°C | 14.3°C | 7.6°C | 32.5°C | 4.5°C | 43 mm | 73% | 2.7 m/s | — |
| 1982 | 21.3°C | 14.4°C | 7.6°C | 31.4°C | 3.6°C | 23 mm | 68% | 3.4 m/s | — |
| 1981 | 20.4°C | 13.7°C | 7.1°C | 31.2°C | 3.5°C | 31 mm | 73% | 3.4 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 19.8°C with lows near 7.9°C (mean 13.9°C), based on 45 years of NASA POWER data.
October averages 48 mm of rainfall in Mount Barker, about average for rainfall. The wettest on record was 93 mm in 2007.
The hottest October reached 33.7°C in 2015. The coldest dipped to 1.2°C in 2021.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 7.4°C to 8.2°C while daytime highs eased from 20.3°C to 20°C, narrowing the gap between day and night.
October is one of the cooler months of the year in Mount Barker and about average for rainfall, so plan for around 19.8°C daytime highs and 7.9°C at night.
Not quite — October is the 5th coolest month in Mount Barker, averaging 13.9°C.
For October in Mount Barker, pack warm layers and a jacket for chilly mornings, with typical highs of 19.8°C and lows of 7.9°C.
Relative humidity in October averages 76% — quite humid.
Average wind speed in October is 3.2 m/s. The windiest October on record averaged 3.9 m/s (1988).
The wettest October on record was 2007 with 93 mm. On average, October sees 48 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 Mount Barker 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.
