October is one of the cooler months of the year in Mount Gambier, with average highs near 16.3°C and lows around 9.9°C (mean 13.1°C). It is about average for rainfall, averaging 57 mm of rainfall and 76% relative humidity across the period.
October is one of the cooler months of the year in Mount Gambier. Across 45 years of records, the warmest October in Mount Gambier was 2015 — when the month averaged 15.1°C — while the coldest was 2003 at 11.8°C. Typical October days reach 16.3°C with nights near 9.9°C. The long-term trend is warming, about 0.2°C per decade.
October is about average for rainfall in Mount Gambier, averaging 57 mm of rainfall. The wettest October on record was 2022 with 125 mm, while the driest was 2006 at 16 mm.
Relative humidity in Mount Gambier during October averages 76%. The most humid October was 2022 at 81%, and the least humid was 2006 at 68%.
October receives about 5.3 kWh/m²/day of solar energy in Mount Gambier. The sunniest October was 2006 at 6.2 kWh/m²/day, and the cloudiest was 2022 at 4.7.
Average wind speed in Mount Gambier during October is 4 m/s. The windiest October was 1988 at 5.6 m/s, while the calmest was 2012 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.7°C | 13.0°C | 13.0°C | 13.6°C | 13.3°C | +0.6°C |
| Avg High | 15.9°C | 16.2°C | 16.1°C | 17.0°C | 16.3°C | +0.4°C |
| Avg Low | 9.6°C | 9.8°C | 9.9°C | 10.2°C | 10.2°C | +0.6°C |
| Avg Rain | 56 mm | 56 mm | 60 mm | 44 mm | 78 mm | +22 mm |
October temperatures in Mount Gambier have risen by about 0.5°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 4.7°C (1989) to a record high of 29°C (2019).
Rainfall in October is about average for rainfall, averaging 57 mm, with a wettest year of 125 mm.
A good time to visit Mount Gambier
October is a good time to visit Mount Gambier, with days averaging 16.3°C and nights around 9.9°C (mean 13.1°C, cooler than Mount Gambier'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 | 16.3°C | 13.5°C | 10.7°C | 22.0°C | 8.3°C | 58 mm | 76% | 4.6 m/s | 5 |
| 2024 | 17.6°C | 14.3°C | 10.9°C | 23.7°C | 7.0°C | 38 mm | 74% | 3.6 m/s | 5.6 |
| 2023 | 16.7°C | 13.5°C | 10.2°C | 25.4°C | 7.3°C | 46 mm | 71% | 4.2 m/s | 5.7 |
| 2022 🌧️ | 16.5°C | 13.6°C | 10.8°C | 21.5°C | 7.6°C | 125 mm | 81% | 3.6 m/s | 4.7 |
| 2021 | 15.2°C | 12.2°C | 9.2°C | 21.6°C | 6.0°C | 85 mm | 78% | 3.9 m/s | 5.2 |
| 2020 | 15.4°C | 12.4°C | 9.3°C | 21.8°C | 7.7°C | 117 mm | 81% | 3.7 m/s | 4.8 |
| 2019 | 17.9°C | 14.0°C | 10.1°C | 29.0°C | 5.4°C | 33 mm | 71% | 3.8 m/s | 5.6 |
| 2018 | 18.0°C | 14.3°C | 10.6°C | 23.8°C | 7.8°C | 20 mm | 74% | 3.5 m/s | 5.2 |
| 2017 | 17.4°C | 14.2°C | 10.9°C | 27.8°C | 8.1°C | 36 mm | 76% | 3.6 m/s | 5.3 |
| 2016 | 15.6°C | 12.4°C | 9.3°C | 22.1°C | 6.3°C | 68 mm | 73% | 4.9 m/s | 5.5 |
| 2015 🔥 | 19.6°C | 15.1°C | 10.5°C | 27.0°C | 7.5°C | 18 mm | 71% | 3.4 m/s | 6 |
| 2014 | 17.4°C | 14.2°C | 11.0°C | 25.2°C | 8.7°C | 24 mm | 75% | 3.8 m/s | 5.7 |
| 2013 | 15.2°C | 12.9°C | 10.6°C | 22.1°C | 9.0°C | 108 mm | 78% | 4.8 m/s | 4.8 |
| 2012 | 16.0°C | 12.9°C | 9.7°C | 23.6°C | 7.4°C | 38 mm | 75% | 3.3 m/s | 5.3 |
| 2011 | 16.6°C | 13.4°C | 10.2°C | 24.7°C | 6.0°C | 38 mm | 77% | 3.5 m/s | 5.2 |
| 2010 | 16.2°C | 12.8°C | 9.3°C | 21.9°C | 6.7°C | 56 mm | 77% | 3.4 m/s | 5.3 |
| 2009 | 15.8°C | 12.7°C | 9.7°C | 25.5°C | 7.1°C | 54 mm | 77% | 3.7 m/s | 5.5 |
| 2008 | 17.1°C | 13.5°C | 10.0°C | 24.2°C | 6.6°C | 20 mm | 74% | 3.6 m/s | 5.4 |
| 2007 | 16.1°C | 13.0°C | 9.8°C | 22.3°C | 7.3°C | 62 mm | 75% | 4.3 m/s | 5.4 |
| 2006 | 17.2°C | 13.3°C | 9.4°C | 25.1°C | 6.1°C | 16 mm | 68% | 3.9 m/s | 6.2 |
| 2005 | 16.7°C | 13.6°C | 10.6°C | 21.9°C | 6.8°C | 116 mm | 78% | 3.7 m/s | 5.2 |
| 2004 | 16.9°C | 13.4°C | 9.9°C | 24.0°C | 7.3°C | 30 mm | 78% | 3.5 m/s | 5.9 |
| 2003 ❄️ | 14.4°C | 11.8°C | 9.2°C | 23.4°C | 7.4°C | 61 mm | 77% | 4.2 m/s | 5 |
| 2002 | 16.1°C | 13.1°C | 10.2°C | 22.5°C | 7.8°C | 58 mm | 77% | 4.4 m/s | 4.8 |
| 2001 | 14.8°C | 12.5°C | 10.1°C | 20.5°C | 7.0°C | 93 mm | 77% | 4.6 m/s | 4.8 |
| 2000 | 15.8°C | 12.9°C | 10.0°C | 22.4°C | 7.4°C | 91 mm | 79% | 3.9 m/s | 5.2 |
| 1999 | 17.8°C | 14.5°C | 11.2°C | 24.6°C | 8.0°C | 47 mm | 74% | 3.8 m/s | 5.5 |
| 1998 | 15.3°C | 12.5°C | 9.6°C | 20.9°C | 7.3°C | 50 mm | 75% | 4.1 m/s | 5.3 |
| 1997 | 16.4°C | 13.0°C | 9.7°C | 26.9°C | 7.0°C | 63 mm | 74% | 4.2 m/s | 5.4 |
| 1996 | 15.9°C | 12.7°C | 9.5°C | 22.5°C | 7.3°C | 31 mm | 77% | 3.9 m/s | 5.6 |
| 1995 | 15.3°C | 12.2°C | 9.1°C | 19.6°C | 5.5°C | 28 mm | 75% | 4.2 m/s | 5 |
| 1994 | 16.1°C | 12.7°C | 9.4°C | 23.8°C | 6.2°C | 65 mm | 75% | 3.8 m/s | 5.5 |
| 1993 | 16.1°C | 12.9°C | 9.7°C | 21.6°C | 7.0°C | 72 mm | 72% | 4.2 m/s | 5.6 |
| 1992 | 16.4°C | 13.1°C | 9.8°C | 23.8°C | 6.0°C | 107 mm | 81% | 3.4 m/s | 5.1 |
| 1991 | 16.4°C | 13.4°C | 10.4°C | 22.8°C | 8.0°C | 18 mm | 77% | 3.8 m/s | 5.5 |
| 1990 | 15.9°C | 12.8°C | 9.7°C | 25.1°C | 6.0°C | 78 mm | 79% | 3.7 m/s | 5.2 |
| 1989 | 15.1°C | 12.2°C | 9.2°C | 20.4°C | 4.7°C | 91 mm | 78% | 4.6 m/s | 5.5 |
| 1988 | 15.9°C | 13.3°C | 10.7°C | 21.4°C | 8.4°C | 54 mm | 76% | 5.6 m/s | 5.2 |
| 1987 | 15.8°C | 12.7°C | 9.7°C | 28.5°C | 7.2°C | 61 mm | 75% | 3.8 m/s | 5.3 |
| 1986 | 14.8°C | 12.0°C | 9.2°C | 20.7°C | 6.7°C | 93 mm | 78% | 4.5 m/s | 5.4 |
| 1985 | 17.0°C | 13.4°C | 9.9°C | 22.6°C | 6.7°C | 58 mm | 74% | 3.9 m/s | 5.5 |
| 1984 | 16.1°C | 12.8°C | 9.5°C | 21.1°C | 6.7°C | 42 mm | 78% | 3.8 m/s | 5.5 |
| 1983 | 15.9°C | 12.6°C | 9.3°C | 20.8°C | 6.5°C | 21 mm | 79% | 3.4 m/s | — |
| 1982 | 16.0°C | 12.7°C | 9.4°C | 22.9°C | 5.4°C | 39 mm | 73% | 4.1 m/s | — |
| 1981 | 16.3°C | 13.0°C | 9.7°C | 23.0°C | 6.5°C | 50 mm | 77% | 3.8 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 16.3°C with lows near 9.9°C (mean 13.1°C), based on 45 years of NASA POWER data.
October averages 57 mm of rainfall in Mount Gambier, about average for rainfall. The wettest on record was 125 mm in 2022.
The hottest October reached 29°C in 2019. The coldest dipped to 4.7°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.5°C. Daytime highs moved from 16.3°C to 16.5°C and overnight lows from 9.6°C to 10.4°C over the same span.
October is one of the cooler months of the year in Mount Gambier and about average for rainfall, so plan for around 16.3°C daytime highs and 9.9°C at night.
Not quite — October is the 5th coolest month in Mount Gambier, averaging 13.1°C.
For October in Mount Gambier, pack light layers you can adjust through the day, with typical highs of 16.3°C and lows of 9.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 76% — quite humid.
Average wind speed in October is 4 m/s. The windiest October on record averaged 5.6 m/s (1988).
The wettest October on record was 2022 with 125 mm. On average, October sees 57 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 Gambier 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.
