October is one of the cooler months of the year in Colac, with average highs near 16.5°C and lows around 9.2°C (mean 12.9°C). It is a relatively wet time of year, averaging 74 mm of rainfall and 76% relative humidity across the period.
October is one of the cooler months of the year in Colac. Across 45 years of records, the warmest October in Colac was 2015 — when the month averaged 16°C — while the coldest was 2003 at 11.2°C. Typical October days reach 16.5°C with nights near 9.2°C. The long-term trend is warming, about 0.3°C per decade.
October is a relatively wet time of year in Colac, averaging 74 mm of rainfall. The wettest October on record was 2022 with 208 mm, while the driest was 2015 at 9 mm.
Relative humidity in Colac during October averages 76%. The most humid October was 2022 at 83%, and the least humid was 2006 at 66%.
October receives about 5.2 kWh/m²/day of solar energy in Colac. The sunniest Octobers were 2006 and 2015 at 6 kWh/m²/day, and the cloudiest was 2001 at 4.5.
Average wind speed in Colac during October is 2.5 m/s. The windiest October was 1988 at 3.4 m/s, while the calmest was 2015 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.4°C | 12.6°C | 12.8°C | 13.5°C | 13.3°C | +0.9°C |
| Avg High | 16.0°C | 16.1°C | 16.3°C | 17.4°C | 17.0°C | +1°C |
| Avg Low | 8.8°C | 9.0°C | 9.2°C | 9.5°C | 9.6°C | +0.8°C |
| Avg Rain | 81 mm | 75 mm | 70 mm | 60 mm | 94 mm | +13 mm |
October temperatures in Colac have risen by about 0.7°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 3.7°C (1994) to a record high of 29.3°C (2015).
Rainfall in October is a relatively wet time of year, averaging 74 mm, with a wettest year of 208 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
A good time to visit Colac
October is a good time to visit Colac, with days averaging 16.5°C and nights around 9.2°C (mean 12.9°C, cooler than Colac'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 | 17.5°C | 13.5°C | 9.5°C | 26.6°C | 6.0°C | 61 mm | 72% | 2.7 m/s | 5 |
| 2024 | 18.5°C | 14.4°C | 10.3°C | 23.7°C | 6.9°C | 51 mm | 70% | 2.5 m/s | 5.8 |
| 2023 | 17.6°C | 13.6°C | 9.6°C | 25.6°C | 7.7°C | 54 mm | 68% | 2.8 m/s | 5.3 |
| 2022 🌧️ | 16.1°C | 13.0°C | 9.8°C | 21.4°C | 6.7°C | 208 mm | 83% | 2.3 m/s | 4.7 |
| 2021 | 16.2°C | 12.7°C | 9.2°C | 22.8°C | 6.6°C | 98 mm | 78% | 2.5 m/s | 5.1 |
| 2020 | 15.8°C | 12.5°C | 9.1°C | 23.9°C | 6.5°C | 93 mm | 79% | 2.6 m/s | 4.8 |
| 2019 | 18.0°C | 13.7°C | 9.4°C | 28.2°C | 6.6°C | 44 mm | 72% | 2.3 m/s | 5.4 |
| 2018 | 18.5°C | 14.4°C | 10.2°C | 24.8°C | 7.5°C | 32 mm | 71% | 2.2 m/s | 5.3 |
| 2017 | 18.2°C | 14.1°C | 10.0°C | 27.1°C | 7.0°C | 47 mm | 73% | 2.3 m/s | 5.5 |
| 2016 | 15.8°C | 12.0°C | 8.2°C | 21.7°C | 6.1°C | 96 mm | 73% | 3.1 m/s | 5.3 |
| 2015 🔥 | 21.3°C | 16.0°C | 10.7°C | 29.3°C | 7.2°C | 9 mm | 66% | 2.1 m/s | 6 |
| 2014 | 17.6°C | 13.7°C | 9.9°C | 26.2°C | 7.6°C | 35 mm | 76% | 2.5 m/s | 5.3 |
| 2013 | 15.4°C | 12.3°C | 9.1°C | 22.5°C | 6.6°C | 97 mm | 80% | 3 m/s | 4.8 |
| 2012 | 16.1°C | 12.6°C | 9.1°C | 25.3°C | 5.7°C | 49 mm | 78% | 2.3 m/s | 5.1 |
| 2011 | 17.1°C | 13.4°C | 9.7°C | 25.3°C | 7.4°C | 71 mm | 76% | 2.3 m/s | 5 |
| 2010 | 16.2°C | 12.6°C | 8.9°C | 22.4°C | 5.8°C | 114 mm | 80% | 2.3 m/s | 5.3 |
| 2009 | 15.6°C | 12.4°C | 9.2°C | 25.9°C | 7.2°C | 54 mm | 79% | 2.4 m/s | 5.3 |
| 2008 | 18.1°C | 13.7°C | 9.4°C | 26.9°C | 6.2°C | 25 mm | 71% | 2.3 m/s | 5.2 |
| 2007 | 16.4°C | 12.6°C | 8.8°C | 24.0°C | 4.8°C | 43 mm | 75% | 2.6 m/s | 5.3 |
| 2006 | 17.9°C | 13.4°C | 8.9°C | 28.4°C | 6.7°C | 22 mm | 66% | 2.4 m/s | 6 |
| 2005 | 17.2°C | 13.6°C | 10.0°C | 20.6°C | 5.5°C | 83 mm | 76% | 2.4 m/s | 5.2 |
| 2004 | 16.9°C | 13.3°C | 9.7°C | 24.4°C | 6.2°C | 56 mm | 77% | 2.3 m/s | 5.5 |
| 2003 ❄️ | 14.2°C | 11.2°C | 8.2°C | 22.1°C | 5.4°C | 109 mm | 80% | 2.6 m/s | 4.6 |
| 2002 | 16.3°C | 12.9°C | 9.4°C | 24.0°C | 6.4°C | 63 mm | 75% | 2.7 m/s | 4.9 |
| 2001 | 15.3°C | 12.2°C | 9.1°C | 21.7°C | 6.6°C | 113 mm | 80% | 2.7 m/s | 4.5 |
| 2000 | 15.4°C | 12.2°C | 9.0°C | 22.2°C | 6.0°C | 127 mm | 81% | 2.5 m/s | 4.8 |
| 1999 | 17.5°C | 13.9°C | 10.3°C | 24.4°C | 7.3°C | 65 mm | 74% | 2.4 m/s | 5.1 |
| 1998 | 15.7°C | 12.1°C | 8.5°C | 23.5°C | 5.3°C | 97 mm | 76% | 2.6 m/s | 5 |
| 1997 | 16.8°C | 13.0°C | 9.1°C | 25.4°C | 6.3°C | 78 mm | 74% | 2.5 m/s | 4.9 |
| 1996 | 16.0°C | 12.5°C | 8.9°C | 22.5°C | 6.1°C | 43 mm | 79% | 2.5 m/s | 5.2 |
| 1995 | 15.0°C | 11.7°C | 8.4°C | 22.6°C | 4.9°C | 61 mm | 77% | 2.7 m/s | 4.8 |
| 1994 | 16.1°C | 12.2°C | 8.3°C | 24.3°C | 3.7°C | 70 mm | 76% | 2.4 m/s | 5.4 |
| 1993 | 15.4°C | 12.0°C | 8.6°C | 19.5°C | 6.1°C | 95 mm | 77% | 2.6 m/s | 5.3 |
| 1992 | 15.7°C | 12.5°C | 9.3°C | 23.7°C | 6.5°C | 111 mm | 82% | 2.2 m/s | 4.7 |
| 1991 | 16.7°C | 13.2°C | 9.6°C | 23.6°C | 7.1°C | 29 mm | 79% | 2.5 m/s | 5.5 |
| 1990 | 16.0°C | 12.6°C | 9.2°C | 25.5°C | 6.4°C | 105 mm | 81% | 2.3 m/s | 5 |
| 1989 | 15.1°C | 11.8°C | 8.4°C | 20.2°C | 6.2°C | 135 mm | 81% | 2.8 m/s | 5.2 |
| 1988 | 16.6°C | 13.0°C | 9.5°C | 24.2°C | 6.4°C | 71 mm | 74% | 3.4 m/s | 5.3 |
| 1987 | 15.8°C | 12.3°C | 8.9°C | 27.4°C | 5.8°C | 65 mm | 77% | 2.4 m/s | 5.2 |
| 1986 | 14.5°C | 11.3°C | 8.1°C | 20.3°C | 5.3°C | 144 mm | 81% | 2.8 m/s | 4.9 |
| 1985 | 16.9°C | 13.1°C | 9.3°C | 21.5°C | 6.5°C | 71 mm | 76% | 2.6 m/s | 5.4 |
| 1984 | 16.3°C | 12.5°C | 8.6°C | 21.3°C | 5.1°C | 40 mm | 77% | 2.5 m/s | 5.6 |
| 1983 | 15.5°C | 12.2°C | 9.0°C | 19.9°C | 6.4°C | 84 mm | 81% | 2.2 m/s | — |
| 1982 | 16.8°C | 12.6°C | 8.5°C | 28.0°C | 5.8°C | 50 mm | 71% | 2.6 m/s | — |
| 1981 | 16.9°C | 12.9°C | 9.0°C | 23.8°C | 6.2°C | 71 mm | 76% | 2.4 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 16.5°C with lows near 9.2°C (mean 12.9°C), based on 45 years of NASA POWER data.
October averages 74 mm of rainfall in Colac, a relatively wet time of year. The wettest on record was 208 mm in 2022.
The hottest October reached 29.3°C in 2015. The coldest dipped to 3.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.7°C. Daytime highs moved from 16.5°C to 17.2°C and overnight lows from 8.9°C to 9.7°C over the same span.
October is one of the cooler months of the year in Colac and a relatively wet time of year, so plan for around 16.5°C daytime highs and 9.2°C at night.
Not quite — October is the 6th coolest month in Colac, averaging 12.9°C.
For October in Colac, pack light layers you can adjust through the day, with typical highs of 16.5°C and lows of 9.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 76% — quite humid.
Average wind speed in October is 2.5 m/s. The windiest October on record averaged 3.4 m/s (1988).
The wettest October on record was 2022 with 208 mm. On average, October sees 74 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 Colac 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.
