October is one of the cooler months of the year in Dandenong, with average highs near 18.1°C and lows around 9.2°C (mean 13.7°C). It is a relatively wet time of year, averaging 75 mm of rainfall and 75% relative humidity across the period.
October is one of the cooler months of the year in Dandenong. Across 45 years of records, the warmest October in Dandenong was 2015 — when the month averaged 16.9°C — while the coldest was 2003 at 11.8°C. Typical October days reach 18.1°C with nights near 9.2°C. The long-term trend is warming, about 0.4°C per decade.
October is a relatively wet time of year in Dandenong, averaging 75 mm of rainfall. The wettest October on record was 2022 with 222 mm, while the driest was 2006 at 14 mm.
Relative humidity in Dandenong during October averages 75%. The most humid October was 2022 at 83%, and the least humid was 2006 at 64%.
October receives about 5.2 kWh/m²/day of solar energy in Dandenong. The sunniest October was 2006 at 6.4 kWh/m²/day, and the cloudiest was 2001 at 4.4.
Average wind speed in Dandenong during October is 3.4 m/s. The windiest October was 2016 at 4.6 m/s, while the calmest were 1983, 1992 and 2018 at 2.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.9°C | 13.3°C | 13.7°C | 14.3°C | 14.0°C | +1.1°C |
| Avg High | 17.2°C | 17.5°C | 18.2°C | 19.1°C | 18.3°C | +1.1°C |
| Avg Low | 8.7°C | 9.1°C | 9.2°C | 9.6°C | 9.8°C | +1.1°C |
| Avg Rain | 76 mm | 74 mm | 60 mm | 63 mm | 120 mm | +44 mm |
October temperatures in Dandenong have risen by about 1.1°C between 1981–1985 and 2021–2025.
October has ranged from a record low of 3.4°C (1994) to a record high of 30.4°C (2009).
Rainfall in October is a relatively wet time of year, averaging 75 mm, with a wettest year of 222 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
A good time to visit Dandenong
October is a good time to visit Dandenong, with days averaging 18.1°C and nights around 9.2°C (mean 13.7°C, cooler than Dandenong'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 | 19.3°C | 14.5°C | 9.8°C | 27.4°C | 5.1°C | 77 mm | 69% | 3.5 m/s | 5 |
| 2024 | 19.8°C | 15.1°C | 10.3°C | 27.4°C | 5.8°C | 73 mm | 71% | 3.3 m/s | 5.8 |
| 2023 | 18.4°C | 14.1°C | 9.9°C | 26.0°C | 7.9°C | 130 mm | 71% | 3.7 m/s | 5.1 |
| 2022 🌧️ | 17.4°C | 13.7°C | 10.0°C | 23.2°C | 6.7°C | 222 mm | 83% | 3 m/s | 4.5 |
| 2021 | 17.6°C | 13.4°C | 9.3°C | 24.4°C | 5.9°C | 104 mm | 77% | 3.4 m/s | 5.2 |
| 2020 | 17.4°C | 13.4°C | 9.3°C | 24.5°C | 6.7°C | 112 mm | 80% | 3.5 m/s | 4.9 |
| 2019 | 19.7°C | 14.8°C | 9.8°C | 29.6°C | 6.1°C | 40 mm | 69% | 3.1 m/s | 5.7 |
| 2018 | 20.2°C | 15.1°C | 9.9°C | 26.0°C | 6.6°C | 40 mm | 69% | 2.9 m/s | 5.7 |
| 2017 | 19.8°C | 14.8°C | 9.9°C | 27.7°C | 6.8°C | 63 mm | 72% | 3.1 m/s | 5.5 |
| 2016 | 17.0°C | 12.6°C | 8.3°C | 22.6°C | 6.0°C | 100 mm | 73% | 4.6 m/s | 5.1 |
| 2015 🔥 | 23.0°C | 16.9°C | 10.9°C | 29.5°C | 7.0°C | 27 mm | 66% | 3 m/s | 5.9 |
| 2014 | 20.0°C | 14.9°C | 9.8°C | 29.1°C | 7.0°C | 41 mm | 72% | 3.4 m/s | 5.5 |
| 2013 | 17.1°C | 13.1°C | 9.2°C | 26.1°C | 6.2°C | 70 mm | 75% | 4.1 m/s | 4.9 |
| 2012 | 17.8°C | 13.5°C | 9.3°C | 27.3°C | 6.9°C | 42 mm | 76% | 3 m/s | 5.2 |
| 2011 | 18.2°C | 13.9°C | 9.6°C | 26.3°C | 4.6°C | 73 mm | 77% | 3 m/s | 5 |
| 2010 | 17.7°C | 13.5°C | 9.2°C | 23.1°C | 6.3°C | 133 mm | 79% | 3 m/s | 5.2 |
| 2009 | 17.5°C | 13.2°C | 8.9°C | 30.4°C | 5.3°C | 51 mm | 76% | 3.2 m/s | 5.4 |
| 2008 | 20.1°C | 14.9°C | 9.6°C | 28.1°C | 5.7°C | 21 mm | 66% | 3.2 m/s | 5.5 |
| 2007 | 18.9°C | 14.0°C | 9.2°C | 29.3°C | 5.9°C | 29 mm | 69% | 3.6 m/s | 5.6 |
| 2006 | 19.6°C | 14.3°C | 9.0°C | 30.1°C | 6.4°C | 14 mm | 64% | 3.4 m/s | 6.4 |
| 2005 | 19.3°C | 14.8°C | 10.3°C | 24.6°C | 6.3°C | 63 mm | 73% | 3.1 m/s | 5.2 |
| 2004 | 18.6°C | 14.1°C | 9.7°C | 25.5°C | 7.3°C | 54 mm | 75% | 3.1 m/s | 5.6 |
| 2003 ❄️ | 15.5°C | 11.8°C | 8.0°C | 22.9°C | 5.0°C | 101 mm | 78% | 3.3 m/s | 4.5 |
| 2002 | 18.9°C | 14.2°C | 9.4°C | 26.7°C | 5.9°C | 47 mm | 68% | 3.6 m/s | 5 |
| 2001 | 17.0°C | 13.2°C | 9.3°C | 22.9°C | 6.9°C | 105 mm | 77% | 3.5 m/s | 4.4 |
| 2000 | 16.6°C | 12.8°C | 9.0°C | 22.9°C | 4.8°C | 118 mm | 79% | 3.3 m/s | 4.9 |
| 1999 | 18.9°C | 14.5°C | 10.2°C | 24.1°C | 6.8°C | 62 mm | 75% | 3.1 m/s | 5.2 |
| 1998 | 17.3°C | 13.1°C | 8.9°C | 25.6°C | 6.8°C | 93 mm | 73% | 3.6 m/s | 4.9 |
| 1997 | 18.8°C | 14.1°C | 9.5°C | 29.1°C | 6.5°C | 64 mm | 71% | 3.5 m/s | 5.3 |
| 1996 | 17.2°C | 13.1°C | 9.0°C | 23.7°C | 6.6°C | 48 mm | 78% | 3.4 m/s | 5.5 |
| 1995 | 16.0°C | 12.1°C | 8.3°C | 25.1°C | 6.0°C | 93 mm | 79% | 3.5 m/s | 5 |
| 1994 | 18.0°C | 13.2°C | 8.4°C | 27.9°C | 3.4°C | 48 mm | 72% | 3.3 m/s | 5.5 |
| 1993 | 16.6°C | 12.6°C | 8.6°C | 21.3°C | 6.5°C | 92 mm | 79% | 3.4 m/s | 5.1 |
| 1992 | 16.9°C | 13.1°C | 9.3°C | 24.5°C | 5.6°C | 110 mm | 82% | 2.9 m/s | 4.9 |
| 1991 | 18.1°C | 13.9°C | 9.6°C | 25.5°C | 7.0°C | 30 mm | 79% | 3.3 m/s | 5.8 |
| 1990 | 17.5°C | 13.5°C | 9.5°C | 26.8°C | 5.6°C | 102 mm | 80% | 3.2 m/s | 5.5 |
| 1989 | 16.2°C | 12.4°C | 8.5°C | 22.0°C | 6.2°C | 125 mm | 81% | 3.7 m/s | 5.2 |
| 1988 | 18.3°C | 13.8°C | 9.2°C | 25.1°C | 6.0°C | 49 mm | 71% | 4.5 m/s | 5.1 |
| 1987 | 17.2°C | 12.9°C | 8.5°C | 28.0°C | 5.0°C | 53 mm | 77% | 3.4 m/s | 5.4 |
| 1986 | 15.7°C | 11.9°C | 8.1°C | 21.2°C | 5.8°C | 111 mm | 80% | 3.8 m/s | 4.5 |
| 1985 | 17.9°C | 13.3°C | 8.8°C | 22.1°C | 5.2°C | 76 mm | 78% | 3.2 m/s | 5.5 |
| 1984 | 17.5°C | 13.0°C | 8.6°C | 23.5°C | 5.3°C | 49 mm | 77% | 3.3 m/s | 5.4 |
| 1983 | 16.4°C | 12.7°C | 8.9°C | 22.3°C | 5.4°C | 107 mm | 83% | 2.9 m/s | — |
| 1982 | 18.1°C | 13.2°C | 8.4°C | 30.0°C | 5.1°C | 44 mm | 68% | 3.3 m/s | — |
| 1981 | 17.7°C | 13.3°C | 8.9°C | 23.6°C | 6.3°C | 67 mm | 77% | 3.2 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 18.1°C with lows near 9.2°C (mean 13.7°C), based on 45 years of NASA POWER data.
October averages 75 mm of rainfall in Dandenong, a relatively wet time of year. The wettest on record was 222 mm in 2022.
The hottest October reached 30.4°C in 2009. The coldest dipped to 3.4°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.1°C. Daytime highs moved from 17.5°C to 18.5°C and overnight lows from 8.7°C to 9.9°C over the same span.
October is one of the cooler months of the year in Dandenong and a relatively wet time of year, so plan for around 18.1°C daytime highs and 9.2°C at night.
Not quite — October is the 6th coolest month in Dandenong, averaging 13.7°C.
For October in Dandenong, pack light layers you can adjust through the day, with typical highs of 18.1°C and lows of 9.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 75% — moderately humid.
Average wind speed in October is 3.4 m/s. The windiest October on record averaged 4.6 m/s (2016).
The wettest October on record was 2022 with 222 mm. On average, October sees 75 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 Dandenong 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.
