December is one of the warmer months of the year in Pakenham, with average highs near 23.8°C and lows around 11.1°C (mean 17.5°C). It is about average for rainfall, averaging 75 mm of rainfall and 65% relative humidity across the period.
December is one of the warmer months of the year in Pakenham. Across 45 years of records, the warmest December in Pakenham was 2015 — when the month averaged 20.8°C — while the coldest was 1995 at 14.4°C. Typical December days reach 23.8°C with nights near 11.1°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Pakenham, averaging 75 mm of rainfall. The wettest December on record was 1985 with 163 mm, while the driest was 1997 at 19 mm.
Relative humidity in Pakenham during December averages 65%. The most humid December was 1992 at 79%, and the least humid was 2015 at 51%.
December receives about 7 kWh/m²/day of solar energy in Pakenham. The sunniest Decembers were 2000 and 2015 at 7.8 kWh/m²/day, and the cloudiest was 2001 at 6.2.
Average wind speed in Pakenham during December is 0.2 m/s. The windiest Decembers were 2022, 2024 and 2025, among others at 0.2 m/s, while the calmest were 2017, 2021 and 2023, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.7°C | 17.0°C | 17.6°C | 18.4°C | 17.7°C | +1°C |
| Avg High | 22.8°C | 23.2°C | 24.2°C | 24.8°C | 24.2°C | +1.4°C |
| Avg Low | 10.7°C | 10.8°C | 11.1°C | 11.9°C | 11.3°C | +0.6°C |
| Avg Rain | 83 mm | 82 mm | 70 mm | 74 mm | 60 mm | -23 mm |
December temperatures in Pakenham have risen by about 1.1°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 3.2°C (1994) to a record high of 41.5°C (2019).
Rainfall in December is about average for rainfall, averaging 75 mm, with a wettest year of 163 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
One of the best times to visit Pakenham
December is one of the best times to visit Pakenham. Expect days averaging 23.8°C and nights around 11.1°C (mean 17.5°C) — warmer than Pakenham's yearly average — with moderate rainfall (75 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 23.7°C | 17.2°C | 10.8°C | 35.4°C | 6.8°C | 43 mm | 60% | 0.2 m/s | — |
| 2024 | 26.2°C | 19.2°C | 12.3°C | 37.6°C | 8.8°C | 36 mm | 61% | 0.2 m/s | 7.6 |
| 2023 | 24.2°C | 18.4°C | 12.5°C | 34.4°C | 9.2°C | 114 mm | 70% | 0.1 m/s | 6.3 |
| 2022 | 23.0°C | 16.9°C | 10.8°C | 35.0°C | 4.8°C | 75 mm | 70% | 0.2 m/s | 7.4 |
| 2021 | 24.5°C | 17.7°C | 10.9°C | 36.4°C | 6.1°C | 30 mm | 63% | 0.1 m/s | 7.4 |
| 2020 | 23.3°C | 16.8°C | 10.4°C | 32.7°C | 5.7°C | 63 mm | 62% | 0.2 m/s | 6.8 |
| 2019 | 25.5°C | 18.6°C | 11.7°C | 41.5°C | 6.9°C | 20 mm | 57% | 0.2 m/s | 7.3 |
| 2018 | 26.4°C | 20.0°C | 13.5°C | 36.8°C | 7.7°C | 81 mm | 66% | 0.2 m/s | 6.9 |
| 2017 | 24.1°C | 18.2°C | 12.3°C | 33.1°C | 9.0°C | 143 mm | 68% | 0.1 m/s | 6.7 |
| 2016 | 25.8°C | 18.9°C | 12.0°C | 35.9°C | 7.5°C | 62 mm | 60% | 0.1 m/s | 7.1 |
| 2015 🔥 | 28.5°C | 20.8°C | 13.0°C | 40.1°C | 8.3°C | 39 mm | 51% | 0.1 m/s | 7.8 |
| 2014 | 24.7°C | 18.2°C | 11.7°C | 33.5°C | 7.8°C | 63 mm | 65% | 0.1 m/s | 6.7 |
| 2013 | 23.7°C | 17.4°C | 11.1°C | 35.5°C | 7.1°C | 72 mm | 65% | 0.2 m/s | 6.6 |
| 2012 | 24.3°C | 17.8°C | 11.3°C | 36.0°C | 7.7°C | 59 mm | 62% | 0.1 m/s | 7.2 |
| 2011 | 23.0°C | 17.2°C | 11.4°C | 31.8°C | 4.7°C | 77 mm | 68% | 0.1 m/s | 7.4 |
| 2010 | 21.8°C | 16.6°C | 11.3°C | 34.2°C | 6.5°C | 122 mm | 74% | 0.2 m/s | 6.8 |
| 2009 | 24.6°C | 17.6°C | 10.7°C | 35.8°C | 6.0°C | 61 mm | 62% | 0.2 m/s | 7.2 |
| 2008 | 21.4°C | 15.8°C | 10.3°C | 29.2°C | 4.9°C | 97 mm | 69% | 0.2 m/s | 6.7 |
| 2007 | 25.6°C | 19.0°C | 12.3°C | 36.5°C | 7.0°C | 107 mm | 63% | 0.1 m/s | 7.2 |
| 2006 | 24.8°C | 17.4°C | 10.1°C | 39.5°C | 6.6°C | 49 mm | 55% | 0.2 m/s | 7.5 |
| 2005 | 25.8°C | 18.7°C | 11.6°C | 40.4°C | 7.5°C | 85 mm | 56% | 0.2 m/s | 7.1 |
| 2004 | 22.7°C | 17.1°C | 11.4°C | 33.9°C | 7.4°C | 66 mm | 68% | 0.2 m/s | 7.1 |
| 2003 | 26.7°C | 19.8°C | 12.8°C | 37.5°C | 7.5°C | 63 mm | 60% | 0.1 m/s | 7.3 |
| 2002 | 24.5°C | 18.1°C | 11.7°C | 34.8°C | 6.7°C | 50 mm | 61% | 0.2 m/s | 6.5 |
| 2001 | 20.4°C | 14.8°C | 9.3°C | 32.0°C | 6.6°C | 66 mm | 69% | 0.2 m/s | 6.2 |
| 2000 | 25.1°C | 18.1°C | 11.0°C | 37.5°C | 7.7°C | 53 mm | 59% | 0.2 m/s | 7.8 |
| 1999 | 23.6°C | 17.6°C | 11.5°C | 34.3°C | 7.0°C | 98 mm | 63% | 0.2 m/s | 6.9 |
| 1998 | 24.2°C | 17.7°C | 11.2°C | 37.3°C | 7.2°C | 92 mm | 65% | 0.2 m/s | 7 |
| 1997 | 25.2°C | 18.3°C | 11.4°C | 32.5°C | 7.4°C | 19 mm | 60% | 0.2 m/s | 7.2 |
| 1996 | 21.9°C | 15.3°C | 8.7°C | 31.9°C | 4.8°C | 40 mm | 64% | 0.2 m/s | 7 |
| 1995 ❄️ | 20.1°C | 14.4°C | 8.7°C | 29.7°C | 5.1°C | 90 mm | 71% | 0.2 m/s | 6.5 |
| 1994 | 27.3°C | 19.4°C | 11.6°C | 36.3°C | 3.2°C | 21 mm | 56% | 0.1 m/s | 7.7 |
| 1993 | 21.0°C | 15.4°C | 9.8°C | 28.9°C | 5.4°C | 142 mm | 73% | 0.1 m/s | 6.4 |
| 1992 | 21.7°C | 17.0°C | 12.4°C | 27.8°C | 5.6°C | 124 mm | 79% | 0.1 m/s | 6.3 |
| 1991 | 21.7°C | 16.1°C | 10.4°C | 31.9°C | 6.1°C | 141 mm | 71% | 0.2 m/s | 6.8 |
| 1990 | 24.9°C | 18.4°C | 11.9°C | 35.7°C | 7.6°C | 52 mm | 62% | 0.2 m/s | 6.7 |
| 1989 | 24.3°C | 17.7°C | 11.1°C | 33.6°C | 6.7°C | 55 mm | 64% | 0.1 m/s | 7.6 |
| 1988 | 23.5°C | 17.6°C | 11.7°C | 34.9°C | 7.7°C | 113 mm | 71% | 0.1 m/s | 6.6 |
| 1987 | 22.4°C | 16.0°C | 9.6°C | 33.1°C | 6.1°C | 86 mm | 66% | 0.2 m/s | 7.1 |
| 1986 | 21.0°C | 15.3°C | 9.7°C | 30.2°C | 5.1°C | 125 mm | 69% | 0.2 m/s | 6.6 |
| 1985 🌧️ | 20.8°C | 16.2°C | 11.5°C | 26.7°C | 7.3°C | 163 mm | 76% | 0.2 m/s | 6.5 |
| 1984 | 21.7°C | 15.8°C | 9.9°C | 29.4°C | 6.4°C | 84 mm | 66% | 0.2 m/s | 6.8 |
| 1983 | 23.1°C | 17.1°C | 11.0°C | 32.7°C | 6.7°C | 22 mm | 67% | 0.1 m/s | — |
| 1982 | 24.8°C | 17.8°C | 10.8°C | 35.3°C | 6.9°C | 56 mm | 58% | 0.2 m/s | — |
| 1981 | 23.5°C | 17.0°C | 10.6°C | 34.6°C | 7.7°C | 47 mm | 62% | 0.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 23.8°C with lows near 11.1°C (mean 17.5°C), based on 45 years of NASA POWER data.
December averages 75 mm of rainfall in Pakenham, about average for rainfall. The wettest on record was 163 mm in 1985.
The hottest December reached 41.5°C in 2019. The coldest dipped to 3.2°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.1°C. Daytime highs moved from 22.8°C to 24.3°C and overnight lows from 10.8°C to 11.5°C over the same span.
December is one of the warmer months of the year in Pakenham and about average for rainfall, so plan for around 23.8°C daytime highs and 11.1°C at night.
Not quite — December is the 9th coolest month in Pakenham, averaging 17.5°C.
For December in Pakenham, pack light layers you can adjust through the day, with typical highs of 23.8°C and lows of 11.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 65% — moderately humid.
Average wind speed in December is 0.2 m/s. The windiest December on record averaged 0.2 m/s (1981).
The wettest December on record was 1985 with 163 mm. On average, December 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 Pakenham behaves each December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
