December is one of the warmer months of the year in Stawell, with average highs near 27°C and lows around 10.8°C (mean 18.9°C). It is about average for rainfall, averaging 38 mm of rainfall and 55% relative humidity across the period.
December is one of the warmer months of the year in Stawell. Across 45 years of records, the warmest December in Stawell was 2015 — when the month averaged 22.4°C — while the coldest was 2001 at 15.7°C. Typical December days reach 27°C with nights near 10.8°C. The long-term trend is warming, about 0.2°C per decade.
December is about average for rainfall in Stawell, averaging 38 mm of rainfall. The wettest December on record was 2010 with 129 mm, while the driest was 1997 at 4 mm.
Relative humidity in Stawell during December averages 55%. The most humid December was 1992 at 72%, and the least humid was 2015 at 39%.
December receives about 7.1 kWh/m²/day of solar energy in Stawell. The sunniest December was 2021 at 8 kWh/m²/day, and the cloudiest was 1992 at 5.8.
Average wind speed in Stawell during December is 2.9 m/s. The windiest December was 1984 at 3.4 m/s, while the calmest were 2009, 2018 and 2022 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.5°C | 18.7°C | 19.0°C | 19.8°C | 18.4°C | -0.1°C |
| Avg High | 26.5°C | 26.7°C | 27.2°C | 28.0°C | 26.4°C | -0.1°C |
| Avg Low | 10.5°C | 10.6°C | 10.7°C | 11.7°C | 10.4°C | -0.1°C |
| Avg Rain | 39 mm | 34 mm | 39 mm | 39 mm | 41 mm | +3 mm |
December temperatures in Stawell have stayed relatively stable across the record.
December has ranged from a record low of 3.9°C (1994) to a record high of 44.6°C (2019).
Rainfall in December is about average for rainfall, averaging 38 mm, with a wettest year of 129 mm.
One of the best times to visit Stawell
December is one of the best times to visit Stawell. Expect days averaging 27°C and nights around 10.8°C (mean 18.9°C) — warmer than Stawell's yearly average — with moderate rainfall (38 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 | 26.8°C | 18.4°C | 9.9°C | 38.4°C | 5.7°C | 32 mm | 53% | 2.8 m/s | — |
| 2024 | 28.1°C | 19.8°C | 11.4°C | 41.3°C | 7.8°C | 36 mm | 55% | 2.8 m/s | 7.5 |
| 2023 | 26.1°C | 18.9°C | 11.6°C | 36.9°C | 7.7°C | 104 mm | 64% | 2.9 m/s | 6.3 |
| 2022 | 24.9°C | 17.4°C | 9.9°C | 37.5°C | 4.6°C | 28 mm | 63% | 2.6 m/s | 7.3 |
| 2021 | 27.7°C | 19.0°C | 10.3°C | 37.6°C | 6.4°C | 15 mm | 55% | 2.8 m/s | 8 |
| 2020 | 24.8°C | 17.0°C | 9.2°C | 34.4°C | 5.8°C | 34 mm | 58% | 3 m/s | 6.8 |
| 2019 | 30.1°C | 21.1°C | 12.1°C | 44.6°C | 6.1°C | 11 mm | 48% | 3.1 m/s | 7.9 |
| 2018 | 28.8°C | 21.0°C | 13.2°C | 39.3°C | 8.1°C | 68 mm | 58% | 2.6 m/s | 6.7 |
| 2017 | 27.1°C | 19.3°C | 11.5°C | 37.8°C | 6.3°C | 34 mm | 57% | 2.7 m/s | 7.1 |
| 2016 | 27.8°C | 19.5°C | 11.2°C | 37.4°C | 6.1°C | 28 mm | 52% | 2.8 m/s | 7.3 |
| 2015 🔥 | 31.3°C | 22.4°C | 13.5°C | 41.9°C | 5.7°C | 21 mm | 39% | 2.8 m/s | 7.7 |
| 2014 | 28.0°C | 19.9°C | 11.9°C | 35.1°C | 7.8°C | 13 mm | 50% | 2.8 m/s | 7.1 |
| 2013 | 28.0°C | 19.3°C | 10.6°C | 40.6°C | 4.9°C | 17 mm | 53% | 2.8 m/s | 7.3 |
| 2012 | 27.6°C | 19.4°C | 11.2°C | 37.3°C | 7.3°C | 19 mm | 51% | 2.9 m/s | 7.3 |
| 2011 | 27.7°C | 19.4°C | 11.1°C | 35.9°C | 5.8°C | 51 mm | 56% | 2.7 m/s | 7.5 |
| 2010 🌧️ | 23.3°C | 16.8°C | 10.3°C | 38.1°C | 4.9°C | 129 mm | 70% | 2.7 m/s | 6.7 |
| 2009 | 27.3°C | 18.7°C | 10.2°C | 37.7°C | 6.5°C | 40 mm | 55% | 2.6 m/s | 7.5 |
| 2008 | 24.3°C | 17.1°C | 9.8°C | 30.6°C | 6.1°C | 81 mm | 61% | 2.9 m/s | 6.7 |
| 2007 | 28.1°C | 19.9°C | 11.6°C | 41.2°C | 5.4°C | 55 mm | 54% | 2.7 m/s | 7.2 |
| 2006 | 28.3°C | 19.3°C | 10.4°C | 40.8°C | 5.6°C | 19 mm | 42% | 3.1 m/s | 7.8 |
| 2005 | 27.9°C | 19.5°C | 11.2°C | 43.5°C | 6.9°C | 30 mm | 52% | 3.3 m/s | 7.1 |
| 2004 | 26.8°C | 19.1°C | 11.5°C | 38.2°C | 6.4°C | 38 mm | 57% | 2.8 m/s | 7.1 |
| 2003 | 29.7°C | 21.1°C | 12.5°C | 38.8°C | 6.7°C | 39 mm | 50% | 2.9 m/s | 7.2 |
| 2002 | 28.2°C | 19.5°C | 10.9°C | 38.6°C | 5.2°C | 35 mm | 51% | 3.3 m/s | 7.2 |
| 2001 ❄️ | 22.9°C | 15.7°C | 8.5°C | 34.5°C | 4.4°C | 27 mm | 64% | 2.9 m/s | 5.9 |
| 2000 | 28.8°C | 19.8°C | 10.7°C | 38.8°C | 6.0°C | 23 mm | 50% | 2.9 m/s | 7.7 |
| 1999 | 26.4°C | 18.6°C | 10.8°C | 35.8°C | 5.6°C | 56 mm | 55% | 3 m/s | 7 |
| 1998 | 28.1°C | 19.7°C | 11.3°C | 40.6°C | 6.4°C | 19 mm | 54% | 2.8 m/s | 7 |
| 1997 | 28.1°C | 19.6°C | 11.2°C | 35.2°C | 7.4°C | 4 mm | 51% | 2.9 m/s | 7.4 |
| 1996 | 25.6°C | 17.2°C | 8.8°C | 35.0°C | 5.4°C | 22 mm | 53% | 2.8 m/s | 7.1 |
| 1995 | 25.0°C | 16.8°C | 8.7°C | 33.7°C | 4.1°C | 24 mm | 57% | 3.1 m/s | 7 |
| 1994 | 30.3°C | 21.1°C | 11.8°C | 37.9°C | 3.9°C | 7 mm | 42% | 2.9 m/s | 7.9 |
| 1993 | 24.8°C | 17.3°C | 9.7°C | 32.7°C | 4.3°C | 64 mm | 60% | 3.1 m/s | 7 |
| 1992 | 24.3°C | 18.1°C | 11.9°C | 32.3°C | 6.4°C | 92 mm | 72% | 2.8 m/s | 5.8 |
| 1991 | 25.8°C | 18.0°C | 10.3°C | 37.4°C | 4.3°C | 34 mm | 58% | 2.8 m/s | 7 |
| 1990 | 28.8°C | 20.3°C | 11.7°C | 39.4°C | 6.9°C | 19 mm | 51% | 3 m/s | 7.1 |
| 1989 | 27.9°C | 19.5°C | 11.1°C | 36.0°C | 6.4°C | 12 mm | 51% | 3 m/s | 7.3 |
| 1988 | 28.1°C | 20.0°C | 11.8°C | 36.7°C | 6.7°C | 33 mm | 57% | 2.8 m/s | 6.9 |
| 1987 | 26.1°C | 17.9°C | 9.8°C | 37.0°C | 5.1°C | 74 mm | 57% | 3 m/s | 7.1 |
| 1986 | 23.5°C | 16.1°C | 8.6°C | 35.3°C | 4.6°C | 76 mm | 63% | 3 m/s | 6.4 |
| 1985 | 24.1°C | 17.4°C | 10.6°C | 31.8°C | 7.4°C | 83 mm | 64% | 3 m/s | 6 |
| 1984 | 25.9°C | 17.8°C | 9.8°C | 35.1°C | 5.6°C | 17 mm | 54% | 3.4 m/s | 6.9 |
| 1983 | 27.5°C | 19.1°C | 10.8°C | 37.9°C | 4.9°C | 26 mm | 56% | 2.7 m/s | — |
| 1982 | 28.3°C | 20.0°C | 11.6°C | 37.0°C | 6.4°C | 14 mm | 45% | 3 m/s | — |
| 1981 | 27.2°C | 18.9°C | 10.6°C | 38.5°C | 5.9°C | 11 mm | 52% | 3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 27°C with lows near 10.8°C (mean 18.9°C), based on 45 years of NASA POWER data.
December averages 38 mm of rainfall in Stawell, about average for rainfall. The wettest on record was 129 mm in 2010.
The hottest December reached 44.6°C in 2019. The coldest dipped to 3.9°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Daytime highs rose from 26.6°C to 26.7°C while overnight lows fell from 10.7°C to 10.6°C, widening the gap between day and night.
December is one of the warmer months of the year in Stawell and about average for rainfall, so plan for around 27°C daytime highs and 10.8°C at night.
Not quite — December is the 10th coolest month in Stawell, averaging 18.9°C.
For December in Stawell, pack light layers you can adjust through the day, with typical highs of 27°C and lows of 10.8°C.
Relative humidity in December averages 55% — relatively dry.
Average wind speed in December is 2.9 m/s. The windiest December on record averaged 3.4 m/s (1984).
The wettest December on record was 2010 with 129 mm. On average, December sees 38 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 Stawell 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.
