December is one of the warmer months of the year in Dalby, with average highs near 32.6°C and lows around 17.7°C (mean 25.2°C). It is a relatively wet time of year, averaging 88 mm of rainfall and 59% relative humidity across the period.
December is one of the warmer months of the year in Dalby. Across 45 years of records, the warmest December in Dalby was 2019 — when the month averaged 28°C — while the coldest was 2010 at 22.2°C. Typical December days reach 32.6°C with nights near 17.7°C. The long-term trend is warming, about 0.2°C per decade.
December is a relatively wet time of year in Dalby, averaging 88 mm of rainfall. The wettest December on record was 2010 with 329 mm, while the driest was 2019 at 14 mm.
Relative humidity in Dalby during December averages 59%. The most humid December was 2010 at 79%, and the least humid was 2019 at 40%.
December receives about 7.2 kWh/m²/day of solar energy in Dalby. The sunniest December was 2019 at 8.2 kWh/m²/day, and the cloudiest was 2010 at 5.4.
Average wind speed in Dalby during December is 3.1 m/s. The windiest December was 1988 at 3.8 m/s, while the calmest was 2021 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.9°C | 24.9°C | 25.3°C | 25.2°C | 25.6°C | +0.7°C |
| Avg High | 32.5°C | 32.5°C | 32.6°C | 32.6°C | 32.9°C | +0.4°C |
| Avg Low | 17.2°C | 17.3°C | 17.9°C | 17.8°C | 18.3°C | +1.1°C |
| Avg Rain | 86 mm | 90 mm | 88 mm | 98 mm | 69 mm | -16 mm |
December temperatures in Dalby have risen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 8.2°C (2010) to a record high of 42.9°C (1990).
Rainfall in December is a relatively wet time of year, averaging 88 mm, with a wettest year of 329 mm.
A good time to visit Dalby
December is a good time to visit Dalby, with days averaging 32.6°C and nights around 17.7°C (mean 25.2°C, warmer than Dalby's yearly average) and higher rainfall. October and April are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.8°C | 26.0°C | 18.2°C | 39.1°C | 11.4°C | 30 mm | 54% | 2.8 m/s | — |
| 2024 | 33.3°C | 26.3°C | 19.3°C | 37.6°C | 15.2°C | 136 mm | 64% | 2.8 m/s | 7.2 |
| 2023 | 34.6°C | 27.1°C | 19.7°C | 38.2°C | 16.9°C | 91 mm | 60% | 2.7 m/s | 7.5 |
| 2022 | 32.3°C | 24.2°C | 16.2°C | 38.5°C | 11.5°C | 34 mm | 51% | 3.3 m/s | 7.3 |
| 2021 | 30.2°C | 23.8°C | 17.5°C | 34.9°C | 12.0°C | 52 mm | 69% | 2.4 m/s | 7.4 |
| 2020 | 33.1°C | 26.1°C | 19.1°C | 42.0°C | 15.2°C | 73 mm | 59% | 3.2 m/s | 6.6 |
| 2019 🔥 | 37.0°C | 28.0°C | 19.0°C | 40.8°C | 14.6°C | 14 mm | 40% | 3.2 m/s | 8.2 |
| 2018 | 33.7°C | 25.8°C | 17.8°C | 39.8°C | 13.8°C | 95 mm | 56% | 3.5 m/s | 7.8 |
| 2017 | 33.7°C | 26.1°C | 18.5°C | 39.1°C | 12.0°C | 88 mm | 57% | 3 m/s | 7.5 |
| 2016 | 34.6°C | 26.6°C | 18.6°C | 39.3°C | 14.1°C | 36 mm | 55% | 3.1 m/s | 7.5 |
| 2015 | 31.8°C | 24.5°C | 17.2°C | 37.4°C | 13.3°C | 60 mm | 59% | 3.1 m/s | 7.1 |
| 2014 | 31.4°C | 25.0°C | 18.5°C | 36.2°C | 13.5°C | 161 mm | 66% | 2.8 m/s | 6.5 |
| 2013 | 33.6°C | 25.2°C | 16.9°C | 41.7°C | 11.8°C | 38 mm | 52% | 2.9 m/s | 7.8 |
| 2012 | 33.7°C | 26.1°C | 18.5°C | 40.9°C | 13.0°C | 74 mm | 54% | 3.1 m/s | 7.3 |
| 2011 | 29.2°C | 22.6°C | 16.0°C | 33.7°C | 12.6°C | 90 mm | 66% | 3.2 m/s | 6.3 |
| 2010 ❄️ 🌧️ | 27.2°C | 22.2°C | 17.1°C | 31.4°C | 8.2°C | 329 mm | 79% | 3.2 m/s | 5.4 |
| 2009 | 33.7°C | 26.5°C | 19.3°C | 40.4°C | 15.3°C | 88 mm | 57% | 2.9 m/s | 6.6 |
| 2008 | 32.7°C | 25.4°C | 18.2°C | 37.0°C | 12.2°C | 97 mm | 59% | 3 m/s | 7.2 |
| 2007 | 30.0°C | 23.9°C | 17.7°C | 34.3°C | 14.2°C | 102 mm | 69% | 3.3 m/s | 6.3 |
| 2006 | 31.6°C | 23.8°C | 16.0°C | 36.8°C | 11.6°C | 60 mm | 57% | 3.5 m/s | 7 |
| 2005 | 34.6°C | 26.7°C | 18.7°C | 40.6°C | 11.4°C | 76 mm | 55% | 2.9 m/s | 8.1 |
| 2004 | 31.6°C | 24.7°C | 17.7°C | 37.2°C | 10.3°C | 113 mm | 63% | 2.9 m/s | 7 |
| 2003 | 31.7°C | 24.7°C | 17.7°C | 39.0°C | 13.4°C | 131 mm | 64% | 2.9 m/s | 7.3 |
| 2002 | 33.2°C | 25.1°C | 17.0°C | 39.9°C | 11.8°C | 87 mm | 52% | 3.2 m/s | 7.7 |
| 2001 | 33.9°C | 26.0°C | 18.2°C | 39.9°C | 13.9°C | 74 mm | 57% | 3 m/s | 7.2 |
| 2000 | 33.4°C | 25.9°C | 18.3°C | 38.8°C | 14.8°C | 56 mm | 56% | 3 m/s | 7 |
| 1999 | 29.6°C | 22.3°C | 15.1°C | 36.4°C | 12.7°C | 112 mm | 63% | 3.4 m/s | 7.3 |
| 1998 | 32.8°C | 25.4°C | 18.1°C | 38.5°C | 12.2°C | 70 mm | 59% | 3 m/s | 7.4 |
| 1997 | 34.4°C | 27.1°C | 19.8°C | 40.3°C | 14.6°C | 87 mm | 59% | 2.8 m/s | 7.3 |
| 1996 | 32.8°C | 25.2°C | 17.5°C | 41.6°C | 12.7°C | 104 mm | 58% | 3.1 m/s | 7.2 |
| 1995 | 30.6°C | 23.3°C | 15.9°C | 35.0°C | 12.2°C | 137 mm | 63% | 3.1 m/s | 7.4 |
| 1994 | 33.4°C | 25.1°C | 16.9°C | 39.8°C | 12.4°C | 36 mm | 53% | 3.4 m/s | 7.6 |
| 1993 | 31.4°C | 23.6°C | 15.8°C | 38.5°C | 9.8°C | 135 mm | 57% | 3.3 m/s | 7.4 |
| 1992 | 32.5°C | 25.0°C | 17.6°C | 39.0°C | 12.7°C | 44 mm | 55% | 3.2 m/s | 7 |
| 1991 | 31.6°C | 24.2°C | 16.8°C | 36.1°C | 13.5°C | 131 mm | 63% | 3.2 m/s | 7.6 |
| 1990 | 35.6°C | 27.5°C | 19.5°C | 42.9°C | 15.2°C | 42 mm | 52% | 3.3 m/s | 7.2 |
| 1989 | 32.0°C | 24.4°C | 16.7°C | 36.5°C | 12.4°C | 78 mm | 59% | 3.1 m/s | 7.6 |
| 1988 | 32.7°C | 25.4°C | 18.1°C | 36.3°C | 14.0°C | 93 mm | 62% | 3.8 m/s | 6.9 |
| 1987 | 32.1°C | 24.6°C | 17.1°C | 36.1°C | 10.2°C | 63 mm | 59% | 3.1 m/s | 7.6 |
| 1986 | 32.5°C | 24.5°C | 16.5°C | 39.7°C | 10.1°C | 40 mm | 54% | 3.3 m/s | 7.7 |
| 1985 | 33.1°C | 25.3°C | 17.5°C | 40.1°C | 12.5°C | 105 mm | 58% | 2.9 m/s | 7.2 |
| 1984 | 33.6°C | 25.7°C | 17.9°C | 37.9°C | 13.8°C | 99 mm | 54% | 3 m/s | 6.9 |
| 1983 | 29.7°C | 22.3°C | 14.8°C | 35.1°C | 11.0°C | 53 mm | 66% | 3.1 m/s | — |
| 1982 | 32.9°C | 25.3°C | 17.7°C | 38.4°C | 13.9°C | 121 mm | 56% | 3 m/s | — |
| 1981 | 33.9°C | 26.4°C | 18.8°C | 41.2°C | 15.3°C | 116 mm | 60% | 3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 32.6°C with lows near 17.7°C (mean 25.2°C), based on 45 years of NASA POWER data.
December averages 88 mm of rainfall in Dalby, a relatively wet time of year. The wettest on record was 329 mm in 2010.
The hottest December reached 42.9°C in 1990. The coldest dipped to 8.2°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.5°C. Daytime highs moved from 32.6°C to 32.8°C and overnight lows from 17.3°C to 18.2°C over the same span.
December is one of the warmer months of the year in Dalby and a relatively wet time of year, so plan for around 32.6°C daytime highs and 17.7°C at night.
Not quite — December is the 10th coolest month in Dalby, averaging 25.2°C.
For December in Dalby, pack light, breathable clothing and sun protection, with typical highs of 32.6°C and lows of 17.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 59% — moderately humid.
Average wind speed in December is 3.1 m/s. The windiest December on record averaged 3.8 m/s (1988).
The wettest December on record was 2010 with 329 mm. On average, December sees 88 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 Dalby 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.
