December is one of the warmer months of the year in Moranbah, with average highs near 35°C and lows around 20.8°C (mean 27.9°C). It is a relatively wet time of year, averaging 101 mm of rainfall and 60% relative humidity across the period.
December is one of the warmer months of the year in Moranbah. Across 45 years of records, the warmest December in Moranbah was 2001 — when the month averaged 30.5°C — while the coldest was 2000 at 24.8°C. Typical December days reach 35°C with nights near 20.8°C. The long-term December temperature trend is broadly flat.
December is a relatively wet time of year in Moranbah, averaging 101 mm of rainfall. The wettest December on record was 2010 with 402 mm, while the driest was 2013 at 24 mm.
Relative humidity in Moranbah during December averages 60%. The most humid December was 2010 at 86%, and the least humid was 2002 at 49%.
December receives about 7.1 kWh/m²/day of solar energy in Moranbah. The sunniest December was 2005 at 8.1 kWh/m²/day, and the cloudiest was 2010 at 5.5.
Average wind speed in Moranbah during December is 3.2 m/s. The windiest December was 1990 at 3.9 m/s, while the calmest was 1991 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 28.0°C | 27.5°C | 28.1°C | 27.8°C | 28.2°C | +0.2°C |
| Avg High | 35.3°C | 34.5°C | 35.3°C | 34.7°C | 35.1°C | -0.2°C |
| Avg Low | 20.6°C | 20.5°C | 21.0°C | 20.8°C | 21.3°C | +0.7°C |
| Avg Rain | 68 mm | 111 mm | 99 mm | 126 mm | 100 mm | +32 mm |
December temperatures in Moranbah have fallen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 13.9°C (2000) to a record high of 44.3°C (1996).
Rainfall in December is a relatively wet time of year, averaging 101 mm, with a wettest year of 402 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Moranbah
If your dates are flexible, the more temperate months of September and April tend to be the most comfortable for visiting Moranbah. That said, December — with days averaging 35°C and nights around 20.8°C (mean 27.9°C) and higher rainfall (101 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 35.7°C | 28.6°C | 21.5°C | 40.5°C | 17.9°C | 61 mm | 55% | 3.2 m/s | — |
| 2024 | 33.8°C | 27.6°C | 21.4°C | 40.7°C | 17.7°C | 233 mm | 70% | 2.8 m/s | 6.7 |
| 2023 | 36.9°C | 29.8°C | 22.7°C | 41.7°C | 19.0°C | 61 mm | 58% | 3.4 m/s | 6.8 |
| 2022 | 33.9°C | 26.7°C | 19.5°C | 40.6°C | 14.9°C | 60 mm | 61% | 3.3 m/s | 7 |
| 2021 | 34.0°C | 27.5°C | 21.0°C | 38.1°C | 18.5°C | 101 mm | 65% | 2.8 m/s | 7.5 |
| 2020 | 36.0°C | 28.9°C | 21.9°C | 41.3°C | 18.9°C | 87 mm | 58% | 3.3 m/s | 6.9 |
| 2019 | 38.0°C | 29.8°C | 21.6°C | 43.0°C | 18.7°C | 83 mm | 50% | 3.4 m/s | 8 |
| 2018 | 33.2°C | 27.0°C | 20.8°C | 43.8°C | 17.0°C | 190 mm | 71% | 3.8 m/s | 6.5 |
| 2017 | 35.7°C | 28.0°C | 20.2°C | 40.2°C | 17.7°C | 57 mm | 58% | 3 m/s | 7.8 |
| 2016 | 35.6°C | 28.4°C | 21.3°C | 42.7°C | 19.1°C | 107 mm | 60% | 3.1 m/s | 7 |
| 2015 | 35.1°C | 28.0°C | 20.9°C | 39.1°C | 18.2°C | 62 mm | 57% | 3.4 m/s | 7.1 |
| 2014 | 34.5°C | 27.8°C | 21.1°C | 37.5°C | 18.1°C | 151 mm | 64% | 2.9 m/s | 7.2 |
| 2013 | 36.3°C | 28.0°C | 19.7°C | 43.6°C | 17.2°C | 24 mm | 54% | 3.5 m/s | 8 |
| 2012 | 36.2°C | 28.7°C | 21.1°C | 41.6°C | 18.1°C | 44 mm | 52% | 3.4 m/s | 7.4 |
| 2011 | 33.2°C | 26.9°C | 20.5°C | 37.6°C | 17.4°C | 140 mm | 65% | 3.1 m/s | 6.4 |
| 2010 🌧️ | 28.8°C | 25.0°C | 21.2°C | 32.1°C | 18.5°C | 402 mm | 86% | 2.7 m/s | 5.5 |
| 2009 | 35.9°C | 28.4°C | 20.9°C | 40.3°C | 16.9°C | 111 mm | 57% | 3.1 m/s | 7.3 |
| 2008 | 36.6°C | 29.1°C | 21.7°C | 41.0°C | 18.0°C | 73 mm | 58% | 2.7 m/s | 7.4 |
| 2007 | 32.8°C | 26.6°C | 20.5°C | 37.8°C | 17.0°C | 153 mm | 68% | 3.1 m/s | 6.7 |
| 2006 | 34.0°C | 26.9°C | 19.8°C | 39.6°C | 16.9°C | 77 mm | 61% | 3.7 m/s | 6.5 |
| 2005 | 38.4°C | 30.4°C | 22.4°C | 41.3°C | 18.7°C | 38 mm | 50% | 2.9 m/s | 8.1 |
| 2004 | 35.2°C | 28.2°C | 21.3°C | 40.9°C | 16.3°C | 96 mm | 60% | 2.9 m/s | 7 |
| 2003 | 34.1°C | 27.5°C | 20.8°C | 40.0°C | 16.7°C | 159 mm | 64% | 3 m/s | 7.1 |
| 2002 | 36.4°C | 28.8°C | 21.1°C | 41.5°C | 17.7°C | 30 mm | 49% | 3.6 m/s | 7.8 |
| 2001 🔥 | 38.5°C | 30.5°C | 22.4°C | 43.6°C | 17.7°C | 86 mm | 53% | 3 m/s | 7.3 |
| 2000 ❄️ | 30.9°C | 24.8°C | 18.6°C | 34.9°C | 13.9°C | 162 mm | 72% | 3.1 m/s | 6.7 |
| 1999 | 33.1°C | 26.0°C | 18.8°C | 38.9°C | 16.3°C | 73 mm | 61% | 3.8 m/s | 6.9 |
| 1998 | 33.0°C | 26.7°C | 20.3°C | 39.0°C | 14.4°C | 106 mm | 69% | 3.1 m/s | 7.2 |
| 1997 | 34.4°C | 28.5°C | 22.6°C | 40.3°C | 19.0°C | 135 mm | 65% | 2.8 m/s | 6.5 |
| 1996 | 35.3°C | 28.1°C | 21.0°C | 44.3°C | 17.6°C | 82 mm | 61% | 3.3 m/s | 7.1 |
| 1995 | 35.9°C | 28.4°C | 20.9°C | 41.0°C | 15.7°C | 71 mm | 57% | 3.2 m/s | 7.1 |
| 1994 | 35.5°C | 27.7°C | 19.9°C | 40.0°C | 17.1°C | 33 mm | 54% | 3.5 m/s | 7.5 |
| 1993 | 34.2°C | 26.8°C | 19.4°C | 39.4°C | 15.4°C | 44 mm | 59% | 3.4 m/s | 7.3 |
| 1992 | 34.9°C | 27.5°C | 20.1°C | 38.8°C | 17.3°C | 82 mm | 57% | 3.3 m/s | 7.1 |
| 1991 | 34.3°C | 27.3°C | 20.4°C | 39.2°C | 16.2°C | 161 mm | 62% | 2.6 m/s | 7.6 |
| 1990 | 34.8°C | 28.2°C | 21.7°C | 41.7°C | 17.3°C | 319 mm | 63% | 3.9 m/s | 6.5 |
| 1989 | 34.3°C | 26.8°C | 19.3°C | 41.3°C | 15.2°C | 28 mm | 59% | 3.1 m/s | 7.6 |
| 1988 | 32.5°C | 26.4°C | 20.3°C | 36.0°C | 16.5°C | 123 mm | 69% | 3.5 m/s | 6.5 |
| 1987 | 34.8°C | 27.2°C | 19.6°C | 38.6°C | 15.4°C | 51 mm | 58% | 3.2 m/s | 7.5 |
| 1986 | 37.4°C | 29.4°C | 21.5°C | 42.1°C | 17.3°C | 40 mm | 52% | 3 m/s | 7.6 |
| 1985 | 35.9°C | 28.7°C | 21.4°C | 40.0°C | 18.0°C | 90 mm | 59% | 2.7 m/s | 7.8 |
| 1984 | 36.4°C | 29.2°C | 22.0°C | 41.6°C | 17.1°C | 100 mm | 60% | 2.8 m/s | 7.5 |
| 1983 | 33.1°C | 25.8°C | 18.5°C | 36.5°C | 15.5°C | 51 mm | 62% | 3.6 m/s | — |
| 1982 | 36.1°C | 28.2°C | 20.2°C | 39.5°C | 16.2°C | 82 mm | 55% | 3.2 m/s | — |
| 1981 | 37.6°C | 29.9°C | 22.2°C | 41.9°C | 18.8°C | 48 mm | 56% | 2.9 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 35°C with lows near 20.8°C (mean 27.9°C), based on 45 years of NASA POWER data.
December averages 101 mm of rainfall in Moranbah, a relatively wet time of year. The wettest on record was 402 mm in 2010.
The hottest December reached 44.3°C in 1996. The coldest dipped to 13.9°C in 2000.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 20.9°C to 21.2°C while daytime highs eased from 35.8°C to 34.9°C, narrowing the gap between day and night.
December is one of the warmer months of the year in Moranbah and a relatively wet time of year, so plan for around 35°C daytime highs and 20.8°C at night.
Not quite — December is the 12th coolest month in Moranbah, averaging 27.9°C.
For December in Moranbah, pack light, breathable clothing and sun protection, with typical highs of 35°C and lows of 20.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 60% — moderately humid.
Average wind speed in December is 3.2 m/s. The windiest December on record averaged 3.9 m/s (1990).
The wettest December on record was 2010 with 402 mm. On average, December sees 101 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 Moranbah 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.
