December is one of the warmer months of the year in Inverell, with average highs near 27.9°C and lows around 14°C (mean 21°C). It is a relatively wet time of year, averaging 102 mm of rainfall and 60% relative humidity across the period.
December is one of the warmer months of the year in Inverell. Across 45 years of records, the warmest December in Inverell was 1990 — when the month averaged 24.5°C — while the coldest was 2011 at 17°C. Typical December days reach 27.9°C with nights near 14°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Inverell, averaging 102 mm of rainfall. The wettest December on record was 2020 with 197 mm, while the driest was 2019 at 18 mm.
Relative humidity in Inverell during December averages 60%. The most humid December was 2010 at 77%, and the least humid was 2019 at 41%.
December receives about 7.3 kWh/m²/day of solar energy in Inverell. The sunniest December was 2019 at 8.2 kWh/m²/day, and the cloudiest was 2010 at 5.9.
Average wind speed in Inverell during December is 2.1 m/s. The windiest December was 1988 at 2.7 m/s, while the calmest was 2000 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.7°C | 20.7°C | 20.9°C | 21.3°C | 21.4°C | +0.7°C |
| Avg High | 27.8°C | 27.7°C | 27.7°C | 28.3°C | 28.3°C | +0.5°C |
| Avg Low | 13.6°C | 13.6°C | 14.2°C | 14.4°C | 14.6°C | +1°C |
| Avg Rain | 105 mm | 103 mm | 105 mm | 93 mm | 104 mm | -1 mm |
December temperatures in Inverell have risen by about 0.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 4.5°C (1995) to a record high of 39.9°C (2019).
Rainfall in December is a relatively wet time of year, averaging 102 mm, with a wettest year of 197 mm.
One of the best times to visit Inverell
December is one of the best times to visit Inverell. Expect days averaging 27.9°C and nights around 14°C (mean 21°C) — warmer than Inverell's yearly average — with higher rainfall (102 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 | 29.3°C | 21.9°C | 14.4°C | 35.4°C | 7.1°C | 83 mm | 54% | 2.1 m/s | — |
| 2024 | 31.2°C | 23.6°C | 16.1°C | 34.9°C | 9.9°C | 58 mm | 55% | 1.9 m/s | 7.8 |
| 2023 | 30.3°C | 23.5°C | 16.7°C | 36.8°C | 13.2°C | 140 mm | 58% | 2 m/s | 7.4 |
| 2022 | 27.0°C | 19.0°C | 11.0°C | 32.8°C | 5.8°C | 44 mm | 55% | 2.3 m/s | 7.5 |
| 2021 | 25.7°C | 19.7°C | 13.7°C | 31.2°C | 8.3°C | 100 mm | 71% | 1.9 m/s | 7.4 |
| 2020 🌧️ | 26.3°C | 20.8°C | 15.4°C | 39.7°C | 8.5°C | 197 mm | 68% | 2.4 m/s | 6.3 |
| 2019 | 33.0°C | 24.2°C | 15.4°C | 39.9°C | 6.6°C | 18 mm | 41% | 2.3 m/s | 8.2 |
| 2018 | 30.7°C | 22.8°C | 14.8°C | 35.6°C | 10.1°C | 54 mm | 53% | 2.2 m/s | 8.1 |
| 2017 | 29.4°C | 22.4°C | 15.4°C | 34.4°C | 9.5°C | 74 mm | 58% | 2 m/s | 7.4 |
| 2016 | 29.3°C | 22.4°C | 15.5°C | 35.3°C | 9.6°C | 124 mm | 60% | 2 m/s | 7.5 |
| 2015 | 27.4°C | 20.6°C | 13.8°C | 32.5°C | 8.4°C | 144 mm | 63% | 2.1 m/s | 7.3 |
| 2014 | 27.9°C | 21.4°C | 15.0°C | 33.4°C | 9.7°C | 145 mm | 64% | 2.2 m/s | 6.5 |
| 2013 | 29.5°C | 21.5°C | 13.4°C | 37.1°C | 5.6°C | 36 mm | 51% | 2 m/s | 7.8 |
| 2012 | 29.1°C | 22.2°C | 15.4°C | 34.9°C | 8.3°C | 99 mm | 59% | 2.1 m/s | 7.2 |
| 2011 ❄️ | 22.4°C | 17.0°C | 11.6°C | 25.7°C | 7.2°C | 110 mm | 76% | 1.9 m/s | 6.4 |
| 2010 | 23.9°C | 18.7°C | 13.5°C | 31.1°C | 5.1°C | 127 mm | 77% | 2.1 m/s | 5.9 |
| 2009 | 29.7°C | 22.6°C | 15.6°C | 35.7°C | 10.1°C | 138 mm | 55% | 2.2 m/s | 6.6 |
| 2008 | 26.9°C | 20.6°C | 14.4°C | 31.0°C | 8.3°C | 95 mm | 62% | 2.3 m/s | 6.9 |
| 2007 | 25.2°C | 19.6°C | 14.0°C | 28.1°C | 9.1°C | 125 mm | 73% | 2.1 m/s | 6.3 |
| 2006 | 28.3°C | 20.6°C | 13.0°C | 32.2°C | 8.8°C | 55 mm | 55% | 2 m/s | 6.8 |
| 2005 | 29.4°C | 22.3°C | 15.1°C | 37.2°C | 7.1°C | 106 mm | 53% | 2.2 m/s | 8.1 |
| 2004 | 25.6°C | 19.7°C | 13.8°C | 33.9°C | 6.3°C | 189 mm | 68% | 2.1 m/s | 7.2 |
| 2003 | 29.0°C | 21.9°C | 14.9°C | 35.3°C | 8.4°C | 99 mm | 60% | 2.1 m/s | 7.3 |
| 2002 | 28.4°C | 20.9°C | 13.4°C | 33.6°C | 5.8°C | 85 mm | 54% | 2.1 m/s | 7.3 |
| 2001 | 27.3°C | 20.7°C | 14.0°C | 33.2°C | 8.7°C | 63 mm | 57% | 2.2 m/s | 7.2 |
| 2000 | 26.7°C | 20.3°C | 13.9°C | 31.9°C | 9.1°C | 98 mm | 66% | 1.7 m/s | 7.3 |
| 1999 | 25.2°C | 18.7°C | 12.3°C | 30.2°C | 9.4°C | 91 mm | 66% | 1.9 m/s | 7 |
| 1998 | 28.8°C | 21.4°C | 14.0°C | 33.6°C | 8.2°C | 64 mm | 58% | 1.8 m/s | 7.7 |
| 1997 | 29.9°C | 23.0°C | 16.1°C | 33.7°C | 12.6°C | 119 mm | 60% | 2.1 m/s | 7.4 |
| 1996 | 27.1°C | 20.0°C | 13.0°C | 32.9°C | 8.2°C | 144 mm | 62% | 2.1 m/s | 7.4 |
| 1995 | 24.7°C | 18.2°C | 11.7°C | 30.2°C | 4.5°C | 106 mm | 66% | 2.1 m/s | 7.3 |
| 1994 | 30.0°C | 21.9°C | 13.8°C | 35.5°C | 9.3°C | 96 mm | 55% | 2.2 m/s | 7.7 |
| 1993 | 26.8°C | 19.8°C | 12.8°C | 35.5°C | 5.2°C | 104 mm | 59% | 2.5 m/s | 7.3 |
| 1992 | 25.6°C | 19.2°C | 12.7°C | 31.3°C | 5.8°C | 96 mm | 65% | 2.2 m/s | 7.2 |
| 1991 | 26.6°C | 19.8°C | 13.0°C | 34.0°C | 8.9°C | 153 mm | 62% | 2.3 m/s | 7.3 |
| 1990 🔥 | 32.5°C | 24.5°C | 16.6°C | 38.9°C | 8.7°C | 61 mm | 45% | 2.3 m/s | 7.5 |
| 1989 | 27.7°C | 20.2°C | 12.8°C | 32.6°C | 8.7°C | 104 mm | 60% | 2.2 m/s | 7.7 |
| 1988 | 29.2°C | 22.0°C | 14.8°C | 37.0°C | 8.2°C | 106 mm | 61% | 2.7 m/s | 7.1 |
| 1987 | 27.6°C | 20.6°C | 13.7°C | 32.1°C | 5.9°C | 106 mm | 59% | 2.3 m/s | 7.3 |
| 1986 | 28.0°C | 20.2°C | 12.4°C | 35.3°C | 5.9°C | 36 mm | 50% | 2.3 m/s | 7.8 |
| 1985 | 25.8°C | 19.3°C | 12.9°C | 32.4°C | 7.0°C | 157 mm | 63% | 2.2 m/s | 7.3 |
| 1984 | 28.0°C | 20.6°C | 13.2°C | 32.2°C | 7.9°C | 94 mm | 51% | 2.2 m/s | 7 |
| 1983 | 25.9°C | 19.2°C | 12.4°C | 32.0°C | 7.2°C | 113 mm | 66% | 2 m/s | — |
| 1982 | 28.7°C | 21.7°C | 14.7°C | 34.4°C | 8.5°C | 136 mm | 56% | 2 m/s | — |
| 1981 | 29.5°C | 22.4°C | 15.3°C | 36.5°C | 9.9°C | 92 mm | 56% | 2.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 27.9°C with lows near 14°C (mean 21°C), based on 45 years of NASA POWER data.
December averages 102 mm of rainfall in Inverell, a relatively wet time of year. The wettest on record was 197 mm in 2020.
The hottest December reached 39.9°C in 2019. The coldest dipped to 4.5°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.9°C. Daytime highs moved from 27.6°C to 28.7°C and overnight lows from 13.7°C to 14.4°C over the same span.
December is one of the warmer months of the year in Inverell and a relatively wet time of year, so plan for around 27.9°C daytime highs and 14°C at night.
Not quite — December is the 10th coolest month in Inverell, averaging 21°C.
For December in Inverell, pack light layers you can adjust through the day, with typical highs of 27.9°C and lows of 14°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 60% — moderately humid.
Average wind speed in December is 2.1 m/s. The windiest December on record averaged 2.7 m/s (1988).
The wettest December on record was 2020 with 197 mm. On average, December sees 102 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 Inverell 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.
