December is one of the warmer months of the year in Armidale, with average highs near 26.1°C and lows around 12.6°C (mean 19.4°C). It is a relatively wet time of year, averaging 110 mm of rainfall and 66% relative humidity across the period.
December is one of the warmer months of the year in Armidale. Across 45 years of records, the warmest December in Armidale was 1990 — when the month averaged 22.9°C — while the coldest was 2011 at 15.2°C. Typical December days reach 26.1°C with nights near 12.6°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Armidale, averaging 110 mm of rainfall. The wettest December on record was 2020 with 278 mm, while the driest was 1986 at 35 mm.
Relative humidity in Armidale during December averages 66%. The most humid December was 2011 at 83%, and the least humid was 2019 at 49%.
December receives about 7.2 kWh/m²/day of solar energy in Armidale. The sunniest December was 2005 at 8.3 kWh/m²/day, and the cloudiest was 2010 at 5.9.
Average wind speed in Armidale during December is 2.1 m/s. The windiest Decembers were 1993, 2001 and 2020, among others at 2.5 m/s, while the calmest were 1998, 2000 and 2021 at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.0°C | 19.0°C | 19.5°C | 19.7°C | 19.8°C | +0.8°C |
| Avg High | 25.9°C | 25.7°C | 26.1°C | 26.5°C | 26.4°C | +0.5°C |
| Avg Low | 12.1°C | 12.3°C | 12.9°C | 12.9°C | 13.2°C | +1.1°C |
| Avg Rain | 116 mm | 115 mm | 101 mm | 99 mm | 126 mm | +10 mm |
December temperatures in Armidale have risen by about 0.8°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 2.1°C (1995) to a record high of 37.2°C (2020).
Rainfall in December is a relatively wet time of year, averaging 110 mm, with a wettest year of 278 mm.
One of the best times to visit Armidale
December is one of the best times to visit Armidale. Expect days averaging 26.1°C and nights around 12.6°C (mean 19.4°C) — warmer than Armidale's yearly average — with higher rainfall (110 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 | 27.7°C | 20.2°C | 12.7°C | 33.8°C | 5.8°C | 83 mm | 59% | 2.1 m/s | — |
| 2024 | 30.1°C | 22.4°C | 14.7°C | 33.9°C | 8.4°C | 61 mm | 59% | 2 m/s | 7.8 |
| 2023 | 28.8°C | 21.9°C | 15.1°C | 35.0°C | 12.1°C | 134 mm | 63% | 1.9 m/s | 7.4 |
| 2022 | 24.5°C | 17.3°C | 10.1°C | 30.5°C | 4.2°C | 60 mm | 63% | 2.4 m/s | 7.6 |
| 2021 | 22.9°C | 17.7°C | 12.5°C | 28.8°C | 7.6°C | 143 mm | 80% | 1.8 m/s | 7.3 |
| 2020 🌧️ | 24.2°C | 19.0°C | 13.8°C | 37.2°C | 7.0°C | 278 mm | 76% | 2.5 m/s | 6.1 |
| 2019 | 30.8°C | 22.0°C | 13.3°C | 36.8°C | 5.7°C | 36 mm | 49% | 2.3 m/s | 8 |
| 2018 | 28.7°C | 21.0°C | 13.4°C | 33.5°C | 8.7°C | 71 mm | 60% | 2.2 m/s | 8 |
| 2017 | 27.9°C | 20.9°C | 13.9°C | 34.0°C | 7.4°C | 87 mm | 64% | 2 m/s | 7.2 |
| 2016 | 28.9°C | 21.7°C | 14.5°C | 34.0°C | 9.7°C | 91 mm | 61% | 1.9 m/s | 7.2 |
| 2015 | 25.8°C | 19.1°C | 12.3°C | 31.8°C | 7.9°C | 125 mm | 67% | 2.2 m/s | 7.3 |
| 2014 | 25.8°C | 19.7°C | 13.5°C | 31.9°C | 9.5°C | 180 mm | 71% | 2.2 m/s | 6.4 |
| 2013 | 27.9°C | 19.9°C | 12.0°C | 35.7°C | 5.0°C | 39 mm | 56% | 2.1 m/s | 7.8 |
| 2012 | 27.1°C | 20.5°C | 13.9°C | 33.2°C | 7.0°C | 111 mm | 66% | 2.1 m/s | 7.2 |
| 2011 ❄️ | 20.2°C | 15.2°C | 10.2°C | 24.4°C | 6.2°C | 110 mm | 83% | 2 m/s | 6.2 |
| 2010 | 22.0°C | 17.2°C | 12.4°C | 27.2°C | 3.2°C | 139 mm | 82% | 2.2 m/s | 5.9 |
| 2009 | 28.0°C | 21.0°C | 14.1°C | 33.8°C | 8.4°C | 165 mm | 63% | 2 m/s | 6.6 |
| 2008 | 25.7°C | 19.1°C | 12.6°C | 29.8°C | 7.1°C | 89 mm | 66% | 2.4 m/s | 6.8 |
| 2007 | 22.6°C | 17.7°C | 12.8°C | 26.5°C | 8.0°C | 140 mm | 81% | 2 m/s | 6.4 |
| 2006 | 25.9°C | 18.7°C | 11.4°C | 32.3°C | 7.9°C | 66 mm | 63% | 2 m/s | 6.7 |
| 2005 | 28.5°C | 21.2°C | 13.9°C | 36.1°C | 5.8°C | 70 mm | 56% | 2.2 m/s | 8.3 |
| 2004 | 24.9°C | 18.7°C | 12.5°C | 33.0°C | 5.4°C | 143 mm | 69% | 2.1 m/s | 7.1 |
| 2003 | 27.2°C | 20.4°C | 13.6°C | 33.6°C | 8.6°C | 96 mm | 66% | 2 m/s | 7.3 |
| 2002 | 26.7°C | 19.4°C | 12.1°C | 32.4°C | 5.2°C | 79 mm | 59% | 2.1 m/s | 7.2 |
| 2001 | 26.4°C | 19.6°C | 12.7°C | 31.9°C | 7.7°C | 61 mm | 59% | 2.5 m/s | 7.1 |
| 2000 | 25.5°C | 19.1°C | 12.8°C | 31.1°C | 8.7°C | 104 mm | 69% | 1.8 m/s | 7.1 |
| 1999 | 23.4°C | 17.2°C | 11.0°C | 28.9°C | 8.1°C | 100 mm | 72% | 1.9 m/s | 6.8 |
| 1998 | 26.8°C | 19.8°C | 12.9°C | 31.8°C | 7.7°C | 60 mm | 66% | 1.8 m/s | 7.4 |
| 1997 | 28.4°C | 21.6°C | 14.8°C | 31.8°C | 11.4°C | 112 mm | 64% | 2.1 m/s | 7.4 |
| 1996 | 24.6°C | 18.0°C | 11.3°C | 29.8°C | 5.5°C | 155 mm | 70% | 2 m/s | 7.3 |
| 1995 | 23.6°C | 17.0°C | 10.4°C | 29.3°C | 2.1°C | 109 mm | 70% | 2.1 m/s | 7.2 |
| 1994 | 27.1°C | 19.7°C | 12.4°C | 34.5°C | 6.1°C | 118 mm | 64% | 2.3 m/s | 7.5 |
| 1993 | 24.4°C | 18.0°C | 11.5°C | 34.7°C | 4.4°C | 135 mm | 66% | 2.5 m/s | 7.2 |
| 1992 | 23.3°C | 17.5°C | 11.6°C | 28.7°C | 5.6°C | 115 mm | 73% | 2.1 m/s | 6.8 |
| 1991 | 24.7°C | 18.2°C | 11.7°C | 32.6°C | 7.4°C | 176 mm | 68% | 2.2 m/s | 7 |
| 1990 🔥 | 30.9°C | 22.9°C | 15.0°C | 36.8°C | 7.7°C | 75 mm | 51% | 2.2 m/s | 7.4 |
| 1989 | 25.0°C | 18.2°C | 11.4°C | 29.3°C | 6.9°C | 120 mm | 69% | 2.2 m/s | 7.5 |
| 1988 | 25.9°C | 19.6°C | 13.4°C | 34.9°C | 7.4°C | 160 mm | 73% | 2.5 m/s | 6.6 |
| 1987 | 25.6°C | 18.9°C | 12.2°C | 30.8°C | 5.8°C | 110 mm | 63% | 2.3 m/s | 7.3 |
| 1986 | 26.7°C | 18.8°C | 10.8°C | 34.0°C | 4.8°C | 35 mm | 56% | 2.3 m/s | 8 |
| 1985 | 24.7°C | 18.1°C | 11.6°C | 30.9°C | 6.6°C | 145 mm | 66% | 2.3 m/s | 7.2 |
| 1984 | 26.1°C | 18.7°C | 11.4°C | 31.0°C | 6.2°C | 80 mm | 56% | 2.3 m/s | 7.3 |
| 1983 | 23.4°C | 17.3°C | 11.3°C | 30.9°C | 8.0°C | 153 mm | 74% | 2.1 m/s | — |
| 1982 | 27.6°C | 20.4°C | 13.3°C | 32.5°C | 7.8°C | 142 mm | 61% | 2 m/s | — |
| 1981 | 28.1°C | 20.9°C | 13.6°C | 35.3°C | 8.6°C | 103 mm | 61% | 2.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 26.1°C with lows near 12.6°C (mean 19.4°C), based on 45 years of NASA POWER data.
December averages 110 mm of rainfall in Armidale, a relatively wet time of year. The wettest on record was 278 mm in 2020.
The hottest December reached 37.2°C in 2020. The coldest dipped to 2.1°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.8°C. Daytime highs moved from 26°C to 26.8°C and overnight lows from 12.2°C to 13°C over the same span.
December is one of the warmer months of the year in Armidale and a relatively wet time of year, so plan for around 26.1°C daytime highs and 12.6°C at night.
Not quite — December is the 10th coolest month in Armidale, averaging 19.4°C.
For December in Armidale, pack light layers you can adjust through the day, with typical highs of 26.1°C and lows of 12.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 66% — moderately humid.
Average wind speed in December is 2.1 m/s. The windiest December on record averaged 2.5 m/s (1988).
The wettest December on record was 2020 with 278 mm. On average, December sees 110 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 Armidale 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.
