December is one of the warmer months of the year in Launceston, with average highs near 20.8°C and lows around 8.4°C (mean 14.6°C). It is one of the drier months, averaging 63 mm of rainfall and 70% relative humidity across the period.
December is one of the warmer months of the year in Launceston. Across 45 years of records, the warmest December in Launceston was 2015 — when the month averaged 17.5°C — while the coldest was 1996 at 11.9°C. Typical December days reach 20.8°C with nights near 8.4°C. The long-term trend is warming, about 0.4°C per decade.
December is one of the drier months in Launceston, averaging 63 mm of rainfall. The wettest December on record was 1985 with 167 mm, while the driest was 1994 at 14 mm.
Relative humidity in Launceston during December averages 70%. The most humid December was 1992 at 81%, and the least humid was 2019 at 59%.
December receives about 6.9 kWh/m²/day of solar energy in Launceston. The sunniest December was 2015 at 7.7 kWh/m²/day, and the cloudiest was 1985 at 5.7.
Average wind speed in Launceston during December is 2.7 m/s. The windiest December was 2025 at 3.2 m/s, while the calmest were 1991 and 2011 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.1°C | 14.0°C | 14.5°C | 15.4°C | 15.2°C | +1.1°C |
| Avg High | 20.2°C | 20.1°C | 20.6°C | 21.7°C | 21.6°C | +1.4°C |
| Avg Low | 8.1°C | 8.0°C | 8.4°C | 9.1°C | 8.7°C | +0.6°C |
| Avg Rain | 76 mm | 62 mm | 61 mm | 61 mm | 52 mm | -23 mm |
December temperatures in Launceston have risen by about 1.1°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 0.3°C (1995) to a record high of 33.4°C (2019).
Rainfall in December is one of the drier months, averaging 63 mm, with a wettest year of 167 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.5°C per decade while lows rose 0.3°C per decade, widening the gap between day and night.
One of the best times to visit Launceston
December is one of the best times to visit Launceston. Expect days averaging 20.8°C and nights around 8.4°C (mean 14.6°C) — warmer than Launceston's yearly average — with moderate rainfall (63 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 | 21.5°C | 14.6°C | 7.8°C | 27.5°C | 2.9°C | 31 mm | 62% | 3.2 m/s | — |
| 2024 | 22.3°C | 15.9°C | 9.6°C | 27.1°C | 6.1°C | 66 mm | 69% | 3 m/s | 7.3 |
| 2023 | 23.3°C | 16.7°C | 10.2°C | 30.2°C | 6.8°C | 64 mm | 64% | 2.4 m/s | 6.6 |
| 2022 | 20.7°C | 14.4°C | 8.1°C | 30.4°C | 3.2°C | 53 mm | 71% | 2.6 m/s | 6.9 |
| 2021 | 22.2°C | 15.4°C | 8.6°C | 29.8°C | 4.6°C | 18 mm | 64% | 2.7 m/s | 7.5 |
| 2020 | 19.9°C | 13.9°C | 7.9°C | 29.1°C | 3.9°C | 82 mm | 71% | 2.9 m/s | 6.8 |
| 2019 | 23.1°C | 16.0°C | 8.9°C | 33.4°C | 4.0°C | 23 mm | 59% | 3.1 m/s | 7.6 |
| 2018 | 23.5°C | 17.2°C | 10.9°C | 29.8°C | 5.4°C | 67 mm | 67% | 2.6 m/s | 7.1 |
| 2017 | 22.7°C | 16.4°C | 10.0°C | 28.7°C | 6.5°C | 86 mm | 66% | 3.1 m/s | 7 |
| 2016 | 21.2°C | 15.1°C | 9.0°C | 30.2°C | 3.9°C | 76 mm | 72% | 2.8 m/s | 7.3 |
| 2015 🔥 | 24.9°C | 17.5°C | 10.1°C | 32.6°C | 4.6°C | 28 mm | 59% | 2.7 m/s | 7.7 |
| 2014 | 21.4°C | 15.4°C | 9.3°C | 26.3°C | 5.7°C | 62 mm | 70% | 2.7 m/s | 6.2 |
| 2013 | 19.9°C | 14.1°C | 8.2°C | 25.8°C | 2.6°C | 54 mm | 77% | 2.6 m/s | 6.8 |
| 2012 | 21.1°C | 14.7°C | 8.3°C | 25.3°C | 4.0°C | 65 mm | 69% | 2.8 m/s | 7.1 |
| 2011 | 20.9°C | 14.9°C | 8.9°C | 26.2°C | 3.0°C | 36 mm | 72% | 2.2 m/s | 6.8 |
| 2010 | 18.3°C | 13.0°C | 7.6°C | 24.5°C | 3.6°C | 114 mm | 78% | 3 m/s | 6.4 |
| 2009 | 20.6°C | 14.3°C | 8.0°C | 29.4°C | 4.2°C | 38 mm | 72% | 2.7 m/s | 7.1 |
| 2008 | 19.4°C | 13.3°C | 7.2°C | 25.4°C | 2.2°C | 62 mm | 69% | 3.1 m/s | 6.3 |
| 2007 | 21.3°C | 15.3°C | 9.3°C | 27.5°C | 4.9°C | 92 mm | 70% | 2.7 m/s | 6.4 |
| 2006 | 22.1°C | 15.0°C | 7.9°C | 29.5°C | 4.5°C | 34 mm | 60% | 2.9 m/s | 7.3 |
| 2005 | 19.3°C | 14.0°C | 8.7°C | 25.2°C | 5.6°C | 118 mm | 80% | 3.1 m/s | 6.8 |
| 2004 | 21.8°C | 15.3°C | 8.8°C | 27.0°C | 4.7°C | 40 mm | 68% | 2.6 m/s | 7.2 |
| 2003 | 21.9°C | 15.5°C | 9.2°C | 28.5°C | 5.4°C | 60 mm | 70% | 2.8 m/s | 7 |
| 2002 | 21.5°C | 15.3°C | 9.1°C | 28.3°C | 3.5°C | 54 mm | 69% | 2.8 m/s | 6.9 |
| 2001 | 17.4°C | 12.4°C | 7.3°C | 21.1°C | 2.5°C | 68 mm | 76% | 2.5 m/s | 6 |
| 2000 | 20.8°C | 14.5°C | 8.2°C | 28.7°C | 3.4°C | 40 mm | 67% | 2.9 m/s | 7.6 |
| 1999 | 21.8°C | 15.1°C | 8.5°C | 26.7°C | 3.3°C | 47 mm | 65% | 2.9 m/s | 7.2 |
| 1998 | 21.1°C | 14.7°C | 8.4°C | 27.5°C | 5.0°C | 74 mm | 73% | 2.7 m/s | 7 |
| 1997 | 20.4°C | 14.2°C | 8.0°C | 26.5°C | 4.3°C | 37 mm | 68% | 3 m/s | 7.5 |
| 1996 ❄️ | 17.9°C | 11.9°C | 5.9°C | 21.8°C | 1.6°C | 34 mm | 74% | 2.6 m/s | 7.1 |
| 1995 | 19.4°C | 13.1°C | 6.8°C | 26.6°C | 0.3°C | 64 mm | 70% | 2.7 m/s | 6.8 |
| 1994 | 22.8°C | 15.8°C | 8.7°C | 28.1°C | 2.8°C | 14 mm | 64% | 2.5 m/s | 7.6 |
| 1993 | 19.1°C | 13.5°C | 7.9°C | 24.9°C | 3.3°C | 136 mm | 76% | 3.1 m/s | 6.3 |
| 1992 | 18.7°C | 13.8°C | 8.9°C | 23.1°C | 5.7°C | 72 mm | 81% | 2.5 m/s | 6.2 |
| 1991 | 19.9°C | 14.1°C | 8.2°C | 26.4°C | 4.2°C | 77 mm | 74% | 2.2 m/s | 6.9 |
| 1990 | 20.0°C | 14.2°C | 8.4°C | 28.7°C | 4.0°C | 63 mm | 73% | 2.9 m/s | 6.7 |
| 1989 | 20.5°C | 14.3°C | 8.1°C | 26.3°C | 3.6°C | 58 mm | 71% | 2.7 m/s | 7.2 |
| 1988 | 20.4°C | 14.6°C | 8.7°C | 25.0°C | 3.6°C | 72 mm | 79% | 2.3 m/s | 7 |
| 1987 | 19.8°C | 13.5°C | 7.3°C | 26.1°C | 2.9°C | 52 mm | 69% | 2.5 m/s | 6.9 |
| 1986 | 18.6°C | 13.1°C | 7.6°C | 23.5°C | 4.5°C | 107 mm | 76% | 2.6 m/s | 6.6 |
| 1985 🌧️ | 19.2°C | 14.2°C | 9.2°C | 24.1°C | 4.5°C | 167 mm | 80% | 2.6 m/s | 5.7 |
| 1984 | 18.1°C | 12.1°C | 6.1°C | 23.6°C | 2.4°C | 92 mm | 75% | 3 m/s | 6.5 |
| 1983 | 21.4°C | 15.1°C | 8.8°C | 28.3°C | 4.3°C | 15 mm | 67% | 2.4 m/s | — |
| 1982 | 21.8°C | 14.9°C | 8.0°C | 29.7°C | 3.5°C | 82 mm | 64% | 2.9 m/s | — |
| 1981 | 21.6°C | 15.3°C | 8.9°C | 28.5°C | 5.4°C | 36 mm | 68% | 2.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 20.8°C with lows near 8.4°C (mean 14.6°C), based on 45 years of NASA POWER data.
December averages 63 mm of rainfall in Launceston, one of the drier months. The wettest on record was 167 mm in 1985.
The hottest December reached 33.4°C in 2019. The coldest dipped to 0.3°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.1°C. Daytime highs moved from 20.4°C to 22°C and overnight lows from 8.2°C to 8.9°C over the same span.
December is one of the warmer months of the year in Launceston and one of the drier months, so plan for around 20.8°C daytime highs and 8.4°C at night.
Not quite — December is the 9th coolest month in Launceston, averaging 14.6°C.
For December in Launceston, pack light layers you can adjust through the day, with typical highs of 20.8°C and lows of 8.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 70% — moderately humid.
Average wind speed in December is 2.7 m/s. The windiest December on record averaged 3.2 m/s (2025).
The wettest December on record was 1985 with 167 mm. On average, December sees 63 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 Launceston 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.
