December is one of the warmer months of the year in Smithton, with average highs near 17.3°C and lows around 10.3°C (mean 13.8°C). It is one of the drier months, averaging 76 mm of rainfall and 78% relative humidity across the period.
December is one of the warmer months of the year in Smithton. Across 45 years of records, the warmest December in Smithton was 2015 — when the month averaged 16°C — while the coldest was 1996 at 11.8°C. Typical December days reach 17.3°C with nights near 10.3°C. The long-term trend is warming, about 0.2°C per decade.
December is one of the drier months in Smithton, averaging 76 mm of rainfall. The wettest December on record was 1986 with 161 mm, while the driest was 2021 at 22 mm.
Relative humidity in Smithton during December averages 78%. The most humid December was 1992 at 82%, and the least humid was 2015 at 71%.
December receives about 6.9 kWh/m²/day of solar energy in Smithton. The sunniest December was 2000 at 7.8 kWh/m²/day, and the cloudiest was 1992 at 6.1.
Average wind speed in Smithton during December is 3 m/s. The windiest December was 2005 at 3.6 m/s, while the calmest were 1994, 2014 and 2023, among others at 2.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 13.2°C | 13.7°C | 14.5°C | 14.1°C | +0.4°C |
| Avg High | 17.3°C | 16.7°C | 17.0°C | 18.0°C | 17.7°C | +0.4°C |
| Avg Low | 10.2°C | 9.7°C | 10.3°C | 10.9°C | 10.5°C | +0.3°C |
| Avg Rain | 82 mm | 77 mm | 84 mm | 72 mm | 60 mm | -22 mm |
December temperatures in Smithton have risen by about 0.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 5.2°C (1995) to a record high of 28.2°C (2015).
Rainfall in December is one of the drier months, averaging 76 mm, with a wettest year of 161 mm.
One of the best times to visit Smithton
December is one of the best times to visit Smithton. Expect days averaging 17.3°C and nights around 10.3°C (mean 13.8°C) — warmer than Smithton's yearly average — with moderate rainfall (76 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 | 16.3°C | 12.9°C | 9.4°C | 23.1°C | 7.3°C | 59 mm | 77% | 3.2 m/s | — |
| 2024 | 18.1°C | 14.9°C | 11.7°C | 23.9°C | 9.0°C | 89 mm | 78% | 3.2 m/s | 6.6 |
| 2023 | 18.9°C | 15.1°C | 11.3°C | 25.3°C | 7.7°C | 61 mm | 74% | 2.5 m/s | 6.6 |
| 2022 | 18.4°C | 14.4°C | 10.3°C | 25.5°C | 6.4°C | 39 mm | 75% | 2.7 m/s | 7.4 |
| 2021 | 17.8°C | 13.9°C | 10.1°C | 23.5°C | 6.7°C | 22 mm | 74% | 2.9 m/s | 7.7 |
| 2020 | 16.6°C | 13.3°C | 10.0°C | 23.2°C | 6.9°C | 90 mm | 77% | 3.3 m/s | 6.4 |
| 2019 | 17.6°C | 13.8°C | 10.1°C | 28.1°C | 7.3°C | 47 mm | 75% | 3.4 m/s | 7.1 |
| 2018 | 19.8°C | 15.8°C | 11.9°C | 25.0°C | 8.7°C | 73 mm | 75% | 2.9 m/s | 6.8 |
| 2017 | 18.7°C | 15.3°C | 12.0°C | 24.5°C | 9.0°C | 56 mm | 75% | 3.1 m/s | 6.5 |
| 2016 | 17.2°C | 14.0°C | 10.7°C | 24.6°C | 7.0°C | 86 mm | 80% | 3 m/s | 6.8 |
| 2015 🔥 | 20.4°C | 16.0°C | 11.6°C | 28.2°C | 7.9°C | 51 mm | 71% | 2.9 m/s | 7.6 |
| 2014 | 17.6°C | 14.3°C | 10.9°C | 20.2°C | 9.1°C | 80 mm | 80% | 2.5 m/s | 6.6 |
| 2013 | 16.8°C | 13.6°C | 10.3°C | 24.0°C | 7.5°C | 81 mm | 81% | 3.1 m/s | 6.5 |
| 2012 | 17.0°C | 13.7°C | 10.3°C | 21.5°C | 7.4°C | 94 mm | 80% | 3.1 m/s | 6.9 |
| 2011 | 18.2°C | 14.6°C | 11.0°C | 22.8°C | 7.1°C | 38 mm | 78% | 2.6 m/s | 7.5 |
| 2010 | 16.4°C | 13.4°C | 10.4°C | 21.7°C | 7.2°C | 110 mm | 81% | 3.2 m/s | 6.4 |
| 2009 | 17.2°C | 13.7°C | 10.2°C | 24.4°C | 7.5°C | 72 mm | 79% | 3 m/s | 6.9 |
| 2008 | 15.7°C | 12.5°C | 9.3°C | 19.6°C | 5.5°C | 117 mm | 79% | 3.1 m/s | 6.6 |
| 2007 | 17.8°C | 14.6°C | 11.3°C | 22.3°C | 8.7°C | 118 mm | 78% | 3.2 m/s | 6.7 |
| 2006 | 16.6°C | 12.9°C | 9.2°C | 22.8°C | 6.9°C | 47 mm | 75% | 3.3 m/s | 7.2 |
| 2005 | 16.8°C | 13.9°C | 11.0°C | 22.2°C | 8.1°C | 141 mm | 81% | 3.6 m/s | 6.6 |
| 2004 | 18.0°C | 14.6°C | 11.1°C | 21.8°C | 7.6°C | 49 mm | 79% | 2.9 m/s | 7.2 |
| 2003 | 17.8°C | 14.4°C | 10.9°C | 23.3°C | 6.4°C | 67 mm | 79% | 3.1 m/s | 6.8 |
| 2002 | 17.2°C | 13.8°C | 10.3°C | 23.1°C | 6.8°C | 77 mm | 80% | 3 m/s | 7 |
| 2001 | 15.2°C | 12.2°C | 9.3°C | 19.8°C | 7.0°C | 89 mm | 80% | 2.7 m/s | 7 |
| 2000 | 17.3°C | 14.0°C | 10.6°C | 23.2°C | 6.9°C | 67 mm | 75% | 3.1 m/s | 7.8 |
| 1999 | 18.0°C | 14.2°C | 10.4°C | 24.0°C | 6.9°C | 70 mm | 76% | 3 m/s | 7.4 |
| 1998 | 17.3°C | 13.9°C | 10.5°C | 24.3°C | 7.3°C | 97 mm | 80% | 3 m/s | 6.9 |
| 1997 | 16.4°C | 13.0°C | 9.6°C | 21.3°C | 7.4°C | 70 mm | 79% | 2.9 m/s | 7 |
| 1996 ❄️ | 15.3°C | 11.8°C | 8.2°C | 19.2°C | 5.4°C | 48 mm | 77% | 2.7 m/s | 7.5 |
| 1995 | 15.8°C | 12.2°C | 8.6°C | 20.9°C | 5.2°C | 63 mm | 78% | 3.1 m/s | 7.1 |
| 1994 | 17.8°C | 13.8°C | 9.9°C | 22.5°C | 6.4°C | 27 mm | 78% | 2.5 m/s | 7.3 |
| 1993 | 16.1°C | 12.8°C | 9.4°C | 21.8°C | 5.8°C | 138 mm | 82% | 3.3 m/s | 6.6 |
| 1992 | 17.4°C | 14.1°C | 10.7°C | 20.9°C | 6.9°C | 87 mm | 82% | 2.7 m/s | 6.1 |
| 1991 | 16.6°C | 13.3°C | 9.9°C | 21.3°C | 6.6°C | 81 mm | 82% | 2.5 m/s | 6.7 |
| 1990 | 16.7°C | 13.3°C | 10.0°C | 23.3°C | 6.3°C | 86 mm | 80% | 2.9 m/s | 6.6 |
| 1989 | 17.6°C | 14.0°C | 10.5°C | 22.0°C | 7.4°C | 65 mm | 78% | 3 m/s | 7.4 |
| 1988 | 18.0°C | 14.2°C | 10.5°C | 23.6°C | 7.2°C | 74 mm | 80% | 2.6 m/s | 6.8 |
| 1987 | 16.5°C | 12.9°C | 9.3°C | 21.2°C | 6.1°C | 53 mm | 78% | 2.7 m/s | 7.1 |
| 1986 🌧️ | 16.1°C | 12.9°C | 9.7°C | 20.4°C | 6.2°C | 161 mm | 80% | 3.2 m/s | 6.5 |
| 1985 | 17.6°C | 14.6°C | 11.7°C | 21.9°C | 8.4°C | 141 mm | 82% | 3 m/s | 6.6 |
| 1984 | 15.9°C | 12.7°C | 9.5°C | 21.0°C | 6.8°C | 117 mm | 79% | 3.2 m/s | 6.6 |
| 1983 | 18.2°C | 14.5°C | 10.7°C | 24.7°C | 7.4°C | 25 mm | 75% | 2.7 m/s | — |
| 1982 | 17.7°C | 13.8°C | 9.9°C | 24.4°C | 6.4°C | 55 mm | 74% | 2.7 m/s | — |
| 1981 | 17.7°C | 13.9°C | 10.1°C | 22.5°C | 6.8°C | 45 mm | 77% | 2.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 17.3°C with lows near 10.3°C (mean 13.8°C), based on 45 years of NASA POWER data.
December averages 76 mm of rainfall in Smithton, one of the drier months. The wettest on record was 161 mm in 1986.
The hottest December reached 28.2°C in 2015. The coldest dipped to 5.2°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.3°C. Daytime highs moved from 17.4°C to 17.9°C and overnight lows from 10.4°C to 10.6°C over the same span.
December is one of the warmer months of the year in Smithton and one of the drier months, so plan for around 17.3°C daytime highs and 10.3°C at night.
Not quite — December is the 9th coolest month in Smithton, averaging 13.8°C.
For December in Smithton, pack light layers you can adjust through the day, with typical highs of 17.3°C and lows of 10.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 78% — quite humid.
Average wind speed in December is 3 m/s. The windiest December on record averaged 3.6 m/s (2005).
The wettest December on record was 1986 with 161 mm. On average, December sees 76 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 Smithton 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.
