December is one of the warmer months of the year in Cowra, with average highs near 29.3°C and lows around 14°C (mean 21.7°C). It is about average for rainfall, averaging 58 mm of rainfall and 49% relative humidity across the period.
December is one of the warmer months of the year in Cowra. Across 45 years of records, the warmest December in Cowra was 2019 — when the month averaged 25°C — while the coldest was 2010 at 18.6°C. Typical December days reach 29.3°C with nights near 14°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Cowra, averaging 58 mm of rainfall. The wettest December on record was 2010 with 158 mm, while the driest was 2019 at 6 mm.
Relative humidity in Cowra during December averages 49%. The most humid December was 2010 at 73%, and the least humid was 2019 at 31%.
December receives about 7.8 kWh/m²/day of solar energy in Cowra. The sunniest December was 1994 at 8.6 kWh/m²/day, and the cloudiest was 1992 at 6.7.
Average wind speed in Cowra during December is 2.5 m/s. The windiest December was 1984 at 3.1 m/s, while the calmest was 2011 at 2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.2°C | 21.3°C | 22.1°C | 22.3°C | 21.4°C | +0.2°C |
| Avg High | 28.9°C | 28.9°C | 30.0°C | 29.8°C | 28.7°C | -0.2°C |
| Avg Low | 13.5°C | 13.6°C | 14.2°C | 14.8°C | 14.0°C | +0.5°C |
| Avg Rain | 56 mm | 60 mm | 49 mm | 65 mm | 61 mm | +5 mm |
December temperatures in Cowra have risen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 3.7°C (2025) to a record high of 42.4°C (2019).
Rainfall in December is about average for rainfall, averaging 58 mm, with a wettest year of 158 mm.
One of the best times to visit Cowra
December is one of the best times to visit Cowra. Expect days averaging 29.3°C and nights around 14°C (mean 21.7°C) — warmer than Cowra's yearly average — with moderate rainfall (58 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 | 30.6°C | 22.2°C | 13.8°C | 39.2°C | 3.7°C | 40 mm | 44% | 2.5 m/s | — |
| 2024 | 29.9°C | 22.8°C | 15.6°C | 36.3°C | 7.9°C | 64 mm | 53% | 2.2 m/s | 8.3 |
| 2023 | 30.3°C | 23.1°C | 15.9°C | 39.2°C | 11.1°C | 75 mm | 55% | 2.4 m/s | 7.7 |
| 2022 | 26.1°C | 18.7°C | 11.4°C | 34.9°C | 4.3°C | 40 mm | 58% | 2.4 m/s | 7.9 |
| 2021 | 27.0°C | 20.3°C | 13.6°C | 32.2°C | 7.5°C | 68 mm | 64% | 2.1 m/s | 7.9 |
| 2020 | 28.4°C | 21.1°C | 13.7°C | 39.1°C | 7.2°C | 76 mm | 54% | 2.6 m/s | 7.5 |
| 2019 🔥 | 33.8°C | 25.0°C | 16.3°C | 42.4°C | 6.0°C | 6 mm | 31% | 2.6 m/s | 8.4 |
| 2018 | 31.8°C | 23.7°C | 15.7°C | 39.5°C | 7.8°C | 47 mm | 47% | 2.3 m/s | 8 |
| 2017 | 30.0°C | 22.8°C | 15.6°C | 39.8°C | 9.3°C | 91 mm | 56% | 2.3 m/s | 7.4 |
| 2016 | 30.6°C | 23.1°C | 15.7°C | 35.4°C | 9.0°C | 73 mm | 52% | 2.5 m/s | 7.3 |
| 2015 | 30.6°C | 22.6°C | 14.5°C | 37.7°C | 8.8°C | 54 mm | 45% | 2.4 m/s | 7.7 |
| 2014 | 29.5°C | 22.4°C | 15.3°C | 36.0°C | 10.1°C | 82 mm | 52% | 2.5 m/s | 7.5 |
| 2013 | 31.1°C | 22.9°C | 14.6°C | 39.4°C | 7.1°C | 26 mm | 40% | 2.4 m/s | 8.2 |
| 2012 | 30.8°C | 22.8°C | 14.8°C | 36.8°C | 7.3°C | 34 mm | 42% | 2.6 m/s | 8 |
| 2011 | 25.4°C | 18.8°C | 12.3°C | 30.7°C | 5.7°C | 82 mm | 64% | 2 m/s | 7.4 |
| 2010 ❄️ 🌧️ | 24.6°C | 18.6°C | 12.7°C | 33.1°C | 5.8°C | 158 mm | 73% | 2.4 m/s | 7.2 |
| 2009 | 30.4°C | 22.5°C | 14.5°C | 39.5°C | 7.7°C | 98 mm | 46% | 2.5 m/s | 7.7 |
| 2008 | 27.9°C | 20.7°C | 13.4°C | 33.5°C | 7.9°C | 67 mm | 50% | 2.7 m/s | 7.7 |
| 2007 | 28.1°C | 21.0°C | 14.0°C | 36.3°C | 8.7°C | 98 mm | 60% | 2.3 m/s | 7.2 |
| 2006 | 31.2°C | 23.1°C | 15.1°C | 37.2°C | 4.7°C | 23 mm | 39% | 2.6 m/s | 7.5 |
| 2005 | 30.6°C | 22.2°C | 13.8°C | 40.8°C | 8.0°C | 27 mm | 42% | 2.8 m/s | 8.5 |
| 2004 | 28.6°C | 20.9°C | 13.2°C | 35.6°C | 6.4°C | 79 mm | 54% | 2.4 m/s | 7.8 |
| 2003 | 30.9°C | 23.0°C | 15.1°C | 37.5°C | 8.2°C | 56 mm | 51% | 2.3 m/s | 7.7 |
| 2002 | 31.3°C | 23.1°C | 14.9°C | 39.8°C | 6.1°C | 27 mm | 39% | 2.6 m/s | 7.5 |
| 2001 | 29.7°C | 21.7°C | 13.7°C | 38.0°C | 7.3°C | 9 mm | 34% | 2.7 m/s | 7.5 |
| 2000 | 31.1°C | 22.7°C | 14.4°C | 37.4°C | 8.0°C | 9 mm | 44% | 2.3 m/s | 8.4 |
| 1999 | 26.8°C | 19.8°C | 12.8°C | 34.3°C | 7.6°C | 140 mm | 56% | 2.3 m/s | 7.4 |
| 1998 | 30.5°C | 22.4°C | 14.3°C | 36.4°C | 8.4°C | 22 mm | 48% | 2.3 m/s | 8.1 |
| 1997 | 32.4°C | 24.1°C | 15.8°C | 39.1°C | 11.5°C | 30 mm | 38% | 2.5 m/s | 8.2 |
| 1996 | 28.3°C | 20.5°C | 12.6°C | 36.0°C | 7.7°C | 60 mm | 48% | 2.7 m/s | 7.8 |
| 1995 | 26.8°C | 19.3°C | 11.9°C | 36.2°C | 6.5°C | 36 mm | 53% | 2.5 m/s | 8 |
| 1994 | 32.3°C | 23.5°C | 14.7°C | 39.7°C | 6.0°C | 31 mm | 43% | 2.5 m/s | 8.6 |
| 1993 | 27.4°C | 20.0°C | 12.6°C | 36.4°C | 6.7°C | 58 mm | 55% | 2.7 m/s | 7.3 |
| 1992 | 25.0°C | 18.9°C | 12.8°C | 31.6°C | 5.6°C | 131 mm | 68% | 2.4 m/s | 6.7 |
| 1991 | 27.1°C | 19.9°C | 12.7°C | 37.8°C | 6.1°C | 83 mm | 52% | 2.8 m/s | 7.2 |
| 1990 | 32.7°C | 24.1°C | 15.5°C | 39.3°C | 7.8°C | 12 mm | 38% | 2.7 m/s | 8.3 |
| 1989 | 30.3°C | 22.1°C | 13.9°C | 37.3°C | 8.3°C | 28 mm | 43% | 2.8 m/s | 8.2 |
| 1988 | 29.0°C | 21.9°C | 14.9°C | 34.4°C | 8.0°C | 140 mm | 61% | 2.5 m/s | 7.5 |
| 1987 | 30.0°C | 21.8°C | 13.5°C | 37.8°C | 4.8°C | 47 mm | 45% | 2.8 m/s | 7.4 |
| 1986 | 27.6°C | 19.7°C | 11.7°C | 35.4°C | 5.6°C | 35 mm | 47% | 2.7 m/s | 8.2 |
| 1985 | 25.8°C | 19.2°C | 12.5°C | 33.7°C | 7.4°C | 74 mm | 58% | 2.7 m/s | 7.6 |
| 1984 | 28.3°C | 20.3°C | 12.3°C | 37.4°C | 6.5°C | 22 mm | 41% | 3.1 m/s | 8.3 |
| 1983 | 27.7°C | 20.4°C | 13.2°C | 36.2°C | 5.8°C | 114 mm | 59% | 2.3 m/s | — |
| 1982 | 31.6°C | 23.5°C | 15.5°C | 37.7°C | 7.4°C | 12 mm | 35% | 2.6 m/s | — |
| 1981 | 29.8°C | 21.7°C | 13.7°C | 36.2°C | 8.2°C | 30 mm | 43% | 2.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 29.3°C with lows near 14°C (mean 21.7°C), based on 45 years of NASA POWER data.
December averages 58 mm of rainfall in Cowra, about average for rainfall. The wettest on record was 158 mm in 2010.
The hottest December reached 42.4°C in 2019. The coldest dipped to 3.7°C in 2025.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.4°C. Daytime highs moved from 28.6°C to 28.8°C and overnight lows from 13.4°C to 14.1°C over the same span.
December is one of the warmer months of the year in Cowra and about average for rainfall, so plan for around 29.3°C daytime highs and 14°C at night.
Not quite — December is the 10th coolest month in Cowra, averaging 21.7°C.
For December in Cowra, pack light layers you can adjust through the day, with typical highs of 29.3°C and lows of 14°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 49% — relatively dry.
Average wind speed in December is 2.5 m/s. The windiest December on record averaged 3.1 m/s (1984).
The wettest December on record was 2010 with 158 mm. On average, December sees 58 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 Cowra 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.
