December is one of the warmer months of the year in Ouyen, with average highs near 31.4°C and lows around 14.9°C (mean 23.2°C). It is about average for rainfall, averaging 28 mm of rainfall and 40% relative humidity across the period.
December is one of the warmer months of the year in Ouyen. Across 45 years of records, the warmest December in Ouyen was 2015 — when the month averaged 26.1°C — while the coldest was 2010 at 20.1°C. Typical December days reach 31.4°C with nights near 14.9°C. The long-term trend is warming, about 0.2°C per decade.
December is about average for rainfall in Ouyen, averaging 28 mm of rainfall. The wettest December on record was 2010 with 117 mm, while the driest was 1984 at 1 mm.
Relative humidity in Ouyen during December averages 40%. The most humid December was 2010 at 61%, and the least humid was 1994 at 27%.
December receives about 7.9 kWh/m²/day of solar energy in Ouyen. The sunniest December was 1994 at 8.6 kWh/m²/day, and the cloudiest was 1992 at 6.7.
Average wind speed in Ouyen during December is 3.7 m/s. The windiest December was 2005 at 4.2 m/s, while the calmest was 2010 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.8°C | 22.8°C | 23.1°C | 23.8°C | 23.0°C | +0.2°C |
| Avg High | 31.0°C | 31.1°C | 31.6°C | 32.0°C | 31.4°C | +0.4°C |
| Avg Low | 14.5°C | 14.6°C | 14.7°C | 15.7°C | 14.5°C | 0°C |
| Avg Rain | 25 mm | 24 mm | 30 mm | 33 mm | 28 mm | +3 mm |
December temperatures in Ouyen have risen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 7.1°C (1987) to a record high of 47.6°C (2019).
Rainfall in December is about average for rainfall, averaging 28 mm, with a wettest year of 117 mm.
One of the best times to visit Ouyen
December is one of the best times to visit Ouyen. Expect days averaging 31.4°C and nights around 14.9°C (mean 23.2°C) — warmer than Ouyen's yearly average — with low rainfall (28 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 | 32.4°C | 23.5°C | 14.5°C | 43.9°C | 8.3°C | 16 mm | 34% | 3.7 m/s | — |
| 2024 | 33.1°C | 24.4°C | 15.6°C | 45.1°C | 10.9°C | 19 mm | 41% | 3.5 m/s | 8.3 |
| 2023 | 31.3°C | 23.4°C | 15.6°C | 42.1°C | 9.7°C | 64 mm | 49% | 3.6 m/s | 7.2 |
| 2022 | 29.7°C | 21.6°C | 13.4°C | 40.7°C | 7.7°C | 9 mm | 47% | 3.4 m/s | 8.1 |
| 2021 | 32.1°C | 23.5°C | 14.8°C | 39.2°C | 8.3°C | 10 mm | 38% | 3.5 m/s | 8.5 |
| 2020 | 29.9°C | 21.5°C | 13.2°C | 39.2°C | 8.8°C | 50 mm | 41% | 3.9 m/s | 8 |
| 2019 | 34.7°C | 25.7°C | 16.7°C | 47.6°C | 9.9°C | 5 mm | 31% | 3.8 m/s | 8.3 |
| 2018 | 33.3°C | 25.4°C | 17.6°C | 43.3°C | 11.3°C | 51 mm | 41% | 3.4 m/s | 7.4 |
| 2017 | 30.8°C | 22.9°C | 15.1°C | 40.7°C | 8.4°C | 54 mm | 45% | 3.3 m/s | 7.5 |
| 2016 | 31.8°C | 23.7°C | 15.7°C | 40.5°C | 9.1°C | 15 mm | 40% | 3.5 m/s | 7.8 |
| 2015 🔥 | 34.7°C | 26.1°C | 17.5°C | 43.4°C | 9.0°C | 6 mm | 28% | 3.6 m/s | 8.3 |
| 2014 | 32.0°C | 24.0°C | 15.9°C | 38.4°C | 10.8°C | 11 mm | 36% | 3.5 m/s | 8.1 |
| 2013 | 32.5°C | 23.9°C | 15.2°C | 43.1°C | 7.8°C | 29 mm | 36% | 3.6 m/s | 7.6 |
| 2012 | 32.5°C | 24.0°C | 15.5°C | 41.9°C | 11.0°C | 7 mm | 34% | 3.9 m/s | 7.9 |
| 2011 | 30.6°C | 22.7°C | 14.8°C | 38.9°C | 8.6°C | 34 mm | 42% | 3.5 m/s | 8.3 |
| 2010 ❄️ 🌧️ | 26.9°C | 20.1°C | 13.3°C | 40.9°C | 8.5°C | 117 mm | 61% | 3.2 m/s | 7.5 |
| 2009 | 31.1°C | 22.5°C | 13.8°C | 40.6°C | 8.8°C | 23 mm | 42% | 3.4 m/s | 8.4 |
| 2008 | 29.1°C | 21.2°C | 13.4°C | 37.1°C | 9.1°C | 53 mm | 47% | 3.8 m/s | 7.5 |
| 2007 | 32.1°C | 23.9°C | 15.7°C | 43.7°C | 8.9°C | 30 mm | 40% | 3.4 m/s | 8 |
| 2006 | 32.1°C | 23.3°C | 14.6°C | 43.2°C | 8.3°C | 23 mm | 30% | 3.8 m/s | 8.3 |
| 2005 | 32.5°C | 23.7°C | 14.8°C | 46.5°C | 10.5°C | 11 mm | 38% | 4.2 m/s | 7.9 |
| 2004 | 30.4°C | 22.6°C | 14.7°C | 40.3°C | 8.9°C | 58 mm | 45% | 3.5 m/s | 7.9 |
| 2003 | 33.6°C | 25.3°C | 17.1°C | 42.0°C | 10.4°C | 38 mm | 40% | 3.4 m/s | 7.8 |
| 2002 | 33.1°C | 24.2°C | 15.3°C | 43.7°C | 7.3°C | 38 mm | 34% | 4.1 m/s | 7.8 |
| 2001 | 28.9°C | 20.9°C | 12.9°C | 38.3°C | 8.7°C | 3 mm | 42% | 3.9 m/s | 7.6 |
| 2000 | 32.8°C | 23.8°C | 14.9°C | 41.0°C | 9.1°C | 26 mm | 36% | 3.4 m/s | 8.5 |
| 1999 | 29.4°C | 21.6°C | 13.9°C | 38.4°C | 8.6°C | 31 mm | 45% | 3.8 m/s | 7.9 |
| 1998 | 32.1°C | 23.6°C | 15.2°C | 43.0°C | 9.2°C | 9 mm | 39% | 3.4 m/s | 8.5 |
| 1997 | 32.5°C | 24.2°C | 15.9°C | 39.8°C | 11.1°C | 9 mm | 36% | 3.5 m/s | 8.2 |
| 1996 | 30.8°C | 22.1°C | 13.4°C | 40.2°C | 8.9°C | 8 mm | 35% | 3.9 m/s | 7.9 |
| 1995 | 30.0°C | 21.5°C | 13.0°C | 38.2°C | 7.4°C | 23 mm | 38% | 3.8 m/s | 7.5 |
| 1994 | 34.7°C | 25.4°C | 16.1°C | 42.6°C | 8.7°C | 4 mm | 27% | 3.8 m/s | 8.6 |
| 1993 | 28.9°C | 21.1°C | 13.3°C | 37.8°C | 7.5°C | 48 mm | 47% | 4.1 m/s | 7.4 |
| 1992 | 28.3°C | 21.7°C | 15.1°C | 35.4°C | 10.0°C | 96 mm | 58% | 3.5 m/s | 6.7 |
| 1991 | 30.5°C | 22.3°C | 14.1°C | 42.2°C | 8.8°C | 5 mm | 39% | 3.8 m/s | 7.7 |
| 1990 | 33.6°C | 24.9°C | 16.1°C | 43.5°C | 9.0°C | 7 mm | 35% | 3.9 m/s | 7.8 |
| 1989 | 32.1°C | 23.5°C | 14.9°C | 40.4°C | 9.4°C | 9 mm | 35% | 3.6 m/s | 8 |
| 1988 | 31.8°C | 24.1°C | 16.4°C | 39.4°C | 9.8°C | 19 mm | 44% | 3.5 m/s | 7.5 |
| 1987 | 31.1°C | 22.6°C | 14.1°C | 40.9°C | 7.1°C | 44 mm | 41% | 3.8 m/s | 8.1 |
| 1986 | 28.1°C | 20.4°C | 12.7°C | 40.2°C | 7.6°C | 40 mm | 47% | 4 m/s | 7.5 |
| 1985 | 28.8°C | 21.1°C | 13.5°C | 37.6°C | 10.3°C | 39 mm | 47% | 4.1 m/s | 7.5 |
| 1984 | 31.0°C | 22.5°C | 13.9°C | 41.2°C | 8.0°C | 1 mm | 36% | 4.1 m/s | 8.1 |
| 1983 | 31.8°C | 23.5°C | 15.2°C | 41.9°C | 9.2°C | 67 mm | 41% | 3.4 m/s | — |
| 1982 | 32.5°C | 24.2°C | 15.9°C | 39.5°C | 9.8°C | 3 mm | 31% | 3.6 m/s | — |
| 1981 | 31.6°C | 22.9°C | 14.2°C | 43.3°C | 8.6°C | 5 mm | 36% | 4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 31.4°C with lows near 14.9°C (mean 23.2°C), based on 45 years of NASA POWER data.
December averages 28 mm of rainfall in Ouyen, about average for rainfall. The wettest on record was 117 mm in 2010.
The hottest December reached 47.6°C in 2019. The coldest dipped to 7.1°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.5°C. Daytime highs moved from 31.1°C to 31.7°C and overnight lows from 14.5°C to 14.8°C over the same span.
December is one of the warmer months of the year in Ouyen and about average for rainfall, so plan for around 31.4°C daytime highs and 14.9°C at night.
Not quite — December is the 10th coolest month in Ouyen, averaging 23.2°C.
For December in Ouyen, pack light, breathable clothing and sun protection, with typical highs of 31.4°C and lows of 14.9°C.
Relative humidity in December averages 40% — relatively dry.
Average wind speed in December is 3.7 m/s. The windiest December on record averaged 4.2 m/s (2005).
The wettest December on record was 2010 with 117 mm. On average, December sees 28 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 Ouyen 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.
