December is one of the warmer months of the year in Broken Hill, with average highs near 33.3°C and lows around 17.2°C (mean 25.3°C). It is about average for rainfall, averaging 21 mm of rainfall and 33% relative humidity across the period.
December is one of the warmer months of the year in Broken Hill. Across 45 years of records, the warmest December in Broken Hill was 2019 — when the month averaged 28.8°C — while the coldest was 2010 at 22.1°C. Typical December days reach 33.3°C with nights near 17.2°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Broken Hill, averaging 21 mm of rainfall. The wettest December on record was 1992 with 140 mm, while the driest were 1991 and 2017 at 1 mm.
Relative humidity in Broken Hill during December averages 33%. The most humid December was 1992 at 54%, and the least humid was 1994 at 23%.
December receives about 8.3 kWh/m²/day of solar energy in Broken Hill. The sunniest December was 1994 at 9.1 kWh/m²/day, and the cloudiest was 2016 at 7.3.
Average wind speed in Broken Hill during December is 3.8 m/s. The windiest December was 1985 at 4.4 m/s, while the calmest were 1983 and 2010 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 25.0°C | 24.9°C | 25.2°C | 26.0°C | 25.3°C | +0.3°C |
| Avg High | 33.1°C | 32.8°C | 33.3°C | 33.8°C | 33.4°C | +0.3°C |
| Avg Low | 16.9°C | 16.9°C | 17.0°C | 18.1°C | 17.3°C | +0.4°C |
| Avg Rain | 27 mm | 32 mm | 17 mm | 16 mm | 12 mm | -15 mm |
December temperatures in Broken Hill have risen by about 0.6°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 7.7°C (2010) to a record high of 46.2°C (2019).
Rainfall in December is about average for rainfall, averaging 21 mm, with a wettest year of 140 mm.
A good time to visit Broken Hill
December is a good time to visit Broken Hill, with days averaging 33.3°C and nights around 17.2°C (mean 25.3°C, warmer than Broken Hill's yearly average) and low rainfall. November and March are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 34.3°C | 25.9°C | 17.6°C | 41.2°C | 9.1°C | 7 mm | 26% | 4 m/s | — |
| 2024 | 35.0°C | 26.7°C | 18.4°C | 44.7°C | 12.0°C | 18 mm | 34% | 3.7 m/s | 8.6 |
| 2023 | 34.6°C | 26.4°C | 18.1°C | 43.0°C | 13.1°C | 2 mm | 35% | 3.9 m/s | 8.2 |
| 2022 | 31.5°C | 23.9°C | 16.2°C | 39.3°C | 8.2°C | 15 mm | 43% | 3.8 m/s | 7.9 |
| 2021 | 33.3°C | 25.1°C | 17.0°C | 43.4°C | 9.3°C | 10 mm | 32% | 3.7 m/s | 8.7 |
| 2020 | 31.8°C | 24.1°C | 16.5°C | 39.1°C | 10.0°C | 19 mm | 32% | 4 m/s | 7.9 |
| 2019 🔥 | 37.2°C | 28.8°C | 20.4°C | 46.2°C | 10.5°C | 1 mm | 23% | 3.8 m/s | 8.7 |
| 2018 | 35.9°C | 27.9°C | 19.9°C | 44.4°C | 10.5°C | 4 mm | 30% | 3.8 m/s | 8.3 |
| 2017 | 34.4°C | 26.4°C | 18.5°C | 44.6°C | 11.0°C | 1 mm | 29% | 3.8 m/s | 8.1 |
| 2016 | 34.5°C | 27.0°C | 19.5°C | 41.5°C | 11.8°C | 5 mm | 33% | 3.8 m/s | 7.3 |
| 2015 | 34.7°C | 27.0°C | 19.2°C | 42.3°C | 10.4°C | 18 mm | 28% | 3.9 m/s | 7.9 |
| 2014 | 33.9°C | 25.9°C | 17.9°C | 40.5°C | 12.8°C | 11 mm | 29% | 3.7 m/s | 8.5 |
| 2013 | 33.7°C | 25.4°C | 17.0°C | 42.3°C | 9.8°C | 25 mm | 30% | 3.8 m/s | 8.4 |
| 2012 | 33.6°C | 25.7°C | 17.8°C | 40.6°C | 10.3°C | 12 mm | 29% | 4 m/s | 8.6 |
| 2011 | 31.0°C | 23.4°C | 15.8°C | 38.9°C | 9.5°C | 27 mm | 38% | 3.8 m/s | 8.1 |
| 2010 ❄️ | 29.6°C | 22.1°C | 14.6°C | 39.9°C | 7.7°C | 53 mm | 53% | 3.4 m/s | 8.2 |
| 2009 | 32.8°C | 24.4°C | 15.9°C | 41.2°C | 10.6°C | 17 mm | 35% | 3.7 m/s | 8.7 |
| 2008 | 31.3°C | 23.7°C | 16.0°C | 37.6°C | 10.0°C | 38 mm | 41% | 3.7 m/s | 7.8 |
| 2007 | 33.2°C | 25.5°C | 17.7°C | 41.9°C | 10.0°C | 12 mm | 33% | 3.7 m/s | 8.3 |
| 2006 | 33.2°C | 25.1°C | 17.0°C | 41.1°C | 9.3°C | 13 mm | 25% | 3.7 m/s | 8 |
| 2005 | 35.3°C | 26.4°C | 17.5°C | 44.9°C | 10.7°C | 4 mm | 29% | 4.2 m/s | 8.5 |
| 2004 | 31.8°C | 23.9°C | 16.0°C | 40.4°C | 10.5°C | 27 mm | 34% | 3.8 m/s | 8.4 |
| 2003 | 35.1°C | 26.8°C | 18.5°C | 42.1°C | 11.3°C | 20 mm | 35% | 3.5 m/s | 7.9 |
| 2002 | 33.8°C | 25.7°C | 17.7°C | 43.2°C | 9.4°C | 20 mm | 26% | 4 m/s | 8.1 |
| 2001 | 31.6°C | 23.7°C | 15.8°C | 39.7°C | 11.0°C | 3 mm | 32% | 4 m/s | 8 |
| 2000 | 34.4°C | 26.4°C | 18.3°C | 42.4°C | 11.4°C | 14 mm | 28% | 3.5 m/s | 8.3 |
| 1999 | 29.9°C | 22.8°C | 15.6°C | 39.1°C | 10.4°C | 25 mm | 40% | 4.1 m/s | 8.1 |
| 1998 | 34.2°C | 26.1°C | 18.0°C | 41.4°C | 10.9°C | 6 mm | 28% | 3.6 m/s | 8.8 |
| 1997 | 35.3°C | 27.1°C | 18.8°C | 41.7°C | 13.1°C | 15 mm | 29% | 3.7 m/s | 8.8 |
| 1996 | 33.2°C | 24.6°C | 16.0°C | 41.5°C | 9.6°C | 17 mm | 30% | 3.8 m/s | 8.4 |
| 1995 | 31.5°C | 23.4°C | 15.3°C | 42.1°C | 8.7°C | 28 mm | 29% | 3.8 m/s | 8.1 |
| 1994 | 36.0°C | 27.4°C | 18.9°C | 44.0°C | 11.6°C | 3 mm | 23% | 3.9 m/s | 9.1 |
| 1993 | 30.0°C | 22.8°C | 15.6°C | 42.6°C | 8.0°C | 87 mm | 46% | 4.3 m/s | 7.8 |
| 1992 🌧️ | 29.4°C | 22.6°C | 15.9°C | 34.7°C | 11.1°C | 140 mm | 54% | 3.7 m/s | 7.6 |
| 1991 | 32.1°C | 24.2°C | 16.2°C | 42.0°C | 9.0°C | 1 mm | 30% | 4 m/s | 8.7 |
| 1990 | 36.2°C | 27.5°C | 18.7°C | 45.1°C | 11.5°C | 2 mm | 27% | 4.2 m/s | 8.8 |
| 1989 | 34.5°C | 26.1°C | 17.7°C | 42.7°C | 11.6°C | 9 mm | 27% | 3.7 m/s | 8.9 |
| 1988 | 33.6°C | 26.1°C | 18.5°C | 41.0°C | 10.7°C | 43 mm | 39% | 3.8 m/s | 7.9 |
| 1987 | 33.5°C | 25.4°C | 17.3°C | 41.9°C | 9.2°C | 38 mm | 31% | 4.3 m/s | 8.2 |
| 1986 | 30.7°C | 22.6°C | 14.6°C | 42.8°C | 8.5°C | 37 mm | 40% | 3.9 m/s | 8.1 |
| 1985 | 31.7°C | 23.4°C | 15.1°C | 40.1°C | 10.7°C | 14 mm | 34% | 4.4 m/s | 8.7 |
| 1984 | 33.4°C | 25.0°C | 16.6°C | 41.2°C | 9.6°C | 2 mm | 26% | 3.9 m/s | 8.4 |
| 1983 | 33.3°C | 25.5°C | 17.7°C | 42.3°C | 8.8°C | 87 mm | 38% | 3.4 m/s | — |
| 1982 | 33.7°C | 25.8°C | 18.0°C | 41.8°C | 9.6°C | 1 mm | 26% | 3.7 m/s | — |
| 1981 | 33.5°C | 25.2°C | 16.8°C | 44.2°C | 9.9°C | 14 mm | 28% | 3.8 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 33.3°C with lows near 17.2°C (mean 25.3°C), based on 45 years of NASA POWER data.
December averages 21 mm of rainfall in Broken Hill, about average for rainfall. The wettest on record was 140 mm in 1992.
The hottest December reached 46.2°C in 2019. The coldest dipped to 7.7°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.6°C. Daytime highs moved from 33.1°C to 33.7°C and overnight lows from 16.8°C to 17.5°C over the same span.
December is one of the warmer months of the year in Broken Hill and about average for rainfall, so plan for around 33.3°C daytime highs and 17.2°C at night.
Not quite — December is the 10th coolest month in Broken Hill, averaging 25.3°C.
For December in Broken Hill, pack light, breathable clothing and sun protection, with typical highs of 33.3°C and lows of 17.2°C.
Relative humidity in December averages 33% — relatively dry.
Average wind speed in December is 3.8 m/s. The windiest December on record averaged 4.4 m/s (1985).
The wettest December on record was 1992 with 140 mm. On average, December sees 21 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 Broken Hill 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.
