December is one of the warmer months of the year in Leonora, with average highs near 36°C and lows around 18.9°C (mean 27.5°C). It is about average for rainfall, averaging 23 mm of rainfall and 30% relative humidity across the period.
December is one of the warmer months of the year in Leonora. Across 45 years of records, the warmest December in Leonora was 2019 — when the month averaged 31.3°C — while the coldest was 1988 at 24.2°C. Typical December days reach 36°C with nights near 18.9°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Leonora, averaging 23 mm of rainfall. The wettest December on record was 1988 with 76 mm, while the driest was 1985 at 0 mm.
Relative humidity in Leonora during December averages 30%. The most humid December was 2011 at 42%, and the least humid was 2005 at 22%.
December receives about 8.3 kWh/m²/day of solar energy in Leonora. The sunniest December was 1985 at 9.2 kWh/m²/day, and the cloudiest was 2011 at 7.2.
Average wind speed in Leonora during December is 4.1 m/s. The windiest December was 2023 at 4.7 m/s, while the calmest was 1982 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.1°C | 27.1°C | 27.3°C | 27.7°C | 28.3°C | +1.2°C |
| Avg High | 35.6°C | 35.6°C | 35.9°C | 36.2°C | 36.9°C | +1.3°C |
| Avg Low | 18.5°C | 18.5°C | 18.7°C | 19.2°C | 19.7°C | +1.2°C |
| Avg Rain | 27 mm | 23 mm | 22 mm | 26 mm | 14 mm | -13 mm |
December temperatures in Leonora have risen by about 1.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 10.4°C (1988) to a record high of 46.4°C (1997).
Rainfall in December is about average for rainfall, averaging 23 mm, with a wettest year of 76 mm.
A good time to visit Leonora
December is a good time to visit Leonora, with days averaging 36°C and nights around 18.9°C (mean 27.5°C, warmer than Leonora's yearly average) and low rainfall. October and April 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 | 37.7°C | 28.8°C | 19.9°C | 43.4°C | 12.3°C | 13 mm | 26% | 4.4 m/s | — |
| 2024 | 37.2°C | 29.0°C | 20.8°C | 41.8°C | 14.2°C | 46 mm | 35% | 3.6 m/s | 8.5 |
| 2023 | 38.2°C | 29.3°C | 20.3°C | 44.4°C | 10.9°C | 5 mm | 26% | 4.7 m/s | 8.4 |
| 2022 | 36.1°C | 27.5°C | 19.0°C | 42.5°C | 14.5°C | 1 mm | 27% | 4.4 m/s | 8.4 |
| 2021 | 37.0°C | 28.2°C | 19.4°C | 43.4°C | 14.7°C | 11 mm | 26% | 4.5 m/s | 8.7 |
| 2020 | 35.4°C | 27.0°C | 18.6°C | 43.2°C | 12.4°C | 11 mm | 28% | 4.5 m/s | 8.4 |
| 2019 🔥 | 39.6°C | 31.3°C | 22.9°C | 45.8°C | 13.2°C | 5 mm | 26% | 3.7 m/s | 8.1 |
| 2018 | 35.9°C | 27.3°C | 18.7°C | 44.0°C | 14.1°C | 47 mm | 35% | 4 m/s | 8.5 |
| 2017 | 36.2°C | 27.8°C | 19.5°C | 43.8°C | 13.4°C | 14 mm | 29% | 4.3 m/s | 7.8 |
| 2016 | 36.1°C | 27.3°C | 18.6°C | 42.6°C | 12.6°C | 17 mm | 29% | 4.3 m/s | 8.6 |
| 2015 | 36.8°C | 27.8°C | 18.8°C | 44.5°C | 12.2°C | 35 mm | 30% | 4.3 m/s | 8.7 |
| 2014 | 36.7°C | 27.6°C | 18.5°C | 43.6°C | 14.2°C | 6 mm | 29% | 4.3 m/s | 8.7 |
| 2013 | 36.3°C | 27.7°C | 19.0°C | 45.3°C | 11.8°C | 38 mm | 30% | 4 m/s | 8.1 |
| 2012 | 36.0°C | 27.9°C | 19.8°C | 42.2°C | 12.5°C | 26 mm | 35% | 3.8 m/s | 7.6 |
| 2011 | 33.1°C | 25.4°C | 17.7°C | 43.0°C | 12.9°C | 34 mm | 42% | 3.9 m/s | 7.2 |
| 2010 | 35.5°C | 27.1°C | 18.6°C | 44.8°C | 13.0°C | 34 mm | 32% | 4.2 m/s | 7.6 |
| 2009 | 37.2°C | 28.3°C | 19.4°C | 43.4°C | 11.7°C | 16 mm | 28% | 4.1 m/s | 8.3 |
| 2008 | 35.6°C | 27.0°C | 18.5°C | 40.9°C | 11.3°C | 11 mm | 36% | 3.9 m/s | 8.5 |
| 2007 | 33.5°C | 25.4°C | 17.3°C | 42.7°C | 12.2°C | 37 mm | 33% | 4 m/s | 7.9 |
| 2006 | 35.3°C | 27.0°C | 18.8°C | 40.6°C | 13.1°C | 45 mm | 34% | 4.1 m/s | 8.5 |
| 2005 | 36.4°C | 27.0°C | 17.7°C | 43.9°C | 12.4°C | 10 mm | 22% | 3.9 m/s | 8.8 |
| 2004 | 37.0°C | 28.2°C | 19.3°C | 44.4°C | 13.4°C | 33 mm | 27% | 4.2 m/s | 8.1 |
| 2003 | 37.7°C | 28.4°C | 19.0°C | 43.6°C | 13.0°C | 6 mm | 29% | 4.1 m/s | 8.9 |
| 2002 | 36.1°C | 27.8°C | 19.4°C | 42.2°C | 11.3°C | 25 mm | 31% | 3.9 m/s | 8.2 |
| 2001 | 32.9°C | 24.7°C | 16.5°C | 40.2°C | 11.3°C | 30 mm | 37% | 4.2 m/s | 8 |
| 2000 | 37.5°C | 29.1°C | 20.6°C | 43.9°C | 14.1°C | 10 mm | 28% | 4 m/s | 8.8 |
| 1999 | 34.7°C | 26.6°C | 18.5°C | 41.9°C | 12.7°C | 14 mm | 32% | 4.3 m/s | 8 |
| 1998 | 34.9°C | 26.9°C | 18.8°C | 41.3°C | 11.4°C | 38 mm | 37% | 3.9 m/s | 8.1 |
| 1997 | 37.7°C | 28.7°C | 19.6°C | 46.4°C | 11.9°C | 8 mm | 27% | 4.3 m/s | 8.9 |
| 1996 | 34.6°C | 26.4°C | 18.1°C | 41.6°C | 14.6°C | 22 mm | 31% | 4.2 m/s | 8.5 |
| 1995 | 35.2°C | 26.5°C | 17.8°C | 44.2°C | 11.6°C | 36 mm | 33% | 4.4 m/s | 8.4 |
| 1994 | 36.7°C | 28.0°C | 19.3°C | 42.8°C | 12.9°C | 29 mm | 30% | 3.9 m/s | 8 |
| 1993 | 34.2°C | 25.7°C | 17.3°C | 42.4°C | 11.1°C | 19 mm | 34% | 4.6 m/s | 8.2 |
| 1992 | 34.8°C | 26.0°C | 17.1°C | 43.7°C | 10.4°C | 4 mm | 27% | 4.2 m/s | 8.8 |
| 1991 | 35.4°C | 27.3°C | 19.2°C | 41.2°C | 13.4°C | 53 mm | 31% | 4.1 m/s | 8.2 |
| 1990 | 37.3°C | 28.4°C | 19.4°C | 44.4°C | 11.0°C | 5 mm | 25% | 4 m/s | 8.6 |
| 1989 | 37.5°C | 28.8°C | 20.0°C | 44.1°C | 13.4°C | 8 mm | 27% | 4.3 m/s | 8.5 |
| 1988 ❄️ 🌧️ | 32.1°C | 24.2°C | 16.2°C | 43.6°C | 10.4°C | 76 mm | 42% | 4.3 m/s | 7.4 |
| 1987 | 36.2°C | 27.7°C | 19.3°C | 41.1°C | 11.1°C | 33 mm | 29% | 4.1 m/s | 8.6 |
| 1986 | 36.6°C | 27.7°C | 18.7°C | 43.2°C | 10.7°C | 3 mm | 24% | 4.2 m/s | 9 |
| 1985 | 34.6°C | 25.6°C | 16.5°C | 40.4°C | 10.7°C | 0 mm | 23% | 4 m/s | 9.2 |
| 1984 | 36.0°C | 27.2°C | 18.4°C | 43.0°C | 12.8°C | 24 mm | 28% | 4 m/s | 8.5 |
| 1983 | 35.9°C | 27.8°C | 19.7°C | 41.1°C | 12.0°C | 52 mm | 39% | 3.8 m/s | — |
| 1982 | 36.4°C | 28.4°C | 20.4°C | 42.6°C | 14.6°C | 16 mm | 30% | 3.3 m/s | — |
| 1981 | 35.0°C | 26.3°C | 17.7°C | 40.5°C | 12.1°C | 32 mm | 30% | 4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 36°C with lows near 18.9°C (mean 27.5°C), based on 45 years of NASA POWER data.
December averages 23 mm of rainfall in Leonora, about average for rainfall. The wettest on record was 76 mm in 1988.
The hottest December reached 46.4°C in 1997. The coldest dipped to 10.4°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.5°C. Daytime highs moved from 35.6°C to 37.2°C and overnight lows from 18.5°C to 19.9°C over the same span.
December is one of the warmer months of the year in Leonora and about average for rainfall, so plan for around 36°C daytime highs and 18.9°C at night.
Not quite — December is the 10th coolest month in Leonora, averaging 27.5°C.
For December in Leonora, pack light, breathable clothing and sun protection, with typical highs of 36°C and lows of 18.9°C.
Relative humidity in December averages 30% — relatively dry.
Average wind speed in December is 4.1 m/s. The windiest December on record averaged 4.7 m/s (2023).
The wettest December on record was 1988 with 76 mm. On average, December sees 23 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 Leonora 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.
