December is one of the warmer months of the year in Leopold, with average highs near 23.9°C and lows around 12.1°C (mean 18°C). It is about average for rainfall, averaging 51 mm of rainfall and 65% relative humidity across the period.
December is one of the warmer months of the year in Leopold. Across 45 years of records, the warmest December in Leopold was 2015 — when the month averaged 20.9°C — while the coldest was 1995 at 15.2°C. Typical December days reach 23.9°C with nights near 12.1°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Leopold, averaging 51 mm of rainfall. The wettest December on record was 1985 with 134 mm, while the driest was 1997 at 8 mm.
Relative humidity in Leopold during December averages 65%. The most humid December was 1992 at 78%, and the least humid was 2015 at 55%.
December receives about 7 kWh/m²/day of solar energy in Leopold. The sunniest December was 2000 at 7.8 kWh/m²/day, and the cloudiest was 1992 at 6.
Average wind speed in Leopold during December is 3.8 m/s. The windiest December was 1984 at 4.6 m/s, while the calmest was 1988 at 3.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.6°C | 17.4°C | 18.1°C | 18.8°C | 18.0°C | +0.4°C |
| Avg High | 23.4°C | 23.2°C | 24.1°C | 24.9°C | 23.8°C | +0.4°C |
| Avg Low | 11.8°C | 11.7°C | 12.1°C | 12.8°C | 12.2°C | +0.4°C |
| Avg Rain | 58 mm | 56 mm | 48 mm | 43 mm | 48 mm | -10 mm |
December temperatures in Leopold have risen by about 0.6°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 6.6°C (1993) to a record high of 41.6°C (2019).
Rainfall in December is about average for rainfall, averaging 51 mm, with a wettest year of 134 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
One of the best times to visit Leopold
December is one of the best times to visit Leopold. Expect days averaging 23.9°C and nights around 12.1°C (mean 18°C) — warmer than Leopold's yearly average — with moderate rainfall (51 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 | 24.0°C | 17.8°C | 11.6°C | 35.1°C | 8.2°C | 32 mm | 61% | 3.9 m/s | — |
| 2024 | 26.6°C | 19.9°C | 13.3°C | 38.9°C | 9.8°C | 26 mm | 61% | 3.8 m/s | 7.5 |
| 2023 | 23.4°C | 18.4°C | 13.4°C | 35.1°C | 10.8°C | 106 mm | 72% | 4 m/s | 6.4 |
| 2022 | 22.9°C | 17.3°C | 11.7°C | 35.4°C | 8.1°C | 52 mm | 70% | 3.7 m/s | 7.7 |
| 2021 | 23.9°C | 17.9°C | 11.9°C | 36.4°C | 8.7°C | 28 mm | 66% | 3.9 m/s | 7.6 |
| 2020 | 22.3°C | 16.8°C | 11.3°C | 32.8°C | 8.7°C | 47 mm | 65% | 4.1 m/s | 6.7 |
| 2019 | 25.2°C | 18.7°C | 12.2°C | 41.6°C | 7.8°C | 11 mm | 61% | 4 m/s | 7.3 |
| 2018 | 25.9°C | 20.1°C | 14.2°C | 37.0°C | 10.1°C | 75 mm | 67% | 3.5 m/s | 6.9 |
| 2017 | 24.8°C | 19.1°C | 13.3°C | 34.9°C | 9.8°C | 82 mm | 66% | 3.6 m/s | 6.8 |
| 2016 | 25.9°C | 19.3°C | 12.7°C | 35.2°C | 8.6°C | 37 mm | 60% | 3.8 m/s | 7.1 |
| 2015 🔥 | 28.1°C | 20.9°C | 13.7°C | 40.4°C | 9.3°C | 33 mm | 55% | 3.7 m/s | 7.7 |
| 2014 | 24.0°C | 18.3°C | 12.5°C | 32.5°C | 9.6°C | 42 mm | 67% | 3.8 m/s | 7 |
| 2013 | 24.1°C | 17.9°C | 11.7°C | 37.0°C | 6.8°C | 35 mm | 66% | 3.5 m/s | 6.9 |
| 2012 | 24.5°C | 18.5°C | 12.4°C | 35.7°C | 9.6°C | 28 mm | 62% | 3.8 m/s | 7.2 |
| 2011 | 23.8°C | 18.3°C | 12.9°C | 34.1°C | 7.7°C | 34 mm | 67% | 3.6 m/s | 7.3 |
| 2010 | 22.5°C | 17.2°C | 11.9°C | 36.3°C | 8.6°C | 57 mm | 72% | 3.7 m/s | 6.8 |
| 2009 | 24.4°C | 18.1°C | 11.9°C | 36.1°C | 8.7°C | 49 mm | 64% | 3.5 m/s | 7.3 |
| 2008 | 21.8°C | 16.6°C | 11.4°C | 29.1°C | 8.8°C | 85 mm | 68% | 4 m/s | 6.8 |
| 2007 | 25.4°C | 19.2°C | 13.1°C | 38.0°C | 9.0°C | 71 mm | 64% | 3.5 m/s | 7.2 |
| 2006 | 24.4°C | 18.0°C | 11.6°C | 40.7°C | 8.5°C | 18 mm | 56% | 4 m/s | 7.6 |
| 2005 | 26.6°C | 19.6°C | 12.6°C | 41.3°C | 10.0°C | 41 mm | 56% | 4.3 m/s | 7.1 |
| 2004 | 23.1°C | 17.8°C | 12.5°C | 34.7°C | 9.5°C | 68 mm | 69% | 3.7 m/s | 7.3 |
| 2003 | 26.4°C | 19.8°C | 13.2°C | 37.6°C | 10.0°C | 36 mm | 62% | 3.6 m/s | 7.2 |
| 2002 | 24.0°C | 18.1°C | 12.3°C | 34.4°C | 8.1°C | 33 mm | 64% | 4.3 m/s | 6.7 |
| 2001 | 20.2°C | 15.4°C | 10.5°C | 32.3°C | 8.3°C | 50 mm | 71% | 3.9 m/s | 6.3 |
| 2000 | 25.1°C | 18.6°C | 12.2°C | 37.5°C | 9.1°C | 25 mm | 62% | 3.9 m/s | 7.8 |
| 1999 | 23.1°C | 17.7°C | 12.3°C | 34.7°C | 9.4°C | 79 mm | 65% | 4.3 m/s | 7.1 |
| 1998 | 24.1°C | 18.2°C | 12.3°C | 38.5°C | 8.7°C | 44 mm | 65% | 3.9 m/s | 6.7 |
| 1997 | 23.6°C | 17.9°C | 12.2°C | 31.9°C | 9.7°C | 8 mm | 65% | 4 m/s | 6.9 |
| 1996 | 22.3°C | 16.2°C | 10.1°C | 32.8°C | 7.3°C | 28 mm | 63% | 3.8 m/s | 7.2 |
| 1995 ❄️ | 20.4°C | 15.2°C | 10.0°C | 29.8°C | 6.7°C | 49 mm | 70% | 4 m/s | 6.4 |
| 1994 | 26.3°C | 19.5°C | 12.8°C | 36.0°C | 6.8°C | 22 mm | 58% | 3.6 m/s | 7.7 |
| 1993 | 22.0°C | 16.5°C | 10.9°C | 30.2°C | 6.6°C | 101 mm | 70% | 4 m/s | 6.6 |
| 1992 | 22.2°C | 17.5°C | 12.7°C | 29.6°C | 8.2°C | 109 mm | 78% | 3.6 m/s | 6 |
| 1991 | 22.2°C | 16.9°C | 11.6°C | 33.9°C | 7.2°C | 95 mm | 70% | 3.6 m/s | 6.8 |
| 1990 | 25.4°C | 18.9°C | 12.4°C | 34.9°C | 9.0°C | 30 mm | 64% | 4.1 m/s | 6.8 |
| 1989 | 24.6°C | 18.5°C | 12.4°C | 34.8°C | 9.9°C | 24 mm | 63% | 3.9 m/s | 7.5 |
| 1988 | 24.5°C | 18.6°C | 12.6°C | 35.8°C | 8.8°C | 70 mm | 69% | 3.4 m/s | 7 |
| 1987 | 22.1°C | 16.6°C | 11.1°C | 34.4°C | 7.6°C | 92 mm | 68% | 3.8 m/s | 7 |
| 1986 | 21.8°C | 16.1°C | 10.4°C | 32.5°C | 7.4°C | 78 mm | 67% | 4.1 m/s | 6.6 |
| 1985 🌧️ | 22.2°C | 17.1°C | 12.1°C | 28.4°C | 8.8°C | 134 mm | 74% | 3.8 m/s | 6.7 |
| 1984 | 22.6°C | 16.8°C | 11.0°C | 29.5°C | 8.5°C | 42 mm | 65% | 4.6 m/s | 7.1 |
| 1983 | 24.0°C | 18.2°C | 12.4°C | 35.3°C | 9.1°C | 9 mm | 64% | 3.5 m/s | — |
| 1982 | 25.0°C | 18.5°C | 12.1°C | 36.1°C | 8.4°C | 49 mm | 60% | 3.7 m/s | — |
| 1981 | 24.1°C | 18.0°C | 12.0°C | 36.6°C | 9.5°C | 24 mm | 62% | 3.9 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 23.9°C with lows near 12.1°C (mean 18°C), based on 45 years of NASA POWER data.
December averages 51 mm of rainfall in Leopold, about average for rainfall. The wettest on record was 134 mm in 1985.
The hottest December reached 41.6°C in 2019. The coldest dipped to 6.6°C in 1993.
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 23.6°C to 24.2°C and overnight lows from 11.9°C to 12.4°C over the same span.
December is one of the warmer months of the year in Leopold and about average for rainfall, so plan for around 23.9°C daytime highs and 12.1°C at night.
Not quite — December is the 9th coolest month in Leopold, averaging 18°C.
For December in Leopold, pack light layers you can adjust through the day, with typical highs of 23.9°C and lows of 12.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 65% — moderately humid.
Average wind speed in December is 3.8 m/s. The windiest December on record averaged 4.6 m/s (1984).
The wettest December on record was 1985 with 134 mm. On average, December sees 51 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 Leopold 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.
