December is one of the warmer months of the year in Nowra, with average highs near 25.2°C and lows around 16.4°C (mean 20.8°C). It is one of the drier months, averaging 80 mm of rainfall and 69% relative humidity across the period.
December is one of the warmer months of the year in Nowra. Across 45 years of records, the warmest December in Nowra was 2017 — when the month averaged 22.9°C — while the coldest was 2011 at 18.2°C. Typical December days reach 25.2°C with nights near 16.4°C. The long-term trend is warming, about 0.2°C per decade.
December is one of the drier months in Nowra, averaging 80 mm of rainfall. The wettest December on record was 1991 with 189 mm, while the driest was 2019 at 6 mm.
Relative humidity in Nowra during December averages 69%. The most humid Decembers were 1992 and 2023 at 80%, and the least humid were 1984 and 2019 at 60%.
December receives about 6.6 kWh/m²/day of solar energy in Nowra. The sunniest December was 2005 at 8.3 kWh/m²/day, and the cloudiest was 1992 at 5.6.
Average wind speed in Nowra during December is 1.6 m/s. The windiest Decembers were 1999 and 2002 at 1.8 m/s, while the calmest were 2017, 2018 and 2024, among others at 1.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.3°C | 20.4°C | 21.0°C | 21.3°C | 20.6°C | +0.3°C |
| Avg High | 24.5°C | 24.9°C | 25.5°C | 25.8°C | 24.8°C | +0.3°C |
| Avg Low | 16.0°C | 16.0°C | 16.6°C | 16.8°C | 16.5°C | +0.5°C |
| Avg Rain | 97 mm | 74 mm | 65 mm | 77 mm | 93 mm | -4 mm |
December temperatures in Nowra have stayed relatively stable across the record.
December has ranged from a record low of 9.7°C (1995) to a record high of 38.5°C (2019).
Rainfall in December is one of the drier months, averaging 80 mm, with a wettest year of 189 mm.
One of the best times to visit Nowra
December is one of the best times to visit Nowra. Expect days averaging 25.2°C and nights around 16.4°C (mean 20.8°C) — warmer than Nowra's yearly average — with moderate rainfall (80 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 | 26.8°C | 21.7°C | 16.6°C | 37.6°C | 11.5°C | 35 mm | 60% | 1.5 m/s | — |
| 2024 | 27.5°C | 22.6°C | 17.8°C | 36.3°C | 14.8°C | 35 mm | 67% | 1.4 m/s | 7.6 |
| 2023 | 24.7°C | 21.2°C | 17.7°C | 34.2°C | 15.3°C | 177 mm | 80% | 1.5 m/s | 6 |
| 2022 | 22.7°C | 18.8°C | 14.8°C | 30.4°C | 10.8°C | 52 mm | 69% | 1.6 m/s | 6.8 |
| 2021 | 22.8°C | 19.3°C | 15.8°C | 29.7°C | 13.4°C | 175 mm | 78% | 1.6 m/s | 6 |
| 2020 | 24.1°C | 20.2°C | 16.4°C | 33.1°C | 13.8°C | 86 mm | 71% | 1.6 m/s | 5.7 |
| 2019 | 27.4°C | 22.0°C | 16.6°C | 38.5°C | 13.5°C | 6 mm | 60% | 1.5 m/s | 7.1 |
| 2018 | 26.8°C | 22.2°C | 17.5°C | 36.5°C | 13.9°C | 113 mm | 71% | 1.4 m/s | 6.6 |
| 2017 🔥 | 27.6°C | 22.9°C | 18.2°C | 36.4°C | 15.0°C | 76 mm | 69% | 1.4 m/s | 6.1 |
| 2016 | 27.6°C | 22.7°C | 17.8°C | 34.7°C | 13.9°C | 78 mm | 66% | 1.4 m/s | 6.3 |
| 2015 | 26.4°C | 21.7°C | 17.0°C | 35.0°C | 13.9°C | 52 mm | 64% | 1.5 m/s | 6.9 |
| 2014 | 25.1°C | 21.0°C | 17.0°C | 30.9°C | 13.2°C | 166 mm | 73% | 1.5 m/s | 6.3 |
| 2013 | 26.5°C | 21.5°C | 16.5°C | 38.3°C | 12.6°C | 53 mm | 64% | 1.5 m/s | 7.2 |
| 2012 | 25.5°C | 20.9°C | 16.2°C | 34.0°C | 13.2°C | 36 mm | 66% | 1.6 m/s | 6.2 |
| 2011 ❄️ | 21.5°C | 18.2°C | 15.0°C | 28.1°C | 11.3°C | 58 mm | 74% | 1.6 m/s | 5.7 |
| 2010 | 23.9°C | 20.1°C | 16.4°C | 30.4°C | 11.4°C | 130 mm | 76% | 1.5 m/s | 6.2 |
| 2009 | 26.2°C | 21.4°C | 16.7°C | 36.5°C | 14.0°C | 93 mm | 68% | 1.6 m/s | 6.7 |
| 2008 | 25.0°C | 20.4°C | 15.9°C | 31.4°C | 13.3°C | 81 mm | 65% | 1.6 m/s | 6.6 |
| 2007 | 24.1°C | 20.6°C | 17.0°C | 30.7°C | 14.2°C | 92 mm | 73% | 1.7 m/s | 5.7 |
| 2006 | 24.7°C | 20.2°C | 15.7°C | 35.4°C | 11.4°C | 80 mm | 67% | 1.7 m/s | 6.1 |
| 2005 | 27.6°C | 22.1°C | 16.7°C | 34.8°C | 13.3°C | 29 mm | 61% | 1.4 m/s | 8.3 |
| 2004 | 24.2°C | 20.3°C | 16.3°C | 33.7°C | 12.1°C | 92 mm | 71% | 1.7 m/s | 6.5 |
| 2003 | 25.4°C | 21.2°C | 17.0°C | 35.1°C | 14.5°C | 39 mm | 71% | 1.5 m/s | 6.2 |
| 2002 | 25.3°C | 20.9°C | 16.5°C | 35.8°C | 12.6°C | 59 mm | 67% | 1.8 m/s | 6.8 |
| 2001 | 25.7°C | 21.0°C | 16.3°C | 34.3°C | 13.2°C | 40 mm | 64% | 1.6 m/s | 6.6 |
| 2000 | 26.9°C | 22.3°C | 17.7°C | 35.4°C | 13.4°C | 47 mm | 65% | 1.5 m/s | 7.3 |
| 1999 | 23.8°C | 19.9°C | 16.1°C | 31.5°C | 12.8°C | 111 mm | 71% | 1.8 m/s | 6.2 |
| 1998 | 26.0°C | 21.6°C | 17.2°C | 34.5°C | 13.3°C | 35 mm | 70% | 1.7 m/s | 6.6 |
| 1997 | 27.7°C | 22.6°C | 17.5°C | 36.3°C | 15.0°C | 21 mm | 63% | 1.5 m/s | 6.7 |
| 1996 | 24.5°C | 19.7°C | 14.9°C | 33.1°C | 12.0°C | 40 mm | 67% | 1.6 m/s | 6.6 |
| 1995 | 22.6°C | 18.4°C | 14.3°C | 28.4°C | 9.7°C | 72 mm | 72% | 1.6 m/s | 6.6 |
| 1994 | 25.6°C | 20.8°C | 16.0°C | 38.2°C | 12.3°C | 48 mm | 68% | 1.6 m/s | 6.9 |
| 1993 | 25.2°C | 20.6°C | 16.0°C | 35.6°C | 12.9°C | 36 mm | 67% | 1.6 m/s | 6.4 |
| 1992 | 22.2°C | 19.1°C | 15.9°C | 28.2°C | 12.3°C | 149 mm | 80% | 1.5 m/s | 5.6 |
| 1991 🌧️ | 23.1°C | 19.0°C | 15.0°C | 29.9°C | 10.8°C | 189 mm | 72% | 1.6 m/s | 6.2 |
| 1990 | 28.4°C | 22.7°C | 17.1°C | 36.1°C | 11.0°C | 45 mm | 64% | 1.5 m/s | 7.4 |
| 1989 | 24.2°C | 20.0°C | 15.8°C | 31.5°C | 12.5°C | 127 mm | 69% | 1.6 m/s | 6.8 |
| 1988 | 24.0°C | 20.5°C | 16.9°C | 31.2°C | 12.7°C | 114 mm | 77% | 1.5 m/s | 5.8 |
| 1987 | 24.1°C | 19.9°C | 15.8°C | 33.8°C | 12.0°C | 96 mm | 68% | 1.7 m/s | 6.6 |
| 1986 | 23.5°C | 19.2°C | 15.0°C | 32.3°C | 10.7°C | 64 mm | 67% | 1.6 m/s | 7.1 |
| 1985 | 24.8°C | 20.7°C | 16.6°C | 31.1°C | 13.0°C | 127 mm | 70% | 1.4 m/s | 6.5 |
| 1984 | 24.3°C | 20.0°C | 15.6°C | 34.0°C | 11.8°C | 88 mm | 60% | 1.7 m/s | 7.1 |
| 1983 | 24.1°C | 19.9°C | 15.6°C | 34.6°C | 11.6°C | 91 mm | 71% | 1.6 m/s | — |
| 1982 | 26.3°C | 21.3°C | 16.4°C | 35.8°C | 13.3°C | 34 mm | 64% | 1.5 m/s | — |
| 1981 | 25.6°C | 20.9°C | 16.2°C | 34.4°C | 12.4°C | 132 mm | 68% | 1.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 25.2°C with lows near 16.4°C (mean 20.8°C), based on 45 years of NASA POWER data.
December averages 80 mm of rainfall in Nowra, one of the drier months. The wettest on record was 189 mm in 1991.
The hottest December reached 38.5°C in 2019. The coldest dipped to 9.7°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 16.1°C to 16.5°C while daytime highs eased from 25°C to 24.9°C, narrowing the gap between day and night.
December is one of the warmer months of the year in Nowra and one of the drier months, so plan for around 25.2°C daytime highs and 16.4°C at night.
Not quite — December is the 10th coolest month in Nowra, averaging 20.8°C.
For December in Nowra, pack light layers you can adjust through the day, with typical highs of 25.2°C and lows of 16.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 69% — moderately humid.
Average wind speed in December is 1.6 m/s. The windiest December on record averaged 1.8 m/s (1999).
The wettest December on record was 1991 with 189 mm. On average, December sees 80 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 Nowra 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.
