December is one of the warmer months of the year in Batemans Bay, with average highs near 25.4°C and lows around 13.5°C (mean 19.5°C). It is about average for rainfall, averaging 79 mm of rainfall and 66% relative humidity across the period.
December is one of the warmer months of the year in Batemans Bay. Across 45 years of records, the warmest December in Batemans Bay was 1990 — when the month averaged 21.9°C — while the coldest was 2011 at 17°C. Typical December days reach 25.4°C with nights near 13.5°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Batemans Bay, averaging 79 mm of rainfall. The wettest December on record was 2014 with 195 mm, while the driest was 2019 at 6 mm.
Relative humidity in Batemans Bay during December averages 66%. The most humid December was 1992 at 81%, and the least humid was 2019 at 53%.
December receives about 6.5 kWh/m²/day of solar energy in Batemans Bay. The sunniest December was 2005 at 7.7 kWh/m²/day, and the cloudiest were 1992 and 2020 at 5.8.
Average wind speed in Batemans Bay during December is 1.1 m/s. The windiest Decembers were 1984 and 2008 at 1.3 m/s, while the calmest were 2018, 2023 and 2024, among others at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 18.8°C | 19.2°C | 19.8°C | 20.2°C | 19.1°C | +0.3°C |
| Avg High | 24.6°C | 25.2°C | 26.0°C | 26.1°C | 24.7°C | +0.1°C |
| Avg Low | 13.0°C | 13.2°C | 13.7°C | 14.2°C | 13.5°C | +0.5°C |
| Avg Rain | 86 mm | 77 mm | 63 mm | 80 mm | 93 mm | +7 mm |
December temperatures in Batemans Bay have risen by about 0.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 5.8°C (1987) to a record high of 38.6°C (2025).
Rainfall in December is about average for rainfall, averaging 79 mm, with a wettest year of 195 mm.
One of the best times to visit Batemans Bay
December is one of the best times to visit Batemans Bay. Expect days averaging 25.4°C and nights around 13.5°C (mean 19.5°C) — warmer than Batemans Bay's yearly average — with moderate rainfall (79 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 | 27.6°C | 20.6°C | 13.6°C | 38.6°C | 7.8°C | 24 mm | 56% | 1.1 m/s | — |
| 2024 | 28.3°C | 21.7°C | 15.1°C | 34.3°C | 10.2°C | 32 mm | 63% | 1 m/s | 7.1 |
| 2023 | 24.1°C | 19.5°C | 14.9°C | 32.5°C | 10.5°C | 169 mm | 79% | 1 m/s | 6.1 |
| 2022 | 22.5°C | 17.1°C | 11.7°C | 32.7°C | 6.7°C | 49 mm | 70% | 1.1 m/s | 7 |
| 2021 | 22.0°C | 17.3°C | 12.6°C | 28.1°C | 8.9°C | 183 mm | 81% | 1.1 m/s | 6 |
| 2020 | 23.8°C | 18.5°C | 13.2°C | 34.8°C | 9.3°C | 99 mm | 71% | 1.2 m/s | 5.8 |
| 2019 | 28.8°C | 21.5°C | 14.1°C | 38.2°C | 9.3°C | 6 mm | 53% | 1.2 m/s | 6.5 |
| 2018 | 27.3°C | 21.2°C | 15.1°C | 35.9°C | 9.9°C | 113 mm | 69% | 1 m/s | 6.4 |
| 2017 | 26.7°C | 21.0°C | 15.3°C | 35.4°C | 10.7°C | 101 mm | 70% | 1.1 m/s | 5.9 |
| 2016 | 28.1°C | 21.7°C | 15.4°C | 34.4°C | 11.4°C | 83 mm | 63% | 1.1 m/s | 6.1 |
| 2015 | 27.3°C | 20.8°C | 14.3°C | 36.5°C | 9.7°C | 34 mm | 61% | 1.1 m/s | 7 |
| 2014 🌧️ | 24.9°C | 19.6°C | 14.3°C | 30.8°C | 10.6°C | 195 mm | 73% | 1 m/s | 6.2 |
| 2013 | 27.1°C | 20.5°C | 13.8°C | 37.5°C | 8.8°C | 46 mm | 62% | 1.1 m/s | 6.8 |
| 2012 | 25.9°C | 19.8°C | 13.8°C | 33.9°C | 8.9°C | 31 mm | 63% | 1.2 m/s | 6.3 |
| 2011 ❄️ | 21.9°C | 17.0°C | 12.1°C | 28.6°C | 6.2°C | 52 mm | 73% | 1.1 m/s | 6.4 |
| 2010 | 23.3°C | 18.5°C | 13.7°C | 32.7°C | 8.2°C | 142 mm | 76% | 1.2 m/s | 6.4 |
| 2009 | 27.3°C | 20.7°C | 14.0°C | 37.5°C | 10.3°C | 80 mm | 61% | 1.1 m/s | 6.8 |
| 2008 | 24.7°C | 18.8°C | 12.9°C | 31.5°C | 9.0°C | 78 mm | 62% | 1.3 m/s | 6.3 |
| 2007 | 24.0°C | 18.9°C | 13.9°C | 31.7°C | 10.7°C | 94 mm | 72% | 1.1 m/s | 6 |
| 2006 | 25.7°C | 19.4°C | 13.0°C | 36.6°C | 7.9°C | 64 mm | 63% | 1.2 m/s | 6.1 |
| 2005 | 28.0°C | 20.8°C | 13.7°C | 38.3°C | 10.1°C | 28 mm | 57% | 1.1 m/s | 7.7 |
| 2004 | 24.3°C | 18.8°C | 13.4°C | 32.5°C | 8.0°C | 111 mm | 70% | 1.1 m/s | 6.3 |
| 2003 | 26.2°C | 20.3°C | 14.4°C | 35.2°C | 10.0°C | 53 mm | 68% | 1 m/s | 6.3 |
| 2002 | 26.3°C | 19.8°C | 13.4°C | 36.4°C | 7.7°C | 48 mm | 62% | 1.2 m/s | 6.6 |
| 2001 | 25.9°C | 19.6°C | 13.4°C | 33.1°C | 8.5°C | 35 mm | 59% | 1.1 m/s | 6.3 |
| 2000 | 27.1°C | 20.8°C | 14.5°C | 34.9°C | 8.5°C | 40 mm | 63% | 1.1 m/s | 7 |
| 1999 | 23.9°C | 18.5°C | 13.1°C | 30.8°C | 6.8°C | 124 mm | 69% | 1.2 m/s | 6.4 |
| 1998 | 26.3°C | 20.2°C | 14.1°C | 35.6°C | 9.5°C | 42 mm | 68% | 1.1 m/s | 6.4 |
| 1997 | 28.3°C | 21.5°C | 14.7°C | 36.7°C | 11.3°C | 25 mm | 59% | 1.1 m/s | 6.6 |
| 1996 | 25.2°C | 18.7°C | 12.2°C | 33.9°C | 8.5°C | 54 mm | 63% | 1.1 m/s | 6.2 |
| 1995 | 22.9°C | 17.2°C | 11.5°C | 29.7°C | 5.9°C | 77 mm | 69% | 1.1 m/s | 6.4 |
| 1994 | 26.6°C | 19.9°C | 13.3°C | 37.3°C | 8.6°C | 62 mm | 65% | 1.1 m/s | 6.9 |
| 1993 | 25.2°C | 19.2°C | 13.3°C | 34.2°C | 9.4°C | 36 mm | 65% | 1.2 m/s | 6.2 |
| 1992 | 21.4°C | 17.2°C | 13.0°C | 27.0°C | 8.2°C | 151 mm | 81% | 1.1 m/s | 5.8 |
| 1991 | 23.0°C | 17.6°C | 12.1°C | 32.6°C | 7.3°C | 166 mm | 71% | 1.2 m/s | 6.4 |
| 1990 🔥 | 29.4°C | 21.9°C | 14.4°C | 36.1°C | 7.9°C | 38 mm | 57% | 1 m/s | 7.2 |
| 1989 | 24.4°C | 18.7°C | 13.0°C | 32.4°C | 7.8°C | 95 mm | 67% | 1.2 m/s | 6.9 |
| 1988 | 24.0°C | 19.2°C | 14.4°C | 29.4°C | 9.9°C | 131 mm | 77% | 1.1 m/s | 5.9 |
| 1987 | 25.0°C | 18.8°C | 12.7°C | 33.7°C | 5.8°C | 87 mm | 65% | 1.1 m/s | 6.3 |
| 1986 | 23.7°C | 17.9°C | 12.1°C | 32.2°C | 7.2°C | 59 mm | 66% | 1.1 m/s | 6.9 |
| 1985 | 23.4°C | 18.3°C | 13.2°C | 30.5°C | 9.5°C | 89 mm | 71% | 1.2 m/s | 6.5 |
| 1984 | 24.3°C | 18.2°C | 12.1°C | 35.4°C | 7.5°C | 76 mm | 59% | 1.3 m/s | 6.9 |
| 1983 | 23.6°C | 18.1°C | 12.7°C | 34.0°C | 7.5°C | 95 mm | 73% | 1.1 m/s | — |
| 1982 | 27.2°C | 20.4°C | 13.6°C | 36.1°C | 9.7°C | 29 mm | 59% | 1.1 m/s | — |
| 1981 | 25.6°C | 19.4°C | 13.2°C | 33.2°C | 8.0°C | 114 mm | 65% | 1.1 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 25.4°C with lows near 13.5°C (mean 19.5°C), based on 45 years of NASA POWER data.
December averages 79 mm of rainfall in Batemans Bay, about average for rainfall. The wettest on record was 195 mm in 2014.
The hottest December reached 38.6°C in 2025. The coldest dipped to 5.8°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.3°C. Daytime highs moved from 24.8°C to 24.9°C and overnight lows from 13°C to 13.6°C over the same span.
December is one of the warmer months of the year in Batemans Bay and about average for rainfall, so plan for around 25.4°C daytime highs and 13.5°C at night.
Not quite — December is the 10th coolest month in Batemans Bay, averaging 19.5°C.
For December in Batemans Bay, pack light layers you can adjust through the day, with typical highs of 25.4°C and lows of 13.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 66% — moderately humid.
Average wind speed in December is 1.1 m/s. The windiest December on record averaged 1.3 m/s (1984).
The wettest December on record was 2014 with 195 mm. On average, December sees 79 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 Batemans Bay 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.
