December is one of the warmer months of the year in Ipswich, with average highs near 30.8°C and lows around 18°C (mean 24.4°C). It is a relatively wet time of year, averaging 117 mm of rainfall and 68% relative humidity across the period.
December is one of the warmer months of the year in Ipswich. Across 45 years of records, the warmest December in Ipswich was 2019 — when the month averaged 27°C — while the coldest was 1983 at 21.3°C. Typical December days reach 30.8°C with nights near 18°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Ipswich, averaging 117 mm of rainfall. The wettest December on record was 2010 with 367 mm, while the driest was 2013 at 38 mm.
Relative humidity in Ipswich during December averages 68%. The most humid December was 2010 at 85%, and the least humid was 2019 at 54%.
December receives about 6.8 kWh/m²/day of solar energy in Ipswich. The sunniest December was 2005 at 7.8 kWh/m²/day, and the cloudiest was 2010 at 4.9.
Average wind speed in Ipswich during December is 1.4 m/s. The windiest Decembers were 1988 and 2018 at 1.7 m/s, while the calmest was 2021 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 24.0°C | 23.9°C | 24.7°C | 24.6°C | 24.8°C | +0.8°C |
| Avg High | 30.4°C | 30.3°C | 31.1°C | 31.1°C | 30.9°C | +0.5°C |
| Avg Low | 17.6°C | 17.6°C | 18.3°C | 18.2°C | 18.6°C | +1°C |
| Avg Rain | 123 mm | 130 mm | 112 mm | 111 mm | 108 mm | -16 mm |
December temperatures in Ipswich have risen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 10.3°C (2010) to a record high of 42.1°C (1990).
Rainfall in December is a relatively wet time of year, averaging 117 mm, with a wettest year of 367 mm.
A good time to visit Ipswich
December is a good time to visit Ipswich, with days averaging 30.8°C and nights around 18°C (mean 24.4°C, warmer than Ipswich's yearly average) and higher rainfall. October and November 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 | 32.4°C | 25.3°C | 18.3°C | 38.2°C | 14.3°C | 56 mm | 62% | 1.3 m/s | — |
| 2024 | 29.9°C | 24.6°C | 19.3°C | 36.3°C | 14.4°C | 157 mm | 78% | 1.2 m/s | 6.7 |
| 2023 | 32.9°C | 26.4°C | 20.0°C | 37.7°C | 16.6°C | 140 mm | 68% | 1.2 m/s | 7.2 |
| 2022 | 30.3°C | 23.5°C | 16.7°C | 38.4°C | 13.2°C | 58 mm | 62% | 1.6 m/s | 6.8 |
| 2021 | 28.4°C | 23.1°C | 17.8°C | 34.2°C | 13.3°C | 109 mm | 76% | 1.1 m/s | 7 |
| 2020 | 31.6°C | 25.6°C | 19.7°C | 40.0°C | 16.3°C | 125 mm | 68% | 1.5 m/s | 6.2 |
| 2019 🔥 | 34.8°C | 27.0°C | 19.1°C | 41.4°C | 15.6°C | 54 mm | 54% | 1.5 m/s | 7.7 |
| 2018 | 32.4°C | 25.6°C | 18.7°C | 39.5°C | 15.3°C | 63 mm | 63% | 1.7 m/s | 7 |
| 2017 | 31.9°C | 25.3°C | 18.7°C | 38.0°C | 13.6°C | 95 mm | 68% | 1.3 m/s | 7.3 |
| 2016 | 33.5°C | 26.2°C | 18.9°C | 39.7°C | 15.2°C | 52 mm | 63% | 1.5 m/s | 7 |
| 2015 | 30.1°C | 23.8°C | 17.5°C | 36.6°C | 14.1°C | 74 mm | 67% | 1.4 m/s | 6.6 |
| 2014 | 30.5°C | 24.7°C | 18.9°C | 37.0°C | 14.7°C | 163 mm | 72% | 1.2 m/s | 6.2 |
| 2013 | 32.0°C | 24.5°C | 17.0°C | 40.8°C | 12.5°C | 38 mm | 62% | 1.3 m/s | 7.4 |
| 2012 | 32.4°C | 25.6°C | 18.8°C | 40.6°C | 14.0°C | 67 mm | 61% | 1.5 m/s | 6.9 |
| 2011 | 27.2°C | 21.7°C | 16.2°C | 32.9°C | 12.5°C | 134 mm | 72% | 1.5 m/s | 5.8 |
| 2010 🌧️ | 26.0°C | 22.0°C | 17.9°C | 30.7°C | 10.3°C | 367 mm | 85% | 1.4 m/s | 4.9 |
| 2009 | 32.7°C | 26.2°C | 19.8°C | 40.6°C | 15.6°C | 124 mm | 64% | 1.4 m/s | 6.4 |
| 2008 | 30.3°C | 24.1°C | 17.8°C | 37.2°C | 13.5°C | 100 mm | 71% | 1.2 m/s | 7 |
| 2007 | 28.3°C | 23.2°C | 18.1°C | 33.4°C | 15.6°C | 121 mm | 75% | 1.5 m/s | 5.6 |
| 2006 | 29.7°C | 23.0°C | 16.4°C | 36.6°C | 13.4°C | 74 mm | 65% | 1.5 m/s | 6.5 |
| 2005 | 33.9°C | 26.6°C | 19.4°C | 39.2°C | 13.2°C | 97 mm | 63% | 1.2 m/s | 7.8 |
| 2004 | 29.5°C | 23.8°C | 18.1°C | 37.3°C | 13.5°C | 158 mm | 72% | 1.3 m/s | 6.6 |
| 2003 | 30.7°C | 24.5°C | 18.3°C | 38.9°C | 14.4°C | 124 mm | 69% | 1.3 m/s | 6.6 |
| 2002 | 31.4°C | 24.4°C | 17.5°C | 39.8°C | 12.6°C | 125 mm | 61% | 1.5 m/s | 7.5 |
| 2001 | 33.0°C | 26.0°C | 19.1°C | 40.2°C | 15.4°C | 112 mm | 63% | 1.3 m/s | 6.8 |
| 2000 | 31.8°C | 25.1°C | 18.4°C | 39.4°C | 14.5°C | 87 mm | 65% | 1.3 m/s | 6.7 |
| 1999 | 27.2°C | 21.4°C | 15.6°C | 36.3°C | 13.0°C | 171 mm | 72% | 1.5 m/s | 6.7 |
| 1998 | 31.0°C | 24.7°C | 18.3°C | 38.6°C | 12.5°C | 92 mm | 68% | 1.3 m/s | 6.7 |
| 1997 | 32.8°C | 26.4°C | 20.0°C | 39.2°C | 16.2°C | 105 mm | 67% | 1.3 m/s | 7 |
| 1996 | 30.2°C | 23.9°C | 17.6°C | 40.6°C | 13.6°C | 130 mm | 69% | 1.4 m/s | 6.7 |
| 1995 | 28.8°C | 22.7°C | 16.6°C | 33.8°C | 13.5°C | 185 mm | 70% | 1.3 m/s | 7.3 |
| 1994 | 30.8°C | 24.0°C | 17.2°C | 39.8°C | 12.9°C | 74 mm | 64% | 1.6 m/s | 7.2 |
| 1993 | 30.0°C | 23.2°C | 16.5°C | 36.8°C | 12.3°C | 105 mm | 64% | 1.5 m/s | 6.9 |
| 1992 | 30.3°C | 23.9°C | 17.5°C | 37.5°C | 13.0°C | 77 mm | 66% | 1.4 m/s | 6.8 |
| 1991 | 27.8°C | 22.4°C | 17.0°C | 34.2°C | 13.5°C | 286 mm | 77% | 1.3 m/s | 7.2 |
| 1990 | 34.0°C | 26.8°C | 19.7°C | 42.1°C | 15.7°C | 78 mm | 63% | 1.4 m/s | 7 |
| 1989 | 30.3°C | 23.6°C | 16.9°C | 36.0°C | 13.4°C | 94 mm | 67% | 1.4 m/s | 7.1 |
| 1988 | 29.2°C | 23.9°C | 18.6°C | 35.6°C | 15.6°C | 210 mm | 76% | 1.7 m/s | 6.2 |
| 1987 | 30.1°C | 23.9°C | 17.7°C | 35.8°C | 12.0°C | 107 mm | 69% | 1.3 m/s | 7.2 |
| 1986 | 30.2°C | 23.5°C | 16.8°C | 37.3°C | 11.4°C | 73 mm | 66% | 1.4 m/s | 7.1 |
| 1985 | 32.2°C | 25.1°C | 18.0°C | 41.4°C | 14.2°C | 112 mm | 64% | 1.2 m/s | 7 |
| 1984 | 32.5°C | 25.3°C | 18.0°C | 37.9°C | 12.9°C | 90 mm | 62% | 1.3 m/s | 6.6 |
| 1983 ❄️ | 27.1°C | 21.3°C | 15.5°C | 36.1°C | 12.2°C | 123 mm | 76% | 1.3 m/s | — |
| 1982 | 31.5°C | 24.7°C | 17.9°C | 37.5°C | 15.1°C | 135 mm | 65% | 1.2 m/s | — |
| 1981 | 30.6°C | 24.7°C | 18.9°C | 37.8°C | 15.0°C | 167 mm | 74% | 1.2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 30.8°C with lows near 18°C (mean 24.4°C), based on 45 years of NASA POWER data.
December averages 117 mm of rainfall in Ipswich, a relatively wet time of year. The wettest on record was 367 mm in 2010.
The hottest December reached 42.1°C in 1990. The coldest dipped to 10.3°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.4°C. Daytime highs moved from 30.8°C to 30.8°C and overnight lows from 17.7°C to 18.4°C over the same span.
December is one of the warmer months of the year in Ipswich and a relatively wet time of year, so plan for around 30.8°C daytime highs and 18°C at night.
Not quite — December is the 10th coolest month in Ipswich, averaging 24.4°C.
For December in Ipswich, pack light, breathable clothing and sun protection, with typical highs of 30.8°C and lows of 18°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 68% — moderately humid.
Average wind speed in December is 1.4 m/s. The windiest December on record averaged 1.7 m/s (1988).
The wettest December on record was 2010 with 367 mm. On average, December sees 117 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 Ipswich 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.
