January is one of the warmer months of the year in Cessnock, with average highs near 30.5°C and lows around 17.9°C (mean 24.2°C). It is a relatively wet time of year, averaging 94 mm of rainfall and 66% relative humidity across the period.
January is one of the warmer months of the year in Cessnock. Across 45 years of records, the warmest January in Cessnock was 2019 — when the month averaged 27.6°C — while the coldest was 1989 at 20.9°C. Typical January days reach 30.5°C with nights near 17.9°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Cessnock, averaging 94 mm of rainfall. The wettest January on record was 2016 with 258 mm, while the driest was 1985 at 12 mm.
Relative humidity in Cessnock during January averages 66%. The most humid January was 2016 at 81%, and the least humid was 1985 at 52%.
January receives about 6.5 kWh/m²/day of solar energy in Cessnock. The sunniest January was 1985 at 7.6 kWh/m²/day, and the cloudiest was 1996 at 5.4.
Average wind speed in Cessnock during January is 0.6 m/s. The windiest Januarys were 2022, 2024 and 2025, among others at 0.7 m/s, while the calmest was 2019 at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 23.7°C | 23.8°C | 24.5°C | 24.8°C | 24.1°C | +0.4°C |
| Avg High | 30.1°C | 30.1°C | 31.1°C | 31.2°C | 29.8°C | -0.3°C |
| Avg Low | 17.2°C | 17.5°C | 17.9°C | 18.4°C | 18.4°C | +1.2°C |
| Avg Rain | 104 mm | 94 mm | 67 mm | 104 mm | 107 mm | +4 mm |
January temperatures in Cessnock have fallen by about 0.5°C between 1981–1985 and 2021–2025.
January has ranged from a record low of 10.7°C (1990) to a record high of 44.2°C (2001).
Rainfall in January is a relatively wet time of year, averaging 94 mm, with a wettest year of 258 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.1°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
A good time to visit Cessnock
January is a good time to visit Cessnock, with days averaging 30.5°C and nights around 17.9°C (mean 24.2°C, warmer than Cessnock's yearly average) and higher rainfall. December and March are marginally more temperate, but January still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 29.6°C | 23.8°C | 18.1°C | 40.3°C | 14.5°C | 136 mm | 70% | 0.7 m/s | 5.9 |
| 2024 | 30.5°C | 24.9°C | 19.3°C | 40.5°C | 15.4°C | 106 mm | 70% | 0.7 m/s | 6.2 |
| 2023 | 29.1°C | 23.0°C | 17.0°C | 36.7°C | 12.6°C | 129 mm | 70% | 0.6 m/s | 6.7 |
| 2022 | 27.9°C | 23.3°C | 18.7°C | 31.9°C | 15.9°C | 125 mm | 77% | 0.7 m/s | 6.1 |
| 2021 | 28.5°C | 23.0°C | 17.4°C | 38.4°C | 13.0°C | 85 mm | 69% | 0.6 m/s | 6.4 |
| 2020 | 33.0°C | 26.4°C | 19.8°C | 43.6°C | 16.9°C | 62 mm | 65% | 0.6 m/s | 6.2 |
| 2019 🔥 | 34.8°C | 27.6°C | 20.4°C | 41.5°C | 17.9°C | 90 mm | 66% | 0.5 m/s | 7.1 |
| 2018 | 32.9°C | 25.8°C | 18.6°C | 43.6°C | 12.6°C | 21 mm | 58% | 0.6 m/s | 7.1 |
| 2017 | 33.3°C | 26.3°C | 19.4°C | 42.1°C | 16.7°C | 56 mm | 62% | 0.7 m/s | 6.4 |
| 2016 🌧️ | 26.3°C | 21.6°C | 16.9°C | 33.4°C | 12.9°C | 258 mm | 81% | 0.6 m/s | 6.2 |
| 2015 | 29.6°C | 23.9°C | 18.2°C | 36.5°C | 12.0°C | 162 mm | 71% | 0.6 m/s | 6.7 |
| 2014 | 31.8°C | 24.6°C | 17.5°C | 38.4°C | 14.3°C | 18 mm | 59% | 0.7 m/s | 7.2 |
| 2013 | 31.7°C | 25.1°C | 18.4°C | 43.3°C | 15.2°C | 176 mm | 65% | 0.7 m/s | 6.3 |
| 2012 | 28.5°C | 22.8°C | 17.2°C | 36.7°C | 12.6°C | 102 mm | 69% | 0.7 m/s | 6.1 |
| 2011 | 31.4°C | 25.1°C | 18.8°C | 42.9°C | 14.6°C | 57 mm | 66% | 0.7 m/s | 6.5 |
| 2010 | 31.9°C | 25.3°C | 18.7°C | 40.2°C | 12.0°C | 96 mm | 66% | 0.6 m/s | 6.5 |
| 2009 | 32.6°C | 25.1°C | 17.7°C | 41.5°C | 13.5°C | 28 mm | 57% | 0.7 m/s | 7 |
| 2008 | 28.8°C | 23.3°C | 17.9°C | 37.1°C | 13.9°C | 118 mm | 71% | 0.7 m/s | 5.8 |
| 2007 | 31.9°C | 24.8°C | 17.8°C | 40.0°C | 15.0°C | 42 mm | 60% | 0.7 m/s | 7.2 |
| 2006 | 31.1°C | 25.2°C | 19.2°C | 42.8°C | 17.2°C | 90 mm | 69% | 0.7 m/s | 6 |
| 2005 | 30.8°C | 24.2°C | 17.6°C | 41.8°C | 13.1°C | 82 mm | 64% | 0.7 m/s | 6.7 |
| 2004 | 33.1°C | 25.9°C | 18.8°C | 42.0°C | 14.2°C | 78 mm | 59% | 0.6 m/s | 6.6 |
| 2003 | 31.3°C | 24.5°C | 17.7°C | 41.9°C | 15.1°C | 15 mm | 59% | 0.7 m/s | 6.8 |
| 2002 | 30.8°C | 24.2°C | 17.7°C | 37.9°C | 14.1°C | 61 mm | 60% | 0.7 m/s | 6.9 |
| 2001 | 32.8°C | 25.8°C | 18.8°C | 44.2°C | 15.2°C | 97 mm | 60% | 0.7 m/s | 6.6 |
| 2000 | 27.6°C | 21.7°C | 15.7°C | 41.0°C | 11.9°C | 65 mm | 66% | 0.7 m/s | 6.4 |
| 1999 | 31.1°C | 24.9°C | 18.7°C | 38.4°C | 16.0°C | 90 mm | 67% | 0.6 m/s | 6.6 |
| 1998 | 32.1°C | 25.3°C | 18.6°C | 40.8°C | 15.1°C | 103 mm | 65% | 0.6 m/s | 6.8 |
| 1997 | 27.3°C | 21.5°C | 15.8°C | 36.6°C | 11.2°C | 111 mm | 66% | 0.7 m/s | 6.3 |
| 1996 | 28.4°C | 22.9°C | 17.4°C | 39.1°C | 15.1°C | 125 mm | 74% | 0.6 m/s | 5.4 |
| 1995 | 26.6°C | 21.6°C | 16.5°C | 33.8°C | 12.9°C | 128 mm | 73% | 0.6 m/s | 5.9 |
| 1994 | 32.3°C | 25.1°C | 17.9°C | 40.2°C | 14.3°C | 52 mm | 56% | 0.7 m/s | 7.2 |
| 1993 | 31.3°C | 24.8°C | 18.3°C | 39.0°C | 13.7°C | 75 mm | 68% | 0.6 m/s | 6.1 |
| 1992 | 29.3°C | 22.8°C | 16.3°C | 39.0°C | 12.4°C | 71 mm | 69% | 0.6 m/s | 6.5 |
| 1991 | 32.6°C | 25.9°C | 19.1°C | 39.3°C | 15.1°C | 87 mm | 62% | 0.6 m/s | 6.7 |
| 1990 | 29.6°C | 23.2°C | 16.8°C | 40.5°C | 10.7°C | 95 mm | 67% | 0.6 m/s | 6 |
| 1989 ❄️ | 25.5°C | 20.9°C | 16.2°C | 34.3°C | 12.6°C | 148 mm | 74% | 0.7 m/s | 6.2 |
| 1988 | 29.3°C | 23.3°C | 17.2°C | 35.9°C | 12.5°C | 171 mm | 72% | 0.6 m/s | 7.1 |
| 1987 | 32.9°C | 25.8°C | 18.6°C | 41.5°C | 12.2°C | 75 mm | 61% | 0.6 m/s | 6.7 |
| 1986 | 28.7°C | 22.4°C | 16.2°C | 38.2°C | 12.9°C | 141 mm | 62% | 0.7 m/s | 6.9 |
| 1985 | 33.1°C | 24.9°C | 16.6°C | 39.9°C | 12.6°C | 12 mm | 52% | 0.6 m/s | 7.6 |
| 1984 | 27.0°C | 21.5°C | 16.0°C | 34.9°C | 11.9°C | 185 mm | 71% | 0.6 m/s | 5.9 |
| 1983 | 31.9°C | 24.7°C | 17.5°C | 39.4°C | 13.6°C | 38 mm | 56% | 0.7 m/s | — |
| 1982 | 30.8°C | 24.4°C | 17.9°C | 40.7°C | 14.5°C | 106 mm | 67% | 0.6 m/s | — |
| 1981 | 31.8°C | 25.2°C | 18.6°C | 38.8°C | 14.3°C | 57 mm | 66% | 0.6 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 30.5°C with lows near 17.9°C (mean 24.2°C), based on 45 years of NASA POWER data.
January averages 94 mm of rainfall in Cessnock, a relatively wet time of year. The wettest on record was 258 mm in 2016.
The hottest January reached 44.2°C in 2001. The coldest dipped to 10.7°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have fallen by about 0.5°C — but days and nights have moved in opposite directions. Overnight lows rose from 17.3°C to 18.1°C while daytime highs eased from 30.9°C to 29.1°C, narrowing the gap between day and night.
January is one of the warmer months of the year in Cessnock and a relatively wet time of year, so plan for around 30.5°C daytime highs and 17.9°C at night.
Not quite — January is the 12th coolest month in Cessnock, averaging 24.2°C.
For January in Cessnock, pack light, breathable clothing and sun protection, with typical highs of 30.5°C and lows of 17.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 66% — moderately humid.
Average wind speed in January is 0.6 m/s. The windiest January on record averaged 0.7 m/s (1983).
The wettest January on record was 2016 with 258 mm. On average, January sees 94 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 Cessnock behaves each January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
