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Liverpool is a major centre in Sydney's southwest, situated 32 kilometres from the CBD along the Georges River. The suburb's relatively flat terrain on the Cumberland Plain, combined with its inland position, produces a climate that shares many characteristics with western Sydney, hot summers, cool winters, and greater temperature variability than the coast. Summer maximums average 30-32 degrees Celsius, while winter mornings regularly drop to 4-6 degrees, with frost occurring on 10-15 occasions per year in the open parkland along the Georges River.
Liverpool receives approximately 900 millimetres of rainfall annually, below the Sydney coastal average but sufficient to maintain the riparian vegetation along the Georges River and its tributaries. The Georges River is the dominant hydrological feature of the suburb, and its flood behaviour is well documented. Rainfall from both east coast lows and inland thunderstorms drains through Liverpool, making it susceptible to flooding from multiple weather patterns. The February 2020 and March 2021 flood events demonstrated this vulnerability, with riverside areas including Moorebank and Chipping Norton significantly affected. Summer thunderstorms contribute roughly 40 percent of annual rainfall, with autumn east coast lows responsible for the heaviest multi-day totals.
Liverpool's temperature profile reflects its position between the coast and the far western suburbs. It is typically 2-3 degrees cooler than Penrith on extreme summer days but 3-5 degrees warmer than Cronulla or Bondi. The Georges River provides some localised cooling, with riverside areas recording slightly lower maximums than the commercial centre around Liverpool Hospital and Westfield. Winter cold pools in the river valley, producing some of Sydney's lowest overnight temperatures outside the Blue Mountains foothills. The daily temperature range in Liverpool averages 12-14 degrees in summer and 10-12 degrees in winter, reflecting the reduced maritime influence compared to coastal suburbs.
Liverpool's wind patterns are influenced by its position at the confluence of several airflow channels. The Georges River valley acts as a corridor for both the sea breeze (arriving from the northeast via Botany Bay) and cold southerly changes. This gives Liverpool slightly better sea-breeze access than suburbs directly west like Penrith. However, the sea breeze typically arrives by mid-to-late afternoon and is significantly weakened compared to the coast. Westerly winds dominate in winter, occasionally bringing dry air from the interior. Air quality can be a concern during extended calm, hot periods when pollutants from the nearby industrial areas of Moorebank and Chullora accumulate in the river valley, particularly on mornings with temperature inversions.
Liverpool faces a diverse range of severe weather threats. Flash flooding and riverine flooding are the most frequent hazards, with the Georges River catchment responding rapidly to heavy rainfall. The suburb is within Sydney's hail corridor, with supercell thunderstorms capable of producing large hail and damaging winds between October and March. Extreme heat events are increasing in frequency, with Liverpool recording more 35-degree-plus days per decade than in previous climate records. The combination of heat and poor air quality during westerly wind events creates compound health risks. Bushfire risk exists on Liverpool's rural fringe, particularly in the Holsworthy military area to the south, where fire can threaten residential areas under adverse conditions.
Autumn is Liverpool's most pleasant season, with March and April delivering warm but not hot days around 25-28 degrees, low humidity, and reliable clear skies. The Georges River foreshore is at its best during this period, with comfortable conditions for walking, cycling, and fishing. Winter brings cold mornings and mild, sunny days, with occasional fog along the river that burns off by mid-morning. Spring sees rapid warming and the onset of thunderstorm season, with October particularly variable as the weather transitions from winter stability to summer convection. Summer is characterised by heat, occasional storms, and the daily anticipation of whether the sea breeze will reach Liverpool in time to provide evening relief.
See how Liverpool's weather compares to its neighbours: Parramatta weather, Blacktown weather and Cronulla weather. Or browse all Sydney suburb forecasts.