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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Oz Reviewly Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
The weather near Merrylands NSW is currently mild and mostly clear, as shown in the live forecast above. Expect typical autumn conditions with daytime temperatures around 24 degrees Celsius and light winds from the northeast.
What is the usual weather pattern for Merrylands right now?
Autumn in Merrylands brings warm days and cooler nights. The average high for this time of year is 23 to 25 degrees Celsius. Rainfall is moderate, with around 50 to 70 millimetres expected for the month. Mornings can be foggy, especially near creeks and low-lying areas. Afternoon sea breezes often pick up from the east, particularly after hot inland days.
How does the local geography affect the weather?
Merrylands sits on the Cumberland Plain, roughly 25 kilometres west of the Sydney CBD. This inland position means it tends to be a few degrees warmer than the coast on summer afternoons. The Blue Mountains to the west block some westerly weather systems, but can also funnel cool changes through the area. Localised storms are common in spring and summer, with the risk of flash flooding in low-lying streets near Merrylands Road.
Does Merrylands get frost in winter?
Yes, frost can occur on clear winter mornings, especially in open parks and near the M4 motorway. Temperatures occasionally drop below 2 degrees Celsius in July and August.
What is the hottest month in Merrylands?
January is typically the hottest month, with average maximums around 29 degrees Celsius. Heatwaves can push temperatures above 40 degrees, often accompanied by strong westerly winds.
Is there a severe weather risk in Merrylands?
Yes, severe thunderstorms with large hail and damaging winds occur mostly from October to February. Flash flooding is also possible during heavy rain events. You can check local warnings via the Severe Weather Warning page.
For broader conditions across New South Wales, view the Australia weather hub or the Sydney Weather page for regional updates.