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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Southern Monitor Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Merrylands West is currently experiencing the conditions shown in the live forecast above. This western Sydney suburb typically sees warm summers and mild winters, with most rain falling in late summer and early autumn.
What is the typical weather pattern for Merrylands West?
Merrylands West sits in Sydney’s western plains, where summer temperatures often climb several degrees higher than the coast. January is the hottest month, with average maximums around 29°C. Winter nights can drop to 5°C, with frost possible on clear mornings. Rainfall is spread fairly evenly, though February and March tend to be wettest.
How reliable are extended forecasts for this area?
Short-term forecasts (1–3 days) are highly reliable. The weather in merrylands 10 days outlook gives a useful trend but can shift. A merrylands weather 14 day forecast shows broad patterns only. The merrylands weather 30 day forecast is a seasonal guide, not a day-by-day prediction.
Does Merrylands West get thunderstorms?
Yes, especially in spring and summer. The western suburbs are prone to afternoon storms that develop over the Blue Mountains and move east. Hail and heavy rain are possible.
Is it much hotter than the Sydney CBD?
Often yes. On summer days, Merrylands West can be 4–6°C hotter than the coast due to the lack of sea breeze. This difference is most noticeable in January and February.
When is the best time to visit?
Autumn (March to May) offers warm days and lower humidity. Spring (September to November) is also pleasant, though storm risk is higher. Summer can be uncomfortably hot for outdoor activities.
For broader conditions, see our Australia weather hub or the Sydney Weather page. Check Severe Weather Warning updates during storm season.