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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Down Under Brief Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out on the M2 or into the Cumberland Plain, as West Pennant Hills often catches a different breeze to the Sydney coast. Sheltered between the Parramatta River valley and the Hills District ridgeline, the suburb’s afternoon sea-breeze can arrive later than in the city, shifting conditions quickly.
What makes West Pennant Hills weather different from the Sydney CBD?
Sitting about 170 metres above sea level on the Hornsby Plateau, West Pennant Hills is noticeably cooler in summer than lower suburbs like Parramatta. Mornings in winter can dip a few degrees colder than the city, with frost possible in local gullies near Hunts Creek and the Lane Cove River catchment. The rain shadow from the Blue Mountains is less pronounced here, so afternoon storms often develop energetically along the ridgeline before drifting east.
When should I expect storms or fog?
Thunderstorms are most common from October to March, especially when humid northerlies meet the ridge. Fog forms in the early morning from May to August, particularly around the M2 motorway and near Old Northern Road, clearing by mid-morning.
Is West Pennant Hills weather similar to Pennant Hills?
Very similar—both sit on the same plateau. The main difference is that West Pennant Hills, further from the Lane Cove River valley, can be slightly drier in easterly flows. Check the west pennant hills weather hourly update for your exact street to spot local variations.
Where can I find west Pennant Hills weather hourly details?
For fine-grained updates, weather west pennant hills weatherzone hourly pages show wind shifts, temperature changes and rain radar. BOM’s Sydney Metro forecast also covers the Hills District, but the local ridgeline can tweak temperatures by a degree or two.
Does West Pennant Hills flood?
Flash flooding occurs rarely, mainly near Terrys Creek and Devlins Creek after heavy downpours. Most properties on the ridge are well-drained. Always check the live forecast above and local warnings before storms.
Sources
For broader conditions, see our Australia weather hub or the Sydney Weather page. If you’re comparing capitals, check Melbourne Weather and Brisbane Weather for interstate travel planning.