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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the BuzzLayer Weather Desk. Data from Environment and Climate Change Canada 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 water or up the Malahat, as Mill Bay’s coastal valley location can shift conditions quickly between the Saanich Inlet and the Cowichan Valley.
What makes Mill Bay’s weather different from nearby communities?
Mill Bay sits on the west side of Saanich Inlet, sheltered from the open Pacific by the Malahat range. This creates a rain-shadow effect that often keeps Mill Bay drier than Vancouver or Victoria, but fog and low cloud can linger longer in the inlet than in inland Duncan. The Malahat summit, just above town, frequently sees snow or freezing levels when Mill Bay remains above zero.
What should I expect for seasonal conditions?
Summers are warm and dry, with afternoon sea breezes off the inlet. Winters are mild and wet, though snowfall is rare at sea level—most winter precipitation falls as rain. Spring and autumn bring the most variable conditions, with morning fog burning off by midday. For detailed hourly changes, check mill bay weather hourly updates from the live feed above.
How does Mill Bay weather compare to Duncan weather?
Duncan, 10 km inland, is slightly warmer in summer and cooler in winter due to less marine influence. Mill Bay gets more fog and stronger afternoon breezes off the inlet, while Duncan sees more frost on clear nights.
Is the Malahat affected by Mill Bay weather?
Yes. When Mill Bay has rain, the Malahat often gets snow above 300 m. Check malahat weather and mill bay weather environment canada reports before driving the highway in winter.
Where can I find a mill bay weather 14 day outlook?
The live forecast above includes a 14-day trend. For longer-range planning, combine that with Canada weather hub data and local marine forecasts for Saanich Inlet.