Why is Vancouver so warm?

Vancouver is right on the sea. If weather was random, half the time the wind would blow off the sea (or from the Pacific Ocean a bit further away), tending to give us wind that's comparable to the sea temperature just because the surface wind is in contact with the sea surface for so long. read more

So cities on the sea tend to have much more temperate climates (cool in summer, warm in winter) than those far inland, everywhere, as a general principle. Vancouver is warmer than Toronto (or even Kelowna) in winter, cooler in summer. read more

This is why Vancouver is always so cloudy and rainy. The clouds act as a ceiling to keep the warm air from leaving; if you've ever noticed, a rare clear sky in the winter in Vancouver is unusually cold. read more

The passing of these cyclones creates large variations of temperature, so at some points in time, Vancouver may be warmer than some locations on the east coast. Later, it might be colder than some locations on the east coast. read more