Short version: May through September, with a sweet spot in early summer. Longer version: it depends on your siding, your schedule, and what the weather actually decides to do that year. Here's how we plan exterior seasons in a city that rains this much.
The weather window that matters
Exterior paint has three basic demands. The surface has to be dry, the temperature needs to stay above about 10 degrees including overnight, and the fresh coat needs a rain-free stretch to cure. Miss any of those and you get adhesion problems, blistering, or a finish that fails years early.
In Vancouver, that reliably lines up between May and September. April and October can work, and some years they're lovely, but you're gambling with the forecast. We'd rather move a start date than paint over damp siding, and any painter who says otherwise is painting problems into your walls.
Why booking early beats timing it perfectly
Here's the thing nobody tells you: every painting company's summer calendar starts filling up in February and March. If you wait for the first sunny week of June to start calling around, you'll be choosing from whoever has gaps, not whoever does the best work.
The smart move is to book your estimate in winter or early spring. Quotes are free, there's no obligation, and you get first pick of summer dates. We do walkthroughs year-round for exactly this reason.
What we do differently in a wet city
Our exterior painting process is built around coastal weather. We check siding with a moisture meter before any paint goes on, we spot-prime bare wood the same day it's exposed, and we use 100 percent acrylic coatings made to flex through our freeze-thaw-soak cycles.
The prep changes with the house, too. The cedar siding and shingles on character homes in Dunbar-Southlands need different primers and more careful washing than the stucco we see all over West Point Grey. Getting that match right is most of what separates a ten-year paint job from a four-year one.
What about commercial buildings?
Same weather rules, tighter logistics. Storefronts and strata buildings need scheduling around customers, tenants, and parking, so summer commercial exterior projects get planned even further ahead, often with phased sections so a business never has to close. If you manage a building, spring is honestly the last comfortable moment to lock in a summer repaint.
The honest answer
Best month to paint your exterior in BC? June or July. Best month to start the process? Whichever month it is right now. The estimate, the colour decisions, and the booking all happen long before the ladders come out, so there's no reason to wait for sunshine to get the conversation started.
