Portland vs Vancouver: which is better, month by month

Portland beats Vancouver in 6 of 12 months — its lead peaks in September (94 vs 82) — while Vancouver wins July to August; they are within 3 points in February to May.

Each place is scored under the lens that suits its type. Comfort is SeasonMap's 0–100 estimate from ERA5 climate normals, not a forecast.

Portland

🇺🇸 United States · mild climate

Best month: June 96/100
Months won: 6 of 12

Vancouver

🇨🇦 Canada · mild climate

Best month: July 97/100
Months won: 2 of 12

Portland vs Vancouver — all 12 months

Month	Portland	Vancouver	Winner	Gap
January	49Fcold, soaked, clean air	44Fcold, soaked, clean air	Portland	5
February	55Dcold, rainy, clean air	54Dcold, rainy, clean air	Tie	1
March	65Ccool, rainy, clean air	62Ccold, rainy, clean air	Tie	3
April	76Bcool, rainy, clean air	73Bcool, rainy, clean air	Tie	3
May	86Anice, a little rain, clean air	84Anice, a little rain, clean air	Tie	2
June	96Swarm, a little rain, clean air	89Anice, a little rain, clean air	Portland	7
July	92Swarm, dry, clean air	97Swarm, dry, clean air	Vancouver	5
August	89Awarm, dry, clean air	94Swarm, dry	Vancouver	5
September	94Swarm, a little rain, clean air	82Anice, a little rain, clean air	Portland	12
October	72Bnice, rainy, clean air	65Ccool, rainy, clean air	Portland	7
November	57Dcool, soaked, clean air	49Fcold, soaked, clean air	Portland	8
December	45Fcold, soaked, clean air	40Fcold, soaked, clean air	Portland	5

A month is a tie when the two are within 3 points. The widest gap is September (94 vs 82). Tap a month for that month's temperature, rain, humidity and air quality side by side.