What is the weather like in Portland vs Vancouver in September?

In September, Portland averages 24°C high / 14°C low with about 46 mm of rain; Vancouver averages 19°C high / 12°C low with about 77 mm.

Portland vs Vancouver in September

Portland is the better pick in September — 94 vs 82 on SeasonMap's comfort score. Portland is warm, a little rain, clean air, while Vancouver is nice, a little rain, clean air.

Portland vs Vancouver — September climate, side by side

	🇺🇸 Portland	🇨🇦 Vancouver
Comfort score	94/100 (S)	82/100 (A)
Feels-like high	24°C	19°C
Avg high / low	24° / 14°	19° / 12°
Rainfall	46 mm	77 mm
Rainy days	5	8
Humidity	67%	80%
Air quality (AQI)	33	46

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Portland vs Vancouver in September — FAQ

Is September better in Portland or Vancouver?: Portland is the better pick in September — 94 vs 82 on SeasonMap's comfort score. Portland is warm, a little rain, clean air, while Vancouver is nice, a little rain, clean air.
What is the weather like in Portland vs Vancouver in September?: In September, Portland averages 24°C high / 14°C low with about 46 mm of rain; Vancouver averages 19°C high / 12°C low with about 77 mm.