What is the weather like in Seattle vs Whistler in September?

In September, Seattle averages 21°C high / 12°C low with about 36 mm of rain; Whistler averages 19°C high / 7°C low with about 97 mm.

Seattle vs Whistler in September

Seattle is the better pick in September — 89 vs 18 on SeasonMap's comfort score. Seattle is nice, a little rain, clean air, while Whistler is nice, rainy, clean air.

Seattle vs Whistler — September climate, side by side

	🇺🇸 Seattle	🇨🇦 Whistler
Comfort score	89/100 (A)	18/100 (F)
Feels-like high	21°C	19°C
Avg high / low	21° / 12°	19° / 7°
Rainfall	36 mm	97 mm
Rainy days	6	10
Humidity	75%	79%
Air quality (AQI)	40	32

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

Month by month

Seattle vs Whistler in September — FAQ

Is September better in Seattle or Whistler?: Seattle is the better pick in September — 89 vs 18 on SeasonMap's comfort score. Seattle is nice, a little rain, clean air, while Whistler is nice, rainy, clean air.
What is the weather like in Seattle vs Whistler in September?: In September, Seattle averages 21°C high / 12°C low with about 36 mm of rain; Whistler averages 19°C high / 7°C low with about 97 mm.