What is the weather like in Portland vs Seattle in August?

In August, Portland averages 28°C high / 16°C low with about 8 mm of rain; Seattle averages 25°C high / 15°C low with about 12 mm.

Portland vs Seattle in August

Seattle is the better pick in August — 95 vs 89 on SeasonMap's comfort score. Seattle is warm, dry, clean air, while Portland is warm, dry, clean air.

Portland vs Seattle — August climate, side by side

	🇺🇸 Portland	🇺🇸 Seattle
Comfort score	89/100 (A)	95/100 (S)
Feels-like high	28°C	25°C
Avg high / low	28° / 16°	25° / 15°
Rainfall	8 mm	12 mm
Rainy days	1	2
Humidity	57%	67%
Air quality (AQI)	34	44

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

Month by month

Portland 🇺🇸 United Stateswarm, dry, clean air · best June89
Seattle 🇺🇸 United Stateswarm, dry, clean air · best July95

Portland vs Seattle in August — FAQ

Is August better in Portland or Seattle?: Seattle is the better pick in August — 95 vs 89 on SeasonMap's comfort score. Seattle is warm, dry, clean air, while Portland is warm, dry, clean air.
What is the weather like in Portland vs Seattle in August?: In August, Portland averages 28°C high / 16°C low with about 8 mm of rain; Seattle averages 25°C high / 15°C low with about 12 mm.