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

In December, Portland averages 8°C high / 4°C low with about 184 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.

Portland vs Seattle in December

Seattle is the better pick in December — 49 vs 45 on SeasonMap's comfort score. Seattle is cold, rainy, clean air, while Portland is cold, soaked, clean air.

Portland vs Seattle — December climate, side by side

	🇺🇸 Portland	🇺🇸 Seattle
Comfort score	45/100 (F)	49/100 (F)
Feels-like high	6°C	5°C
Avg high / low	8° / 4°	8° / 2°
Rainfall	184 mm	103 mm
Rainy days	18	14
Humidity	88%	87%
Air quality (AQI)	34	38

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

Month by month

Portland 🇺🇸 United Statescold, soaked, clean air · best June45
Seattle 🇺🇸 United Statescold, rainy, clean air · best July49

Portland vs Seattle in December — FAQ

Is December better in Portland or Seattle?: Seattle is the better pick in December — 49 vs 45 on SeasonMap's comfort score. Seattle is cold, rainy, clean air, while Portland is cold, soaked, clean air.
What is the weather like in Portland vs Seattle in December?: In December, Portland averages 8°C high / 4°C low with about 184 mm of rain; Seattle averages 8°C high / 2°C low with about 103 mm.