Cool
Average highs are around 7°C, so pack for cooler days.
December verdict
Portland, Oregon, United States in December
Weather score10Poor
Poor for holiday weather
Average highs are around 7°C, so pack for cooler days. Sunshine averages 2h per day, so this is not one of the brighter months. Rainfall averages 179mm, so some wet days are possible.
December weather
Monthly averages
Temp
7°C
Rain
179mm
Sun
2h
Weather score
10
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 179mm, so some wet days are possible.
Limited sun
Sunshine averages 2h per day, so this is not one of the brighter months.
Map
Weather map
Compare Portland, Oregon, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December7°C average high
December has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December179mm average rain
December is one of Portland's wettest months, so rain is likely to be a major planning factor.
Driest monthsApril to September
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December2 hours average sun
December is one of Portland's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
December10 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJune to August
These months have the strongest weather score in the monthly averages.
Hotels in Portland, Oregon, United States
Marriott
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