Portland weather in December (Oregon, United States of America)

What is the weather forecast for Portland in December? Use this page to get an overview of the month’s weather conditions.

Temperatures

Typically, December in Portland includes low temperatures and heavy rainfall. December is known for being in the winter season. During the daylight hours, temperatures often reach 7°C. After dark they usually decrease to around 2°C. This month is known for being the coldest, so make sure you pack appropriately with plenty of warm clothing.

Precipitation

Portland in December usually receives heavy rainfall, averaging around 179 mm for the month. This month experiences the most intense rain of the year, with heavy showers. Be prepared with a poncho to stay dry. Historically, approximately 20 days this month are expected to have rain.

Average sunshine

This month sees fewer sunny days, with about 64 hours of sunshine, perfect for those who enjoy cooler temperatures.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Portland. May, June, July, August and September typically offer the best circumstances. While January, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Portland climate page with graphs.

 

Portland, monthly averages in December

Min Temperature 2°C  

Max Temperature 7°C  

Chance of Rain 67%  

Precipitation 179 mm  

Rainy days 20 days  

Humidity 83%  

Windspeed 11 km/h  

Sunshine 64 hours  

Percentage Sunshine  

Where to go in the United States of America in December

Find out more about the weather in the United States of America and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Wear a base layer in cold weather; this is the #1 thing you can do to increase your overall body temperature.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

3/10

Outdoor sports

4/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Portland.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.