Seattle weather in December (Washington State, United States of America)

Interested in knowing the climate of Seattle in December? Our page offers a comprehensive look at the weather you can expect this month.

Temperatures

The typical weather for December in Seattle includes low temperatures and high rainfall. The winter season is characteristic of December. Daytime temperatures generally settle around 8°C, while nighttime can see a dip to about 2°C. It's often the coldest month of the year, a perfect time to cozy up indoors. Make sure to bring along suitable winter clothing.

Precipitation

Seattle in December usually receives high rainfall, averaging around 143 mm for the month. Based on our climate data of the past 30 years, about 20 days of rain are anticipated.

Average sunshine

This month sees fewer sunny days, with about 54 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 Seattle. June, July, August and September typically offer the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

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

 

Seattle, monthly averages in December

Min Temperature 2°C  

Max Temperature 8°C  

Chance of Rain 66%  

Precipitation 143 mm  

Rainy days 20 days  

Humidity 80%  

Windspeed 14 km/h  

Sunshine 54 hours  

Percentage Sunshine 20%  

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 Seattle.

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.