SeaTac weather in January (Washington State, United States of America)

Interested in knowing the climate of SeaTac in January? Here's what you need to know about the weather for the month.

Temperatures

During January, SeaTac usually has low temperatures and high rainfall. During January, the winter season is in full swing. During the daylight hours, temperatures often reach 8°C. After dark they usually decrease to around 2°C.

Precipitation

SeaTac in January usually receives high rainfall, averaging around 141 mm for the month. Expect around 19 days of rain based on historical data.

Average sunshine

The city usually sees around 70 hours of sunlight, indicating fewer sunny days.

If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit SeaTac. 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 SeaTac climate page with graphs.

 

SeaTac, monthly averages in January

Min Temperature 2°C  

Max Temperature 8°C  

Chance of Rain 62%  

Precipitation 141 mm  

Rainy days 19 days  

Humidity 78% *  

Windspeed 18 km/h *  

Sunshine 70 hours *  

Percentage Sunshine 25% *  

Where to go in the United States of America in January

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 SeaTac.

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.