SeaTac, Washington, United States of America: What to pack, what to wear, and when to go [2018]

Traveling to SeaTac, Washington, United States of America? If you're planning to go to SeaTac, here is some important information about when to go, what to wear, and what to pack:

When to go to SeaTac, Washington, United States of America

Based on the climate and weather in SeaTac, the best time to go is July. See below for details.

What to wear/what to pack for SeaTac, Washington, United States of America by month

January

January in SeaTac can be brisk and very rainy. The average overnight temperatures in the area are in the high 30s F (single digits C). It tends to rain about half of the time.

What to wear/what to pack:

  • Rain coat
  • Waterproof luggage
  • Warm pants or jeans
  • Standard footwear
  • Jacket or coat
  • Light gloves or mittens
  • Umbrella
  • Waterproof footwear
  • Fleeces
  • Socks

February

In February, SeaTac can be very chilly and somewhat rainy. Temperatures routinely are in the low 40s F (single digits C) and about half of the time jump into the low 50s F (single digits C) range. At night, lows are in the high 30s F (single digits C).

During your visit, you can expect a couple of inches of snowfall. This is also a rainy time for SeaTac, with more than half of the days of the month having rain.

What to wear/what to pack:

  • Rain coat
  • Standard footwear
  • Umbrella
  • Socks
  • Jacket or coat
  • Waterproof luggage
  • Waterproof footwear
  • Warm pants or jeans
  • Fleeces
  • Light gloves or mittens

March

March in SeaTac is brisk and very rainy. The average overnight temperatures in the area are in the high 30s F (single digits C). It tends to rain about half of the time.

What to wear/what to pack:

  • Waterproof luggage
  • Umbrella
  • Jacket or coat
  • Fleeces
  • Standard footwear
  • Socks
  • Rain coat
  • Light gloves or mittens
  • Waterproof footwear
  • Warm pants or jeans

April

April in SeaTac is cool and somewhat rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 50s F (low 10s C) to high 50s F (mid 10s C), although night temperatures can dip into the low 40s F (single digits C).

What to wear/what to pack:

  • Umbrella
  • Rain coat
  • Light jacket or fleece
  • Dresses
  • Socks
  • Waterproof luggage
  • Standard footwear
  • Long skirts
  • Waterproof footwear
  • Long sleeve shirts or blouses
  • Pants or jeans

May

In May, SeaTac is relatively cool and somewhat rainy. Temperatures routinely are in the 60s F (high 10s C) and regularly jump into the low 70s F (low 20s C) range.

At night, lows are in the high 40s F (single digits C). This is also a rainy time for SeaTac, with several of the days of the month having rain.

What to wear/what to pack:

  • Standard footwear
  • Waterproof luggage
  • Pants or jeans
  • Rain coat
  • Umbrella
  • Long skirts
  • Dresses
  • Light jacket or fleece
  • Socks
  • Long sleeve shirts or blouses
  • Waterproof footwear

June

June in SeaTac is mild. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 60s F (mid 10s C) to low 60s F (low 20s C), although night temperatures can dip into the low 50s F (single digits C).

What to wear/what to pack:

  • Long skirts
  • Umbrella
  • Pants or jeans
  • Waterproof luggage
  • Long sleeve shirts or blouses
  • Waterproof footwear
  • Standard footwear
  • Rain coat
  • Socks
  • Light jacket or fleece
  • Dresses

July

If you visit SeaTac during July, you are likely to find that it is warm. Temperatures tend to hover around the 70s F (mid 20s C) during the day, while at night they can dip into the 50s F (low 10s C).

In terms of precipitation, you can expect it to rain once in a while.

What to wear/what to pack:

  • Skirts
  • Sandals
  • Waterproof footwear
  • Dresses
  • Rain coat
  • Long and short sleeve shirts
  • Light footwear
  • Sunscreen lotion
  • Umbrella
  • Waterproof luggage
  • Shorts or short pants

August

August is a perfect temperature. Temperatures average in the 70s F (mid 20s C) during the day. It rains sometimes.

What to wear/what to pack:

  • Long and short sleeve shirts
  • Skirts
  • Sandals
  • Sunscreen lotion
  • Shorts or short pants
  • Rain coat
  • Dresses
  • Umbrella
  • Waterproof footwear
  • Waterproof luggage
  • Light footwear

September

If you visit SeaTac during September, you are likely to find that it is mild. Temperatures tend to hover around the low 70s F (low 20s C) during the day, while at night they can dip into the low 50s F (low 10s C).

In terms of precipitation, you can expect it to rain 5-10 days this month.

What to wear/what to pack:

  • Sunscreen lotion
  • Skirts
  • Waterproof footwear
  • Shorts or short pants
  • Light footwear
  • Dresses
  • Umbrella
  • Sandals
  • Waterproof luggage
  • Long and short sleeve shirts
  • Rain coat

October

If you go to SeaTac in October, you will notice that it can be chilly and somewhat rainy. Expect it to rain a bit less than half of the time.

Daytime temperatures are in the low 50s F (mid 10s C).

What to wear/what to pack:

  • Pants or jeans
  • Standard footwear
  • Long skirts
  • Umbrella
  • Long sleeve shirts or blouses
  • Socks
  • Rain coat
  • Dresses
  • Waterproof luggage
  • Light jacket or fleece
  • Waterproof footwear

November

If you are traveling to SeaTac in November, you will notice that it can be very chilly and very rainy. Expect it to rain about half of the time. Daytime temperatures are in the low 50s F (low 10s C).

What to wear/what to pack:

  • Standard footwear
  • Waterproof luggage
  • Rain coat
  • Light jacket or fleece
  • Socks
  • Long sleeve shirts or blouses
  • Umbrella
  • Dresses
  • Waterproof footwear
  • Pants or jeans
  • Long skirts

December

If you vacation in SeaTac during December, you are likely to find that it can be very chilly and very rainy. Temperatures tend to hover around the 40s F (single digits C) during the day, while at night they can dip into the 30s F (single digits C).

In terms of precipitation, you can expect it to rain about half of the time.

What to wear/what to pack:

  • Waterproof luggage
  • Light gloves or mittens
  • Standard footwear
  • Socks
  • Fleeces
  • Jacket or coat
  • Rain coat
  • Umbrella
  • Warm pants or jeans
  • Waterproof footwear

Year-round what to wear/what to pack for SeaTac, Washington, United States of America

Here are some general tips on what to wear in SeaTac, as well as several items to remember to pack when traveling there.

  • A plug adadpter that supports outlet types A and B
  • A SIM card that works in SeaTac

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