King County, Washington, United States of America: What to pack, what to wear, and when to go [2023]

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Ready to pack for King County, Washington, United States of America? If you're planning to go to King County, we've got some important information about when to go, what to wear, and what to pack.

Contents

When to go to King County, Washington, United States of America

Based on the climate and weather in King County, Washington, United States of America, the best time to go is July. See below for details.

What to wear/what to pack for King County, Washington, United States of America

Already know when you're traveling?

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

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

January

In January, King County can be very chilly and very rainy. Temperatures routinely are in the high 40s F (single digits C) and a bit less than 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 King County, with more than half of the days of the month having rain.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airlines frequently losing luggage these days, an AirTag can find it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Travel adapter

    A plug adapter that supports outlet types A and B. Take care to get the right kind. The majority of adapters available online are just plugs and expect your electronics to convert the voltage themselves. If yours can't do that they could get fried. This one should be appropriate for most areas.

  • Travel neck support pillow

    A great choice is this one

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

February

February in King County can be very chilly and somewhat 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:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airports frequently losing bags nowadays, an AirTag can help you locate it anywhere in the world: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your things.

Comfort + Essentials

  • Travel neck support pillow

    A great choice is this one

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Ensure that you find the necessary kind. A lot of adapters available online are simply plugs and require your electronics to change the voltage themselves. If your electronics can't do that they could burn up. This one is sufficent for most places.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge excessive prices for overweight luggage. Avoid penalties with this

  • Power bank for devices

    A portable power bank, like this one

March

March in King County 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:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airports frequently losing luggage recently, an AirTag can find it anywhere anywhere: AirTag for iPhones.

Comfort + Essentials

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to get the right type. A lot of adapters available are just plugs and expect your devices to change the voltage themselves. If your devices can't do that they could burn up. This one works in most locations.

  • Travel neck pillow

    A top rated pillow is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Save money with this

  • Power bank for devices

    A portable power bank, like this one

April

If you are traveling to King County in April, you will notice that it is chilly and somewhat rainy. Expect it to rain about half of the time. Daytime temperatures are in the high 50s F (mid 10s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airports constantly losing things recently, an AirTag can locate it anywhere on earth: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Take care to find the right type. Many adapters currently available are just plugs and require your devices to adjust the voltage themselves. If yours can't do that they could get fried. This one should be sufficient for most places.

  • Travel neck pillow

    Our fave is this one

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Avoid surcharges with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

May

May in King County is relatively cool and somewhat rainy. The average overnight temperatures in the area are in the high 40s F (single digits C). It tends to rain regularly.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • AirTag to track your luggage

    With airports repeatedly losing things recently, an AirTag can find it anywhere in the world: AirTag for iPhones.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck support pillow

    Our favorite is this one

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Avoid surcharges with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Be sure to choose the necessary type. A lot of adapters currently being sold are simply plugs and require your electronics to adjust the voltage themselves. If your electronics can't do that they could get destroyed. This one should be sufficient for most countries.

June

June here is balmy. Temperatures average in the low 60s F (low 20s C) during the day. It rains a bit less than half of the time.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

  • AirTag to track your luggage

    With airlines frequently losing bags nowadays, an AirTag can help you locate it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Travel neck support pillow

    Our favorite is this one

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Take care to pick the correct kind. A lot of adapters on sale are just plug changers and require your devices to change the voltage themselves. If your electronics can't do that they could get fried. This one works in most locations.

  • Luggage scale to avoid fees

    Airlines charge excessive prices for overweight luggage. Avoid surcharges with this

July

If you visit King County during July, you will probably see 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:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your things.

  • AirTag to track your luggage

    With airports constantly losing bags nowadays, an AirTag can find it anywhere anywhere: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials

  • Travel pillow

    A good option is this one

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge large amounts for overweight luggage. Save money with this

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. It's important that you find the correct type. Most adapters currently sold are simply plugs and require your electronics to change the voltage themselves. If yours can't do that they could burn up. This one is sufficent for most locations.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

August

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

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your stuff.

  • AirTag to track your luggage

    With airports always losing things these days, an AirTag can find it anywhere on earth: AirTag for iPhones.

Comfort + Essentials

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to choose the necessary kind. Many adapters currently being sold are simply plugs and require your electronics to convert the voltage themselves. If yours can't do that they could get destroyed. This one works in most countries.

  • Travel neck support pillow

    What we like is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Luggage scale to avoid fees

    Airlines charge huge penalties for overweight luggage. Avoid surcharges with this

  • Power bank for devices

    A portable power bank, like this one

September

Traveling to King County in September, you will notice that it is mild. Expect it to rain a bit less than half of the time. Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airports constantly losing bags nowadays, an AirTag can locate it anywhere anywhere: AirTag for iPhones.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your things.

Comfort + Essentials

  • Power bank for devices

    A portable power bank, like this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to choose the correct kind. Many adapters that you can buy are simply plugs and require your devices to convert the voltage themselves. If yours can't do that they could burn up. This one is sufficent for most areas.

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid penalties with this

  • Travel neck pillow

    A great choice is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

October

October in King County is cool and somewhat rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 50s F (mid 10s C), although night temperatures can dip into the 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

  • AirTag to track your luggage

    With airports constantly losing luggage nowadays, an AirTag can locate it anywhere in the world: AirTag for iPhones.

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to find the necessary kind. Most adapters that you can buy are just plug changers and require your devices to convert the voltage themselves. If your electronics can't do that they could burn up. This one should work in most areas.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge large prices for overweight luggage. Avoid penalties with this

  • Travel pillow

    A versatile choice is this one

November

If you vacation in King County during November, you are likely to see that it is cold and very rainy. Temperatures tend to hover around the low 50s F (low 10s C) during the day, while at night they can dip into the low 40s 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:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • AirTag to track your luggage

    With airlines frequently losing luggage recently, an AirTag can find it anywhere anywhere: AirTag for iPhones.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials

  • Luggage scale to avoid fees

    Airlines charge huge amounts for overweight luggage. Avoid surcharges with this

  • Travel neck pillow

    A top rated pillow is this one

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Ensure that you choose the necessary type. Most adapters on sale are just plug changers and require your devices to convert the voltage themselves. If yours can't do that they could burn up. This one should be sufficient for most countries.

December

In December, King County can be brisk and very rainy. Temperatures routinely are in the 40s F (single digits C) and 5-10 days this month jump into the low 50s F (single digits C) range. At night, lows are in the 30s F (single digits C). During your visit, you can expect a couple of inches of snowfall. This is also a rainy time for King County, with more than half of the days of the month having rain.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security

  • Voice and data SIM card

    A SIM card that works in King County. A good global SIM card works in most countries, but check the country list before buying.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • AirTag to track your luggage

    With airports repeatedly losing luggage nowadays, an AirTag can help you find it anywhere in the world: AirTag for iPhones.

Comfort + Essentials

  • Travel pillow

    Our fave is this one

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to choose the right type. Many adapters that you can buy are simply plugs and expect your electronics to adjust the voltage themselves. If your electronics can't do that they could get destroyed. This one should work in most areas.

  • Power bank for devices

    A portable power bank, like this one

  • Luggage scale to avoid fees

    Airlines charge large amounts for overweight luggage. Avoid penalties with this

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

About your travel guide

Hi! I'm Dev. I've traveled all over the world and in my travels, I have made many packing lists. In this series, my team and I have compiled the most useful information, as well as things we couldn't live without, to help you plan your trip.

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