Mercer Island, Washington, United States of America: What to pack, what to wear, and when to go [2022]

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

Contents

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.


When to go to Mercer Island, Washington, United States of America

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

Important essentials for Mercer Island, Washington, United States of America

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

COVID-19 ESSENTIALS FOR 2022


  • Kids' KN95 masks

    N95 masks aren't sold for kids. These are a good alternative (and can also be used by adults if N95 masks are not available).


  • A vaccine card protector

    Vaccine cards frequently get worn. An unreadable vaccination card can cause severe consequences. This vaccine card protector helps stop that.


  • Hand sanitizer

    This hand sanitizer is a good TSA-friendly option.


  • N95 masks to use in crowded airports

    These N95 masks provide the best level of COVID protection possible.


  • Travel insurance

    If you or a companion get COVID-19, your amazing trip can be ruined. Good travel insurance can help. See plans


  • Travel disinfecting wipes

    Use these to sanitize plane and hotel surfaces.

General health necessities

Don't forget these

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

Already know when you're traveling?

January

January in Mercer Island can be very chilly and very rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 40s F (single digits C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

February

February in Mercer Island can be very chilly and somewhat rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 40s F (single digits C) to low 40s F (single digits C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

March

March in Mercer Island is pretty cool and very rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 40s F (single digits C) to 50s F (low 10s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

April

April in Mercer Island can be chilly and somewhat rainy. The average overnight temperatures in the area are in the low 40s F (single digits C). It tends to rain about half of the time.

What to wear/what to pack:

May

May in Mercer Island is cool and somewhat rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the 60s F (high 10s C), although night temperatures can dip into the 40s F (single digits C).

What to wear/what to pack:

June

If you visit Mercer Island during June, you might see that it is mild. Temperatures tend to hover around the low 60s 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 a bit less than half of the time.

What to wear/what to pack:

July

July for Mercer Island 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:

August

If you visit Mercer Island during August, you may notice 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 occasionally.

What to wear/what to pack:

September

September here is mild. Temperatures average in the low 70s F (low 20s C) during the day. It rains regularly.

What to wear/what to pack:

October

If you go to Mercer Island in October, you will notice that it is cool and somewhat rainy. Expect it to rain about a third of the time. Daytime temperatures are in the low 50s F (mid 10s C).

What to wear/what to pack:

November

If you visit Mercer Island during November, you will probably notice that it is pretty cool 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:

December

If you go to Mercer Island in December, you will notice that it can be brisk and very rainy. Expect it to rain about half of the time. Daytime temperatures are in the 40s F (single digits C).

What to wear/what to pack:

Activities for Mercer Island, Washington, United States of America

Here are some activity recommendations and activity-specific packing tips for Mercer Island.

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