San Juan Islands, Washington, United States of America: What to pack, what to wear, and when to go [2022]

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Traveling to San Juan Islands, Washington, United States of America? If you're planning to go to San Juan Islands, we have 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 San Juan Islands, Washington, United States of America

Based on the climate and weather in San Juan Islands, the best time to go is August. See below for details.

Important essentials for San Juan Islands, Washington, United States of America

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

COVID-19 ESSENTIALS FOR 2022


  • Travel disinfecting wipes

    Use these to sanitize plane and hotel surfaces.


  • Hand sanitizer

    This hand sanitizer is a good plane-friendly product.


  • A vaccine card protector

    Vaccine cards frequently wear out. An unreadable vaccine card can cause severe consequences. This vaccine card protector helps stop that.


  • 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


  • Kids' KN95 masks

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

General health necessities

Don't forget these

What to wear/what to pack for San Juan Islands, Washington, United States of America by month

Already know when you're traveling?

January

In January, San Juan Islands is cold 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). This is also a rainy time for San Juan Islands, with more than half of the days of the month having rain. In January, humidity reaches as high as 80%.

What to wear/what to pack:

February

If you vacation in San Juan Islands during February, you may see that it is brisk and somewhat rainy. Temperatures tend to hover around the high 40s F (single digits C) during the day, while at night they can dip into the 30s F (single digits C). Humidity is generally around 70.1 during the day. In terms of precipitation, you can expect it to rain about half of the time.

What to wear/what to pack:

March

Traveling to San Juan Islands in March, you will notice that it is cold and somewhat 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:

April

In April, San Juan Islands is chilly and somewhat rainy. Temperatures routinely are in the 50s F (mid 10s C) range. At night, lows are in the low 30s F (single digits C). This is also a rainy time for San Juan Islands, with several of the days of the month having rain. In April, humidity reaches as high as 70%.

What to wear/what to pack:

May

May here is chilly and somewhat rainy. Temperatures average in the low 60s F (high 10s C) during the day. It rains 5-10 days this month.

What to wear/what to pack:

June

June in San Juan Islands is mild and somewhat rainy. Temperatures average in the high 60s F (low 10s C) during the day. It rains regularly.

What to wear/what to pack:

July

If you are traveling to San Juan Islands in July, you will notice that it is balmy. Expect it to rain once in a while. Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

August

If you visit San Juan Islands during August, you will probably see that it is balmy. 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). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain once in a while.

What to wear/what to pack:

September

September in San Juan Islands is mild. The average overnight temperatures in the area are in the high 40s F (single digits C). It tends to rain 5-10 days this month. But the colder weather doesn't bring low humidity, which is in the 60% to 60% range on average.

What to wear/what to pack:

October

If you visit San Juan Islands during October, you will probably see that it is crisp and somewhat rainy. Temperatures tend to hover around the high 50s F (mid 10s C) during the day, while at night they can dip into the low 40s F (single digits C). Humidity is generally between 60 and 70% during the day. In terms of precipitation, you can expect it to rain about half of the time.

What to wear/what to pack:

November

November in San Juan Islands is cold 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 30s F (single digits C).

What to wear/what to pack:

December

If you go to San Juan Islands in December, you will notice that it is pretty cool 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 San Juan Islands, Washington, United States of America

Here are some activity recommendations and activity-specific packing tips for San Juan Islands.

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