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

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

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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 Sumas, Washington, United States of America

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

Important essentials for Sumas, Washington, United States of America

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

COVID-19 ESSENTIALS FOR 2022


  • N95 masks to use in crowded airports

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


  • Travel disinfecting wipes

    Use these to sanitize plane and hotel surfaces.


  • Hand sanitizer

    This hand sanitizer is a good TSA-friendly choice.


  • 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).


  • Travel insurance

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


  • A vaccine card protector

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

General health necessities

Don't forget these

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

Already know when you're traveling?

January

January in Sumas is cold and snowy. The snow can amount to several inches/centimeters. During this time, temperatures average in the low 40s F (single digits C), although night temperatures can dip into the low 20s F (single digits below 0 C).

What to wear/what to pack:

February

February in Sumas can be brisk. The average overnight temperatures in the area are in the low 30s F (single digits C).

What to wear/what to pack:

March

March in Sumas can be brisk. The rain can amount to several inches/centimeters. During this time, temperatures average in the 40s F (single digits C) to low 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

If you visit Sumas during April, you might see that it is relatively cool. Temperatures tend to hover around the high 50s F (mid 10s C) during the day, while at night they can dip into the high 30s F (single digits C).

What to wear/what to pack:

May

In May, Sumas is mild. 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 low 40s F (single digits C). This is also a rainy time for Sumas, with several of the days of the month having rain.

What to wear/what to pack:

June

If you vacation in Sumas during June, you will probably 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 high 40s F (single digits C).

What to wear/what to pack:

July

Traveling to Sumas in July, you will notice that it is warm. Daytime temperatures are in the 70s F (mid 20s C).

What to wear/what to pack:

August

If you are traveling to Sumas in August, you will notice that it is warm. Daytime temperatures are in the 70s F (mid 20s C).

What to wear/what to pack:

September

September is balmy. Temperatures average in the low 70s F (low 20s C) during the day.

What to wear/what to pack:

October

In October, Sumas is cool. Temperatures routinely are in the low 50s F (mid 10s C) and about half of the time jump into the low 60s F (mid 10s C) range. At night, lows are in the low 40s F (single digits C). This is also a rainy time for Sumas, with several of the days of the month having rain.

What to wear/what to pack:

November

If you visit Sumas during November, you may see that it is pretty cool. 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).

What to wear/what to pack:

December

In December, Sumas is cold. Temperatures routinely are in the low 40s F (single digits C) and occasionally jump into the low 50s F (single digits C) range. At night, lows are in the low 30s F (single digits below 0 C). During your visit, you can expect several inches of snow. This is also a rainy time for Sumas, with more than half of the days of the month having rain.

What to wear/what to pack:

Activities for Sumas, Washington, United States of America

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

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