Iwamizawa, Japan: What to pack, what to wear, and when to go [2021]

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Traveling to Iwamizawa, Japan? If you're planning to go to Iwamizawa, here is some important information about when to go, what to wear, and what to pack.

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When to go to Iwamizawa, Japan

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

Important esssentials for Iwamizawa, Japan

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

What to wear/what to pack for Iwamizawa, Japan by month

January

January in Iwamizawa is very cold and extremely snowy. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the high 20s F (single digits below 0 C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

February

In February, Iwamizawa is very cold and extremely snowy. Temperatures routinely are in the low 30s F (single digits below 0 C) range. At night, lows are in the 10s F (single digits below 0 C).

This is also a rainy time for Iwamizawa, with a few of the days of the month having rain. In February, humidity reaches as high as 70%.

What to wear/what to pack:

March

If you go to Iwamizawa in March, you will notice that it can be extremely cold and extremely snowy. Expect it to rain regularly and snow almost every day of the month.

Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

April

April in Iwamizawa can be very chilly and very rainy. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 40s F (single digits C) to low 50s F (single digits C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

May

May is cool and extremely rainy. Temperatures average in the low 60s F (high 10s C) during the day. It rains most days.

What to wear/what to pack:

June

If you are traveling to Iwamizawa in June, you will notice that it is mild and very rainy. Expect it to rain most days. Daytime temperatures are in the low 60s F (low 20s C).

What to wear/what to pack:

July

July is warm and very rainy. Temperatures average in the 70s F (mid 20s C) during the day. It rains about two thirds of the time.

What to wear/what to pack:

August

August in Iwamizawa is a perfect temperature and very rainy. Temperatures average in the high 70s F (mid 20s C) during the day. It rains most days.

What to wear/what to pack:

September

September in this region is mild and extremely rainy. Temperatures average in the low 60s F (low 20s C) during the day. It rains most days.

What to wear/what to pack:

October

October in Iwamizawa is chilly and extremely rainy. The average overnight temperatures in the area are in the low 40s F (single digits C).

It tends to rain most days. But the colder weather doesn't bring low humidity, which is in the 60% to 70% range on average.

What to wear/what to pack:

November

November in Iwamizawa is cold, somewhat snowy and very rainy. The average overnight temperatures in the area are in the low 30s F (single digits C). It tends to rain about half of the time.

It also snows about half of the time. But the colder weather doesn't bring low humidity, which is in the 60% to 70% range on average.

What to wear/what to pack:

December

December in Iwamizawa is freezing and extremely snowy. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain about a third of the time.

It also snows nearly every day this month. But the colder weather doesn't bring low humidity, which is in the 60% to 70% range on average.

What to wear/what to pack:

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