Iwamizawa, Japan: What to pack, what to wear, and when to go [2022]
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Traveling to Iwamizawa, Japan? If you're planning to go to Iwamizawa, I have some important information about when to go, what to wear, and what to pack.
Contents
- When to go to Iwamizawa
- Important essentials for Iwamizawa
- Activities for Iwamizawa
- Iwamizawa in January: weather and what to pack
- Iwamizawa in February: weather and what to pack
- Iwamizawa in March: weather and what to pack
- Iwamizawa in April: weather and what to pack
- Iwamizawa in May: weather and what to pack
- Iwamizawa in June: weather and what to pack
- Iwamizawa in July: weather and what to pack
- Iwamizawa in August: weather and what to pack
- Iwamizawa in September: weather and what to pack
- Iwamizawa in October: weather and what to pack
- Iwamizawa in November: weather and what to pack
- Iwamizawa in December: weather and what to pack

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 Iwamizawa, Japan
Based on the climate and weather in Iwamizawa, the best time to go is July. See below for details.
Important essentials 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.
COVID-19 ESSENTIALS FOR 2022
Travel insurance
If you or a companion get COVID-19, your amazing trip can be ruined. Good travel insurance can help. See plans
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Travel disinfecting wipes
Use these to sanitize plane and hotel surfaces.
-
Hand sanitizer
This hand sanitizer is a good TSA-friendly option.
-
A vaccine card protector
Vaccine cards may become worn. An unreadable vaccine card can cause severe consequences. This vaccine card protector helps stop that.
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N95 masks to use in crowded airports
These N95 masks provide the best level of COVID protection possible.
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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
Virus/bacteria filtering water bottle
Some areas may have unreliable tap water, so it's wise to take a contaminant filtering water bottle.
-
Travel first aid kit
This one is a great option.
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Emergency motion sickness relief
Don't forget these
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Money/passport pouch
A money pouch is vital for protecting your passport and credit cards.
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Airplane or car necessities
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For families with young children
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Voice and data SIM card
A SIM card that works in Iwamizawa. A good global SIM card works in most countries, but check the country list before buying. In some more rural areas you may need a satellite phone. We recommend this satellite phone.
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Plug adapter
A plug adapter that supports outlet types A and B. This one works in most areas, but you should check with your hotel.
-
Power bank for devices
A portable power bank, like this one
What to wear/what to pack for Iwamizawa, Japan by month
Already know when you're traveling?
January
In January, Iwamizawa is very cold and extremely snowy. Temperatures routinely are in the high 20s 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 January, humidity reaches as high as 80%.
What to wear/what to pack:
-
Extreme weather jacket shell
These are a great value:
-
Very heavy heated socks
Like these
-
Insulated ice boots
We use:
-
Extreme cold weather gloves
-
Coveralls/snow pants
Here are some of our favorites:
-
Fleece inner layer
-
Scarf/neck warmer
-
Heavy sweaters
-
Lip balm
The best option: this
-
Thermal undergarments
We chose:
-
Pajamas
-
Waterproof snow boots
In addition to day-to-day shoes, it's important to bring snow boots. For visiting Iwamizawa, a great option is these boots:
-
Waterproof jacket that can be used in snow
-
A umbrella
This is vital here. This one is an excellent choice.
February
February in Iwamizawa is very cold and extremely snowy. The average overnight temperatures in the area are in the 10s F (single digits below 0 C), with a few days below 5 F (10+ below zero C). It snows 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:
-
Very heavy heated socks
Like these
-
Fleece inner layer
-
Pajamas
-
Extreme weather jacket shell
These are a great value:
-
Insulated ice boots
We use:
-
Heavy sweaters
-
Thermal undergarments
We like:
-
Extreme cold weather gloves
-
Scarf/neck warmer
-
Lip balm
The best pick: this
-
Coveralls/snow pants
Here are some of our favorites:
-
Waterproof snow boots
In addition to regular shoes, you should bring snow boots. For traveling to Iwamizawa, we suggest these boots:
-
Waterproof jacket that can be used in snow
-
A wind resistant umbrella
This is essential here. This one is a perfect option.
March
If you go to Iwamizawa in March, you will notice that it is freezing and extremely snowy. Expect it to rain about a third of the time and snow nearly every day this month. Daytime temperatures are in the 30s F (single digits C).
What to wear/what to pack:
-
Sweaters
-
Insulated water bottle
Our choice:
-
Heavy jacket
-
Warm pants or jeans
-
Heavy socks
Such as:
-
Gloves
-
Lip balm
Our favorite option: this one
-
Cold weather footwear
-
Waterproof snow boots
In addition to day-to-day footwear, it's important to bring snow boots. For traveling to Iwamizawa, we suggest these boots:
-
Waterproof jacket that can be used in snow
-
A windproof umbrella
This is important here. This one is a perfect option.
April
If you visit Iwamizawa during April, you will probably notice that it is brisk and very rainy. Temperatures tend to hover around the low 50s F (single digits C) during the day, while at night they can dip into the low 30s 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 two thirds of the time and snow 5-10 days this month.
What to wear/what to pack:
-
Fleece
-
Light gloves or mittens
-
Lip balm
In our opinion, the best choice: here
-
Warm pants or jeans
-
Jacket or coat
-
Extra socks
-
Standard footwear
-
Waterproof snow boots
In addition to day-to-day footwear, it's important to bring snow boots. For visiting Iwamizawa, a great option is these boots:
-
Waterproof jacket that can be used in snow
-
A umbrella
This is vital here. This one is an excellent option.
May
May in Iwamizawa is relatively cool 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:
-
Light and heavy skirts
-
Pants or jeans
-
Dresses
-
Standard footwear
-
Extra socks
-
Long sleeve shirts or blouses
-
Light jacket or fleece
-
A rain poncho to layer with another jacket
-
100% waterproof footwear
We suggest rain boots:
-
Rain pants
Rain pants will be essential in a storm.
-
Waterproof phone bag
-
Umbrella
This one is an excellent option.
-
Waterproof bag/luggage cover
So your things stay dry. We like:
June
If you visit Iwamizawa during June, you are likely to find that it is mild and very rainy. 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). Humidity is generally between 70 and 80% during the day. In terms of precipitation, you can expect it to rain most days.
What to wear/what to pack:
-
Light and heavy skirts
-
Pants or jeans
-
Extra socks
-
Standard footwear
-
Dresses
-
Light jacket or fleece
-
Long sleeve shirts or blouses
-
A rain jacket to layer with another jacket
-
100% waterproof footwear
We suggest rain boots:
-
Rain pants
These pants will be essential in heavy rain.
-
Waterproof phone bag
-
Windproof umbrella
This one is a great choice.
-
Waterproof bag/luggage cover
So your things don't get wet. We suggest:
July
July in Iwamizawa is a perfect temperature and very rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 60s F (low 20s C) to 70s F (mid 20s C).
What to wear/what to pack:
-
Breathable footwear or sandals
-
Light skirts
-
Long and short sleeve shirts
-
Short pants or heavy shorts
-
Light dresses
You can find some great options here
-
Extra socks
-
Sunscreen lotion
-
Sandals
-
Bug repellent
-
A rain coat to layer with a jacket
-
100% waterproof footwear
We recommend rain boots:
-
Rain pants
These pants will be vital in a storm.
-
Waterproof phone bag
-
Wind resistant umbrella
This one is a perfect option.
-
Waterproof bag/luggage cover
So your suitcases remain dry. We recommend:
August
August in Iwamizawa is a perfect temperature and very rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 70s F (mid 20s C).
What to wear/what to pack:
-
Extra socks
-
Light skirts
-
Long and short sleeve shirts
-
Short pants or heavy shorts
-
Breathable footwear or sandals
-
Bug repellent
-
Light dresses
You can find some great options here
-
Sunscreen lotion
-
Sandals
-
A rain coat to layer with another jacket
-
100% waterproof footwear
We recommend rain boots:
-
Rain pants
These pants will be a lifesaver in a storm.
-
Waterproof phone bag
-
Windproof umbrella
This one is a great one to buy.
-
Waterproof bag/luggage cover
So your bags stay dry. We suggest:
September
September in Iwamizawa is balmy and extremely rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 60s F (low 20s C).
What to wear/what to pack:
-
Extra socks
-
Long sleeve shirts or blouses
-
Dresses
-
Standard footwear
-
Pants or jeans
-
Light and heavy skirts
-
Light jacket or fleece
-
A rain jacket to layer with a coat
-
100% waterproof footwear
We recommend these rain boots:
-
Rain pants
These pants can be vital in a rainstorm.
-
Waterproof phone bag
-
Windproof umbrella
This one is an excellent one to buy.
-
Waterproof bag/luggage cover
So your bags stay dry. We suggest:
October
October in Iwamizawa is chilly and extremely rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 50s F (single digits C) to high 50s F (mid 10s C), although night temperatures can dip into the low 30s F (single digits C).
What to wear/what to pack:
-
Dresses
-
Standard footwear
-
Long sleeve shirts or blouses
-
Light and heavy skirts
-
Light jacket or fleece
-
Pants or jeans
-
Extra socks
-
A rain poncho to layer with a coat
-
100% waterproof footwear
We recommend rain boots:
-
Rain pants
These pants will be essential in a rainstorm.
-
Waterproof phone bag
-
Umbrella
This one is a great option.
-
Waterproof bag/luggage cover
So your bags stay dry. We like:
November
In November, Iwamizawa is cold, somewhat snowy and very rainy. Temperatures routinely are in the 40s F (single digits C) range. At night, lows are in the low 30s F (single digits C). This is also a rainy time for Iwamizawa, with more than half of the days of the month having rain. In November, humidity reaches as high as 70%.
What to wear/what to pack:
-
Jacket or coat
-
Extra socks
-
Warm pants or jeans
-
Light gloves or mittens
-
Fleece
-
Lip balm
In our opinion, the best pick: this one
-
Standard footwear
-
Waterproof snow boots
In addition to standard footwear, you should bring snow boots. For traveling to Iwamizawa, a great option is these boots:
-
Waterproof jacket that can be used in snow
-
A umbrella
This is essential here. This one is an excellent choice.
December
December in Iwamizawa is very cold and extremely snowy. The rain/snow can amount to several inches/centimeters. During this time, temperatures average in the low 30s F (single digits C), although night temperatures can dip into the single digits F (10+ below zero C).
What to wear/what to pack:
-
Sweaters
-
Lip balm
Our pick: this one
-
Heavy socks
Such as:
-
Heavy jacket
-
Warm pants or jeans
-
Insulated water bottle
Our first choice:
-
Gloves
-
Cold weather footwear
-
Waterproof snow boots
In addition to day-to-day footwear, you should bring snow boots. For traveling to Iwamizawa, we suggest these boots:
-
Waterproof jacket that can be used in snow
-
A wind resistant umbrella
This is essential here. This one is a perfect choice.
Activities for Iwamizawa, Japan
Here are some activity recommendations and activity-specific packing tips for Iwamizawa.
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