Iwamizawa, Japan: What to pack, what to wear, and when to go [2018]

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:

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.

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

January

If you are traveling to Iwamizawa in January, you will notice that it is frosty and extremely snowy. Expect it to snow almost every day of the month. Daytime temperatures are in the high 20s F (single digits below 0 C).

What to wear/what to pack:

  • Waterproof coat
  • Gloves
  • Thermal undergarments
  • Scarf
  • Fleeces
  • Sweaters
  • Umbrella
  • Pajamas, such as sweats
  • Insulated boots
  • Waterproof boots
  • Multiple layer jacket shell
  • Very heavy socks

February

February 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 below 0 C), although night temperatures can dip into the single digits F (10+ below zero C).

What to wear/what to pack:

  • Fleeces
  • Insulated boots
  • Scarf
  • Sweaters
  • Thermal undergarments
  • Waterproof coat
  • Umbrella
  • Very heavy socks
  • Multiple layer jacket shell
  • Gloves
  • Waterproof boots
  • Pajamas, such as sweats

March

March in Iwamizawa is frigid and extremely snowy. The rain/snow can amount to several inches/centimeters.

During this time, temperatures average in the low 30s F (single digits below 0 C) to 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:

  • Cold weather footwear
  • Umbrella
  • Warm pants or jeans
  • Heavy jacket
  • Sweaters
  • Gloves or mittens
  • Heavy socks
  • Waterproof coat
  • Waterproof boots

April

In April, Iwamizawa is cold and very rainy. Temperatures routinely are in the low 50s 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 April, humidity reaches as high as 70%. Additionally, it is breezy.

What to wear/what to pack:

  • Umbrella
  • Fleeces
  • Warm pants or jeans
  • Waterproof coat
  • Jacket or coat
  • Light gloves or mittens
  • Socks
  • Standard footwear
  • Waterproof boots

May

In May, Iwamizawa is relatively cool and extremely rainy. Temperatures routinely are in the low 60s F (high 10s C) and a bit less than half of the time jump into the 60s F (high 10s C) range. At night, lows are in the low 40s F (single digits C).

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

What to wear/what to pack:

  • Long skirts
  • Rain coat
  • Standard footwear
  • Light jacket or fleece
  • Waterproof footwear
  • Pants or jeans
  • Socks
  • Waterproof luggage
  • Dresses
  • Umbrella
  • Long sleeve shirts or blouses

June

June in Iwamizawa is mild and very rainy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 60s F (mid 10s C) to low 60s F (low 20s C).

What to wear/what to pack:

  • Standard footwear
  • Long sleeve shirts or blouses
  • Long skirts
  • Pants or jeans
  • Socks
  • Umbrella
  • Light jacket or fleece
  • Dresses
  • Waterproof footwear
  • Waterproof luggage
  • Rain coat

July

July in Iwamizawa is warm 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:

  • Rain coat
  • Long and short sleeve shirts
  • Dresses
  • Shorts or short pants
  • Sunscreen lotion
  • Waterproof footwear
  • Waterproof luggage
  • Sandals
  • Skirts
  • Umbrella
  • Light footwear

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 low 60s F (low 20s C) to high 70s F (mid 20s C).

What to wear/what to pack:

  • Umbrella
  • Shorts or short pants
  • Skirts
  • Waterproof luggage
  • Sunscreen lotion
  • Rain coat
  • Dresses
  • Sandals
  • Long and short sleeve shirts
  • Light footwear
  • Waterproof footwear

September

If you visit Iwamizawa during September, you are likely to find that it is mild and extremely 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 60 and 70% during the day. In terms of precipitation, you can expect it to rain most days.

What to wear/what to pack:

  • Long sleeve shirts or blouses
  • Waterproof luggage
  • Umbrella
  • Socks
  • Rain coat
  • Standard footwear
  • Pants or jeans
  • Waterproof footwear
  • Dresses
  • Long skirts
  • Light jacket or fleece

October

If you visit Iwamizawa during October, you are likely to find that it is relatively cool and extremely 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 most days.

What to wear/what to pack:

  • Socks
  • Long skirts
  • Long sleeve shirts or blouses
  • Dresses
  • Rain coat
  • Umbrella
  • Light jacket or fleece
  • Waterproof footwear
  • Standard footwear
  • Pants or jeans
  • Waterproof luggage

November

In November, Iwamizawa can be very chilly, 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:

  • Warm pants or jeans
  • Standard footwear
  • Socks
  • Waterproof coat
  • Fleeces
  • Waterproof boots
  • Light gloves or mittens
  • Umbrella
  • Jacket or coat

December

In December, Iwamizawa is very cold and extremely snowy. Temperatures routinely are in the low 30s F (single digits C) range. At night, lows are in the low 20s 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 December, humidity reaches as high as 70%.

What to wear/what to pack:

  • Gloves or mittens
  • Heavy jacket
  • Waterproof coat
  • Umbrella
  • Cold weather footwear
  • Warm pants or jeans
  • Waterproof boots
  • Sweaters
  • Heavy socks

Year-round what to wear/what to pack 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.

  • A plug adadpter that supports outlet types A and B
  • A SIM card that works in Iwamizawa

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