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

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

When to go to Karuizawa, Japan

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

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

January

Traveling to Karuizawa in January, you will notice that it can be extremely cold. Expect it to rain once in a while. Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

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

February

If you go to Karuizawa in February, you will notice that it is frigid. Expect it to rain occasionally. Daytime temperatures are in the 30s F (single digits C).

What to wear/what to pack:

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

March

If you go to Karuizawa in March, you will notice that it is brisk. Expect it to rain sometimes. Daytime temperatures are in the low 40s F (single digits C).

What to wear/what to pack:

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

April

April in Karuizawa is crisp. The rain can amount to several inches/centimeters.

During this time, temperatures average in the low 40s F (single digits C) to 50s F (low 10s C), although night temperatures can dip into the low 30s F (single digits C).

What to wear/what to pack:

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

May

May is chilly. Temperatures average in the 60s F (high 10s C) during the day. It rains occasionally.

What to wear/what to pack:

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

June

Traveling to Karuizawa in June, you will notice that it is balmy. Expect it to rain sometimes. Daytime temperatures are in the high 60s F (low 20s C).

What to wear/what to pack:

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

July

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

What to wear/what to pack:

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

August

August here is a perfect temperature. Temperatures average in the high 70s F (mid 20s C) during the day. It rains sometimes.

What to wear/what to pack:

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

September

If you vacation in Karuizawa during September, you are likely to find that it is mild. Temperatures tend to hover around the high 60s F (low 20s C) during the day, while at night they can dip into the 50s F (low 10s C).

In terms of precipitation, you can expect it to rain a bit less than half of the time.

What to wear/what to pack:

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

October

If you vacation in Karuizawa during October, you are likely to find that it can be chilly. 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).

In terms of precipitation, you can expect it to rain occasionally.

What to wear/what to pack:

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

November

November in Karuizawa can be very chilly. The average overnight temperatures in the area are in the low 30s F (single digits below 0 C).

What to wear/what to pack:

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

December

December in Karuizawa is cold. The average overnight temperatures in the area are in the low 20s F (single digits below 0 C). It tends to rain occasionally.

What to wear/what to pack:

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

Year-round what to wear/what to pack for Karuizawa, Japan

Here are some general tips on what to wear in Karuizawa, 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 Karuizawa
  • If you plan to visit a church, make sure to bring appropriate clothing

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