Koshu, Japan: What to pack, what to wear, and when to go [2023]

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

Contents

When to go to Koshu, Japan

Based on the climate and weather in Koshu, Japan, the best time to go is June. See below for details.

What to wear/what to pack for Koshu, Japan

Already know when you're traveling?

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

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

January

January in Koshu can be very chilly. The rain/snow can amount to several inches/centimeters. During this time, temperatures average in the 30s F (single digits C) to 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your things.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be careful to get the correct kind. The vast majority of adapters available are just plug changers and expect your electronics to change the voltage themselves. If yours can't do that they could get destroyed. This one should be appropriate for most places.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    An excellent option is this one

  • Easy folding travel stroller

    This stroller weighs almost 10 pounds and folds to the size of a big book.

February

February in Koshu is pretty cool. The rain/snow can amount to several inches/centimeters. During this time, temperatures average in the high 30s F (single digits C) to high 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Check that you pick the necessary kind. The vast majority of adapters available online are just plug changers and expect your electronics to convert the voltage themselves. If yours can't do that they could burn up. This one should work in most places.

  • Travel pillow

    A top rated pillow is this one

  • Easy folding travel stroller

    This stroller weighs almost 10 lbs and folds to the size of a big book.

March

March is chilly. Temperatures average in the 50s F (low 10s C) during the day.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your stuff.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Power bank for devices

    A portable power bank, like this one

  • Easy folding travel stroller

    This stroller weighs only 10 lbs and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    A good option is this one

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Take care to find the necessary type. Most adapters currently being sold are just plug changers and expect your electronics to convert the voltage themselves. If yours can't do that they could get fried. This one should be appropriate for most countries.

April

April in Koshu is balmy. The average overnight temperatures in the area are in the low 40s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

Comfort + Essentials
  • Travel neck support pillow

    A good option is this one

  • Ultralightweight travel stroller

    This stroller weighs almost 10 lbs and folds to the size of a big book.

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to choose the correct kind. Many adapters currently being sold are simply plugs and require your devices to convert the voltage themselves. If your electronics can't do that they could burn up. This one should be appropriate for most countries.

May

Traveling to Koshu in May, you will notice that it is warm. Daytime temperatures are in the low 70s F (low 20s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

Comfort + Essentials
  • Travel adapter

    A plug adapter that supports outlet types A and B. Take care to pick the right type. A lot of adapters currently available are simply plugs and require your devices to adjust the voltage themselves. If yours can't do that they could get fried. This one works in most places.

  • Power bank for devices

    A portable power bank, like this one

  • Ultraportable travel stroller

    This stroller weighs just 10 lbs and folds to the size of a big book.

  • Travel pillow

    Our fave is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

June

June in Koshu is warm. 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:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

Comfort + Essentials
  • Folding travel stroller

    This stroller weighs almost 10 lbs and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel pillow

    Our favorite is this one

  • Power bank for devices

    A portable power bank, like this one

  • Voltage step down adapter

    A plug adapter that supports outlet types A and B. Check that you pick the necessary type. The vast majority of adapters currently being sold are just plug changers and expect your devices to adjust the voltage themselves. If yours can't do that they could burn up. This one should work in most areas.

July

July here is extremely hot. Temperatures average in the 80s F (low 30s C) during the day.

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your belongings.

Comfort + Essentials
  • Travel neck support pillow

    A great choice is this one

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Make sure to pick the correct kind. Most adapters on sale are simply plug changers and expect your devices to adjust the voltage themselves. If your devices can't do that they could get destroyed. This one is sufficent for most locations.

  • Power bank for devices

    A portable power bank, like this one

  • Ultraportable travel stroller

    This stroller weighs only 10 pounds and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

August

August in Koshu is really hot. The rain can amount to several inches/centimeters. During this time, temperatures average in the high 70s F (mid 20s C) to high 80s F (low 30s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little peace of mind, an anti-theft backpack protects your things.

Comfort + Essentials
  • Travel pillow

    An excellent option is this one

  • Ultraportable travel stroller

    This stroller weighs almost 10 pounds and folds to the size of a big book.

  • Power bank for devices

    A portable power bank, like this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Check that you pick the correct kind. Many adapters for sale now are simply plugs and require your devices to convert the voltage themselves. If your devices can't do that they could get fried. This one is sufficent for most areas.

September

Traveling to Koshu in September, you will notice that it is pretty consistently hot. Daytime temperatures are in the low 80s F (high 20s C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your stuff.

Comfort + Essentials
  • Travel voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to find the right type. Most adapters currently being sold are just plugs and expect your electronics to change the voltage themselves. If yours can't do that they could get fried. This one works in most places.

  • Ultralightweight travel stroller

    This stroller weighs almost 10 lbs and folds to the size of a big book.

  • Power bank for devices

    A portable power bank, like this one

  • Travel pillow

    Our favorite is this one

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

October

October in Koshu is balmy. 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:

Clothes + Footwear
Health
Safety + Security
  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a bit of peace of mind, an anti-theft backpack protects your stuff.

Comfort + Essentials
  • Power bank for devices

    A portable power bank, like this one

  • Super portable foldable travel stroller

    This stroller weighs only 10 lbs and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Travel neck pillow

    A great choice is this one

  • Voltage adapter

    A plug adapter that supports outlet types A and B. Be sure to get the correct kind. The vast majority of adapters for sale now are just plug changers and expect your devices to change the voltage themselves. If your devices can't do that they could get fried. This one is sufficent for most places.

November

November in Koshu is relatively cool. The average overnight temperatures in the area are in the high 30s F (single digits C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Anti-theft backpack

    For a bit of protection, an anti-theft backpack protects your things.

  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

Comfort + Essentials
  • Super portable foldable travel stroller

    This stroller weighs just 10 lbs and folds to the size of a big book.

  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Plug adapter

    A plug adapter that supports outlet types A and B. Take care to choose the necessary type. A lot of adapters currently sold are just plugs and expect your electronics to adjust the voltage themselves. If yours can't do that they could get destroyed. This one should work in most locations.

  • Travel neck support pillow

    What we like is this one

  • Power bank for devices

    A portable power bank, like this one

December

December in Koshu is cold. The average overnight temperatures in the area are in the low 30s F (single digits below 0 C).

What to wear/what to pack:

Clothes + Footwear
Health
Safety + Security
  • Money/passport pouch

    A money pouch is vital for protecting your passport and credit cards.

  • Anti-theft backpack

    For a little protection, an anti-theft backpack protects your belongings.

  • Voice and data SIM card

    A SIM card that works in Koshu. 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.

Comfort + Essentials
  • Airplane phone mount

    Make your flight more comfortable with an airplane phone mount

  • Power bank for devices

    A portable power bank, like this one

  • Travel neck pillow

    What we like is this one

  • Travel adapter

    A plug adapter that supports outlet types A and B. Be careful to choose the right type. The majority of adapters currently available are just plugs and require your devices to change the voltage themselves. If your devices can't do that they could get fried. This one should be sufficient for most areas.

  • Easy folding travel stroller

    This stroller is only 10 pounds and folds to the size of a big book.

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.

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