Onjuku, Japan: What to pack, what to wear, and when to go [2022]
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Traveling to Onjuku, Japan? If you're planning to go to Onjuku, we've got some important information about when to go, what to wear, and what to pack.
Contents
- When to go to Onjuku
- Important essentials for Onjuku
- Activities for Onjuku
- Onjuku in January: weather and what to pack
- Onjuku in February: weather and what to pack
- Onjuku in March: weather and what to pack
- Onjuku in April: weather and what to pack
- Onjuku in May: weather and what to pack
- Onjuku in June: weather and what to pack
- Onjuku in July: weather and what to pack
- Onjuku in August: weather and what to pack
- Onjuku in September: weather and what to pack
- Onjuku in October: weather and what to pack
- Onjuku in November: weather and what to pack
- Onjuku 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 Onjuku, Japan
Based on the climate and weather in Onjuku, the best time to go is July. See below for details.
Important essentials for Onjuku, Japan
Here are some general tips on what to wear in Onjuku, as well as several items to remember to pack when traveling there.
IMPORTANT COVID-19 ESSENTIALS
Touchless thermometer
A touchless thermometer is important to have.
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).
Hand sanitizer
This hand sanitizer is a good plane-friendly choice.
A vaccine card protector
Vaccine cards may become worn. An unreadable vaccine card can cause severe consequences. This vaccine card protector helps avoid that.
-
Proof of COVID-19 vaccination/negative test
Travel disinfecting wipes
Use these to sanitize plane and hotel surfaces.
N95 masks
These N95 masks provide the best level of COVID protection possible.
Other health necessities
Emergency water purifier
Some areas may have potentially unsafe tap water, so it's important to bring an emergency water purifier like this one.
Travel first aid kit
This one is a superb value.
Emergency rapid COVID-19 test
U.S. residents can get them free here. Otherwise, you can buy them here.
Emergency motion sickness relief
Don't forget these
For families with young children
Airplane or car necessities
Voice and data SIM card
A SIM card that works in Onjuku. 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.
Plug adapter
A plug adapter that supports outlet types A and B. This one works in most countries, but you should check with your hotel.
Photography accessories
- cell phone photography gimbal
- camera drone for outdoor shots
- extra batteries
- extra memory cards
Power bank for devices
A portable power bank, like this one
Money/passport pouch
A money pouch is vital for protecting your passport and credit cards.
Activities for Onjuku, Japan
Here are some activity recommendations and activity-specific packing tips for Onjuku.
What to wear/what to pack for Onjuku, Japan by month
Already know when you're traveling?
January
If you vacation in Onjuku during January, you are likely to find that it is pretty cool, somewhat rainy and very hazy. Temperatures tend to hover around the low 50s F (single digits C) during the day, while at night they can dip into the 30s F (single digits C). Humidity is generally between 40 and 50% during the day. In terms of precipitation, you can expect it to rain about half of the time and snow once in a while.
What to wear/what to pack:
-
Jacket or coat
Lip balm
In our opinion, the best choice: here
Fleece
Light gloves or mittens
Extra socks
-
Warm pants or jeans
-
Standard footwear
Waterproof snow boots
In addition to regular footwear, it's important to bring snow boots. For visiting Onjuku, we suggest these boots:
Waterproof jacket that can be used in snow
A wind resistant umbrella
This is essential here. This one is a great choice.
February
If you visit Onjuku during February, you may notice that it can be brisk, somewhat rainy and somewhat hazy. Temperatures tend to hover around the low 50s F (single digits C) during the day, while at night they can dip into the 30s F (single digits C). Humidity is generally between 40 and 50% during the day. In terms of precipitation, you can expect it to rain about half of the time and snow sometimes.
What to wear/what to pack:
Light gloves or mittens
Extra socks
Fleece
-
Warm pants or jeans
Lip balm
In our opinion, the best is: here
-
Jacket or coat
-
Standard footwear
A rain jacket to layer with a coat
100% waterproof footwear
We recommend these rain boots:
Rain pants
These pants are essential in a storm.
Waterproof phone bag
Umbrella
This one is a perfect choice.
Waterproof bag/luggage cover
So your suitcases remain dry. We like:
March
If you vacation in Onjuku during March, you may see that it is pretty cool, very rainy and somewhat hazy. Temperatures tend to hover around the 50s F (low 10s C) during the day, while at night they can dip into the high 30s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain most days.
What to wear/what to pack:
-
Jacket or coat
-
Warm pants or jeans
Light gloves or mittens
Lip balm
In our opinion, the best is: this
Extra socks
Fleece
-
Standard footwear
A rain coat to layer with a coat
100% waterproof footwear
We use rain boots:
Rain pants
These will be essential in heavy rain.
Waterproof phone bag
Windproof umbrella
This one is a perfect choice.
Waterproof bag/luggage cover
So your things stay dry. We like:
April
April in Onjuku is crisp, very rainy and somewhat hazy. The average overnight temperatures in the area are in the high 40s F (single digits C). It tends to rain 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:
Pants or jeans
Extra socks
Light and heavy skirts
-
Dresses
-
Long sleeve shirts or blouses
Light jacket or fleece
-
Standard footwear
A rain jacket to layer with a coat
100% waterproof footwear
We suggest rain boots:
Rain pants
These pants will be vital in heavy rain.
Waterproof phone bag
Umbrella
This one is a perfect choice.
Waterproof bag/luggage cover
So your things don't get wet. We suggest:
May
May in Onjuku is mild, very rainy and somewhat hazy. Temperatures average in the high 60s F (low 20s C) during the day. It rains about half of the time.
What to wear/what to pack:
Pants or jeans
Light and heavy skirts
-
Standard footwear
Light jacket or fleece
-
Dresses
-
Long sleeve shirts or blouses
Extra socks
A rain jacket to layer with a jacket
100% waterproof footwear
We recommend these rain boots:
Rain pants
These can be vital in heavy rain.
Waterproof phone bag
Umbrella
This one is a perfect choice.
Waterproof bag/luggage cover
So your things don't get wet. We recommend:
June
June in this region is warm, very rainy and somewhat hazy. Temperatures average in the low 70s F (low 20s C) during the day. It rains about two thirds of the time.
What to wear/what to pack:
Breathable footwear or sandals
Light skirts
Extra socks
-
Long and short sleeve shirts
Sandals
Short pants or heavy shorts
Light dresses
You can find some great options here
Bug repellent
Sunscreen lotion
Beach necessities
If you're going to the beach:
A rain coat to layer with a jacket
100% waterproof footwear
We like these rain boots:
Rain pants
Rain pants will be a lifesaver in a rainstorm.
Waterproof phone bag
Wind resistant umbrella
This one is a great one to buy.
Waterproof bag/luggage cover
So your bags stay dry. We recommend:
July
If you vacation in Onjuku during July, you might see that it is a perfect temperature, very rainy and somewhat hazy. Temperatures tend to hover around the high 70s F (mid 20s C) during the day, while at night they can dip into the low 60s F (low 20s C). Humidity is generally around 70 during the day. In terms of precipitation, you can expect it to rain about half of the time.
What to wear/what to pack:
Extra socks
Sunscreen lotion
Light skirts
-
Long and short sleeve shirts
Short pants or heavy shorts
Breathable footwear or sandals
Light dresses
You can find some great options here
Sandals
Bug repellent
Beach necessities
If you're going to the beach:
A rain coat to layer with a jacket
100% waterproof footwear
We use these rain boots:
Rain pants
These will be essential in a storm.
Waterproof phone bag
Wind resistant umbrella
This one is a perfect option.
Waterproof bag/luggage cover
So your things stay dry. We recommend:
August
If you are traveling to Onjuku in August, you will notice that it is extremely warm, very rainy and somewhat hazy. Expect it to rain about two thirds of the time. Daytime temperatures are in the low 80s F (high 20s C).
What to wear/what to pack:
Loose-fit shorts
Bug repellent
Cool and dry dresses
These dresses can provide UV protection and cool you.
Insulated water bottle
Our favorite:
Breatheable shirts
A cooling shirt can make you comfortable and protect you from the sun:
Waterproof sandals
Sunglasses
Sunscreen lotion, moderate SPF
Skirts
If you're going to the beach
A rain jacket to layer with another jacket
100% waterproof footwear
We suggest these rain boots:
Rain pants
These pants will be a lifesaver in a storm.
Waterproof phone bag
Umbrella
This one is an excellent choice.
Waterproof bag/luggage cover
So your belongings remain dry. We like:
September
September in Onjuku is warm, very rainy and somewhat hazy. The rain can amount to several inches/centimeters. During this time, temperatures average in the low 70s F (low 20s C) to high 70s F (mid 20s C).
What to wear/what to pack:
Extra socks
Light dresses
You can find some great options here
Sandals
Sunscreen lotion
-
Long and short sleeve shirts
Breathable footwear or sandals
Light skirts
Bug repellent
Short pants or heavy shorts
Beach necessities
If you're going to the beach:
A rain jacket to layer with a coat
100% waterproof footwear
We suggest rain boots:
Rain pants
Rain pants can be a lifesaver in a rainstorm.
Waterproof phone bag
Windproof umbrella
This one is an excellent one to buy.
Waterproof bag/luggage cover
So your suitcases remain dry. We suggest:
October
Traveling to Onjuku in October, you will notice that it is mild, very rainy and very hazy. Expect it to rain about half of the time. Daytime temperatures are in the low 60s F (low 20s C).
What to wear/what to pack:
Extra socks
-
Standard footwear
-
Long sleeve shirts or blouses
-
Dresses
Light and heavy skirts
Pants or jeans
Light jacket or fleece
A rain jacket to layer with a coat
100% waterproof footwear
We recommend these rain boots:
Rain pants
Rain pants can be essential in heavy rain.
Waterproof phone bag
Umbrella
This one is a great one to buy.
Waterproof bag/luggage cover
So your bags remain dry. We like:
November
If you visit Onjuku during November, you will probably find that it is crisp, somewhat rainy and very hazy. Temperatures tend to hover around the low 60s F (high 10s C) during the day, while at night they can dip into the high 40s F (single digits C). Humidity is generally between 50 and 60% during the day. In terms of precipitation, you can expect it to rain about half of the time.
What to wear/what to pack:
-
Standard footwear
Extra socks
-
Long sleeve shirts or blouses
-
Dresses
Light jacket or fleece
Light and heavy skirts
Pants or jeans
A rain jacket to layer with another jacket
100% waterproof footwear
We use rain boots:
Rain pants
These pants can be a lifesaver in heavy rain.
Waterproof phone bag
Windproof umbrella
This one is a perfect option.
Waterproof bag/luggage cover
So your belongings remain dry. We suggest:
December
In December, Onjuku is chilly, somewhat rainy and extremely hazy. Temperatures routinely are in the 50s F (low 10s C) range. At night, lows are in the high 30s F (single digits C). This is also a rainy time for Onjuku, with several of the days of the month having rain. In December, humidity reaches as high as 50%.
What to wear/what to pack:
Fleece
Extra socks
Light gloves or mittens
Lip balm
In our opinion, the best pick: this
-
Warm pants or jeans
-
Jacket or coat
-
Standard footwear
A rain jacket to layer with another jacket
100% waterproof footwear
We recommend these rain boots:
Rain pants
These pants will be vital in heavy rain.
Waterproof phone bag
Umbrella
This one is an excellent one to buy.
Waterproof bag/luggage cover
So your suitcases stay dry. We recommend:
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