The most common regret from Japan trips is not "I forgot something." It is "I packed too much." Heavy luggage makes every train transfer painful, every staircase an obstacle, and every hotel check-in an exercise in spatial reasoning. Japan's infrastructure makes light packing easy: coin laundromats in every neighborhood, convenience stores with full toiletry sections, and Uniqlo on seemingly every block.
What to actually bring
Shoes (the most important item)
Comfortable walking shoes that slip on and off easily. You remove shoes at temples, ryokan, some restaurants, fitting rooms, and many traditional attractions. Lace-up boots are a constant hassle. Slip-on sneakers or shoes with easy-pull backs work best. Break them in before the trip. You will walk more in Japan than you expect.
Clothes
Five to seven days of clothes regardless of trip length. Layers work better than bulky items because temperatures vary between outdoor walking, air-conditioned trains, and heated indoor spaces. A light rain jacket that packs small is essential (it will rain at some point). Skip the umbrella; buy a clear convenience store umbrella (around ¥500) when you need one and leave it at your hotel when you leave.
Stick deodorant
This is the one toiletry everyone says to bring. Japanese drugstores mainly stock spray and roll-on deodorant. Stick deodorant is genuinely hard to find. If you use stick deodorant, pack your own. Everything else (shampoo, toothbrush, razor, sunscreen) is widely available and often better quality than what you would bring from home.
A small day bag
A backpack or crossbody bag for daily use. It needs to fit a water bottle, portable battery, wallet, and whatever you buy during the day. Nothing huge. Many Japanese restaurants and trains have limited space, and a massive daypack makes you the person everyone is trying to avoid.
Portable battery
You will use your phone constantly: Google Maps, Google Translate, train schedules, IC card, camera. A portable battery is not optional. Bring one that charges your phone at least twice. Japan does have charging spots in some convenience stores and train stations, but carrying your own is far more reliable.
Medicine
Bring any prescription medication you need, plus your preferred over-the-counter pain relief. Japanese pharmacies sell effective medicine, but the dosages, active ingredients, and labeling are different. If you know what works for you, bring it. Allergy medicine is particularly worth packing if you are visiting during spring (cedar pollen season is intense).
A small quick-dry towel
Many public restrooms in Japan do not have hand dryers or paper towels. Locals carry a small hand towel (tenugui). You will want one too. These are also sold everywhere in Japan, so buying one there is fine.
What to leave at home
Too many clothes. This is the number one mistake. Pack for a week, do laundry.
Toiletries in large bottles. Japanese convenience stores and drugstores sell everything in travel sizes. The quality of Japanese skincare and grooming products is excellent.
Guidebooks. Your phone does everything a guidebook does, in real time, with current information.
Formal clothes. Japan is casual. Even nicer restaurants rarely require more than smart casual. Unless you have a specific formal event planned, leave the dress shoes and blazer at home.
A full-size umbrella. Buy one in Japan when it rains. The clear vinyl umbrellas are ¥500 at any convenience store and you can abandon them guilt-free. Hotels often have a communal umbrella stand where you can borrow one.
Seasonal adjustments
| Season | Add | Notes |
|---|---|---|
| Spring (Mar–May) | Light jacket, allergy medicine | Cedar pollen peaks mid-March to mid-April. Can be severe. |
| Summer (Jun–Aug) | Cooling towels, extra socks | Hot and humid. Menthol body wipes from convenience stores are essential. |
| Autumn (Sep–Nov) | Light layers | Temperature swings between warm days and cool evenings. |
| Winter (Dec–Feb) | Warm coat, heat packs | Kairo (disposable heat packs) sold everywhere but a coat from home is better quality. |
The luggage question
One carry-on size bag (under 160cm total dimensions) is ideal. It fits in train overhead racks, does not require a baggage reservation on the shinkansen, and forces you to pack light. If you need a larger bag, Japan's luggage forwarding service (takkyubin) lets you ship your suitcase between hotels for around ¥2,000–3,000 per bag. You travel with just your day bag while your luggage arrives at your next hotel.
Shinkansen baggage rules: bags over 160cm in total dimensions (length + width + height) require a free oversized baggage reservation on Tokaido/Sanyo/Kyushu/Nishi Kyushu Shinkansen. Reserve online or at the station. Without a reservation, there is a ¥1,000 surcharge.