Before you go
Most of what makes a Japan trip run smoothly is sorted in the ten minutes before you fly — a few apps installed, a plug adapter packed, and a rough idea of cash versus card.
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PACKING LIST
APPS TO INSTALL BEFORE YOU FLY
Set these up while you still have reliable home WiFi — some need it to activate or download an offline pack.
eSIM or Pocket WiFi — Set up while you still have home WiFi
Offline Google Maps — Download the cities you will visit
Google Translate's Japanese offline pack — Needs a connection to download once, then works offline
WHAT TO WEAR, SEASON BY SEASON
| Season | Months | Weather | What to pack |
|---|---|---|---|
| Summer | Jun–Sep | Hot and humid | Light, breathable clothing, a portable fan or cooling towel |
| Winter | Dec–Feb | Cold in most of Honshu & Hokkaido, mild in Kyushu & Okinawa | Layers rather than one heavy coat for the whole trip |
| Spring | — | Mild — cherry blossom season | Light layers; book accommodation early |
| Autumn | — | Mild — foliage season | Light layers; book accommodation early |
Each city guide shows current conditions for that destination.
CASH, CARD & TAX-FREE
Carry both cash and card — see the Payment guide for foreign-card-friendly ATMs, IC cards, and how tax-free shopping works for short-term visitors.