?Bring a water bottle, too ? the air is dry and with the heating inside, you'll shrivel up and need to keep hydrated,? he adds. If you forget anything or get caught short, Japan's conbini (convenience stores) sell the winter basics.

Yes, bringing a reusable water bottle to Japan in 2026 is highly recommended for both environmental and economic reasons. Japanese tap water is world-class, meeting safety standards that often exceed those of the WHO and the United States. It is safe to drink directly from the tap in almost every city and rural area. By carrying your own bottle, you can take advantage of the growing number of free water refill stations in major hubs like Tokyo and Osaka, as well as the generous "free water" policy at nearly all restaurants. While Japan’s legendary vending machines are convenient and found on almost every street corner, the cumulative cost of purchasing bottled water adds up, and the environmental impact of single-use plastics remains a concern. A reusable bottle allows you to stay hydrated during long days of sightseeing, especially during the notoriously humid summer months, without constantly searching for a trash bin—which can be surprisingly difficult to find in public spaces in Japan.