Monitor local weather updates (JMA) for Apr 1–2 heavy rain and regional warnings expect travel delays and adjust plans accordingly.
Avoid non-essential travel to coastal and mountain areas during issued JMA warnings (high waves, landslide/avalanche risk) postpone outdoor plans if possible.
Download the TOKYO Disaster Action Guide & Map and register with the Tokyo 'KitaconDX' multilingual system before travel or immediately on arrival.
Allow extra transit time, pack waterproof clothing and a small emergency kit (phone power bank, charged phone, portable umbrella), and plan indoor alternatives for activities on Apr 1–2.
Stay informed about public gatherings — be prepared to avoid central protest locations and follow local authority instructions.
