Typhoon Season in Tokyo: Choosing Safe Housing

Every year, from late August to October, Tokyo catches the tail of several typhoons. Most amount to a day of driving rain and wind, with no drama. But your choice of housing makes a real difference between an uncomfortable typhoon season and a worry-free one. Here is what a foreigner should check before signing.

Quick answer: To get through Tokyo's typhoon season calmly, avoid ground floors and basements in low areas near rivers, check the ward's hazard map before signing, and favour a recent concrete building. Take out renters insurance: it is cheap and covers water damage. The real risk is local flooding, not the building itself.

Understanding the real risk

Japanese buildings are designed to withstand wind and earthquakes. During a typhoon, the main danger to a resident is not collapse but water: a river overflowing, sewers backing up, or runoff in low areas. The risk therefore depends mostly on location and floor, not on the apparent sturdiness of the unit.

That is good news: you just need to choose where and how high you live.

Floor and building type

• Avoid the ground floor and basement in flood-prone areas. A cheap semi-basement studio can turn out to be a bad bet.
• Favour the 2nd floor and above if you live near a river or in a low area.
• Concrete (RC/SRC) over light wood for noise, insulation and wind resistance.

These criteria add to your usual lease checklist, they do not replace it.

The hazard map

Every Tokyo ward publishes a flood and landslide hazard map. Before signing, find the ward's hazard map and locate the unit's address. Coloured zones show the potential water depth in a major flood.

If a unit sits in a heavily coloured zone and on the ground floor, that is a signal to aim for a higher floor or another place. If you are weighing neighbourhoods, the neighbourhoods guide helps locate safer residential areas.

Beyond flooding: wind and outages

A typhoon is not just rain. Gusts can throw around loose objects and, more rarely, cause brief power outages. A few useful housing points:

• Clear balcony: bring in pots, bikes and light objects before the typhoon arrives.
• Windows: most apartments have no shutters; a shatter film on a large pane is a plus.
• Exposure: a room whose openings face away from the prevailing wind stays calmer.

These details do not show on a listing, but an in-person viewing or a question to the agency lets you check them. They matter most on higher floors, where the wind is felt more.

Renters insurance: essential

Renters insurance is cheap in Japan (often 15,000 to 20,000 JPY for two years) and usually covers water damage and personal liability. During typhoon season, it is protection you want in place. The cover details are in the renters insurance guide.

Prepare a basic kit

Beyond housing, keep enough at home to last 24 to 48 hours: water, a light, a power bank, some food. When a large typhoon approaches, trains stop as a precaution and some shops close. Keep your important documents and some cash within reach too: during an outage, ATMs and card terminals can be unavailable for a few hours. It is usually just a day, but it pays not to be caught out.

Should you avoid certain neighbourhoods?

No. Not all of Tokyo is a risk zone, and most residential areas are perfectly safe on a decent floor. The risk concentrates in specific low pockets near water. Even central, popular wards have both safe blocks and lower pockets, so judge the specific address rather than the district name. With the hazard map and the right floor, you can live almost anywhere without worry. For the rent-to-area trade-off, rent by neighbourhood gives the ballpark.

Typhoon season is part of life in Tokyo, and it is easy to manage with a few good reflexes when you find an apartment: a high enough floor, an address outside the low zones, and renters insurance. The rest is mostly a rainy day spent warm and dry indoors.

See also: [finding an apartment in Tokyo](/blog/find-apartment-tokyo-foreigner) and [renters insurance in Japan](/blog/renters-insurance-japan-guide).