Where Can I Cool Down in Japan During a Heat Alert?

Where should I go first when a heat alert is active?#

Go to the nearest cool indoor place before deciding what to do next. As of July 2026, Japan’s Ministry of the Environment and Japan Meteorological Agency issue a Heat Stroke Alert by region when the forecast WBGT (Wet Bulb Globe Temperature) reaches 33 or higher. The alert is a signal to avoid unnecessary outings and exercise, not a number to endure until your booking is complete.

Use this decision flow:

1. Is anyone dizzy, nauseated, unusually weak, confused, faint, or unable to drink? Stop immediately. Move to air conditioning or shade, ask staff for help, and call 119 for collapse, confusion, seizure, loss of consciousness, extreme weakness or inability to drink.
2. Is there a municipal cooling shelter nearby? Check the city, ward or town website and the sign at the facility. Go there if it is open and accepting visitors.
3. Is no shelter listed or is it closed? Use the nearest station concourse, shopping mall, department store, library, museum, hotel lobby, café or restaurant where visitors are allowed to stay.
4. Does the next outdoor stop require a walk, queue or hill? Cancel or postpone it. Do not remain outside to finish the sightseeing plan.

The fastest safe choice is usually the closest building, not the most famous attraction. Ask a station employee, police box officer, hotel receptionist or shop worker: “Where is the nearest cooling place?” Showing the words “cooling shelter” or クーリングシェルター on your phone can help.

How do municipal cooling shelters work?#

Some municipalities designate public and private facilities as cooling shelters (also called cooling-off spots). A designated library, community centre, government building, shopping facility or other participating site may display a local sign. Tokyo’s official visitor guidance also tells people to use designated cooling shelters and monitor the heat index.

The important point is that designation does not make every facility a 24-hour refuge. Before walking there, check:

What to check	Why it matters	What to do
Activation period	Some shelters operate only during the municipality’s heat season or on designated alert days	Check the local authority’s current list
Opening hours	A library or public office may close in the evening or on a regular holiday	Go during the posted hours; choose another building if closed
Eligible area	A municipality may list shelters by city, ward or district	Search the authority for the exact place you are visiting
Capacity and seating	A shelter may have limited seats and may not guarantee a bed or private room	Follow staff directions and do not block entrances
Facility rules	Food, drinks, luggage, photography and pets may be restricted	Read the sign or ask before settling in
End of service	The cooling service may end before the building itself closes	Plan the next indoor stop before leaving

For a visitor, the practical rule is simple: use the shelter to cool down and recover, not to sleep, store luggage or wait indefinitely. If the webpage is only in Japanese, ask accommodation staff or a visitor centre to identify the current list. Do not assume last year’s map or a social-media post still reflects this summer’s opening rules.

Which ordinary places can I use between sightseeing stops?#

Stations, malls and libraries are useful because they are often on a route you already need to take. Department stores, museums, cinemas, large bookstores, cafés and restaurants can also provide a cool place to sit. Your hotel or ryokan is the most reliable option if it is close enough to reach without a long walk.

Each type of place has a different failure point:

Place	Useful for	Check before staying
Train station	A fast route to air conditioning, toilets and staff	The concourse may be hot, crowded or accessible only behind a ticket gate; do not sit by gates or on stairs
Shopping mall or department store	Longer indoor recovery, food and toilets	Hours, seating policy and the distance from the nearest entrance
Public library	Quiet seating and air conditioning	Opening days, library-card rules for some services, food and drink restrictions
Museum, cinema or gallery	A planned indoor replacement for an outdoor sight	Admission, timed entry and closing time; do not buy a ticket just to treat it as an emergency room
Café or restaurant	A place to sit, drink and eat	A purchase may be expected, seats may be limited, and staff may ask you to leave when finished
Hotel or accommodation	Best place for a full reset	The walk or train ride back may be unsafe if someone is already ill

Do not confuse a vending-machine stop with cooling down. Buying a drink while standing in the sun does not give an overheated person time in air conditioning. Sit down, loosen tight clothing, cool the skin, and offer fluids only if the person is alert and can swallow. If the person is getting worse, ask the nearest staff member to call an ambulance.

How should I check the heat information before leaving?#

As of July 2026, check the official Heat Stroke Alert page the evening before and again in the morning. The alert is issued for one of Japan’s regional areas, so check the region containing your actual route rather than the forecast for a different city. The official page also provides current and forecast WBGT information.

Use the number as a planning trigger:

WBGT or alert information	A sensible travel decision
WBGT below 25	Outdoor activity may be more manageable, but continue normal breaks and fluids
WBGT 25–28	Take frequent rests; avoid stacking walks, stairs and queues
WBGT 28–31	Treat long outdoor sightseeing as a poor plan; make indoor stops the backbone of the day
WBGT 31 or higher	Avoid outdoor exercise and keep outside travel as short as possible
Heat Stroke Alert, WBGT forecast 33 or higher	Avoid unnecessary outings, use cooling facilities and change the itinerary
Special Heat Stroke Alert	Postpone non-essential outdoor sightseeing and keep the day predominantly indoors

The alert is regional and WBGT can differ between a shaded street, a paved plaza and a waterfront. Cloud cover also does not guarantee safe conditions. Check the immediate forecast, then choose a building-to-building route with no long exposed gap.

What symptoms mean that I should stop the plan?#

Headache, nausea, dizziness, muscle cramps, heavy sweating, unusual tiredness, weakness and a sudden change in normal behaviour are reasons to stop and cool down. Tell your companions clearly that the plan has ended for now. A person may minimise symptoms because the group has a reservation or because the next sight is only ten minutes away; that is exactly when the route should change.

Call 119 for fire or ambulance service if someone collapses, loses consciousness, becomes confused, has a seizure, is extremely weak or cannot drink. JNTO lists 119 as Japan’s urgent fire and ambulance number. Give the operator the building name, station name or address. Station, mall, library and hotel staff can help identify the location and guide responders.

While waiting, keep the person in a cool place, loosen clothing and cool the neck, armpits and groin with cool wet cloths if available. Do not force drinks, give medicine as a substitute for medical help, or make the person walk to a clinic. If you are uncertain, ask staff to call 119 and explain the symptoms.

Which heat-alert plans fail most often?#

Failure pattern	Why it fails	Better decision
Walking to a shelter without checking its hours	The designated facility may be closed, full or active only on specific dates	Confirm the local list and keep two ordinary indoor alternatives nearby
Treating a station as a guaranteed lounge	Stations have passenger-flow rules and may have few seats	Ask staff where waiting is permitted; move to a mall, library or café if needed
Planning outdoor sights back-to-back	Queues, pavement, stairs and transfers add up faster than the map suggests	Put one outdoor block between substantial indoor stops
Starting early and trying to finish everything	Fatigue accumulates, and the afternoon may still be dangerous	Make the middle of the day indoor and cancel the final outdoor stop if needed
Continuing because the next landmark is close	Symptoms can worsen during a short exposed walk	Enter the nearest cool building immediately and reassess there
Assuming a café is free seating	Seating may depend on a purchase, time limit or availability	Ask permission, buy only if appropriate, and leave when staff instructs

The successful plan is not the one with the most stops. It is the one that lets everyone reach a cool place before symptoms begin. During a heat alert, change the route early, use official cooling-shelter information, and let health take priority over the day’s original schedule.