In Japan, the ground moves almost every day. It’s one of the first things travelers worry about, and it’s a fair question. The good news: in the vast majority of cases you’ll feel nothing, and when you do feel something, it will be a small, harmless tremor. The country has lived with earthquakes forever, and everything is built around them: the buildings, the trains, the alerts, people’s instincts.
This guide explains what really happens, what to do in the rare moments when it shakes hard, and how to keep an eye on the situation in real time. Without drama, but without hiding anything either.
Japan shakes every day
The archipelago sits where four tectonic plates meet. The result: more than a thousand felt earthquakes a year, and thousands more too faint to notice. Almost all are micro-tremors. The major quakes are rare and concentrated in certain areas, often offshore. Over a two or three week trip you might feel one or two small jolts, often at night, that you’ll first mistake for a passing truck.
It’s shindo, not magnitude
In Japan, day to day, almost nobody talks about magnitude. They use shindo, the intensity scale from 0 to 7. The distinction matters: magnitude describes the energy released at the epicentre, while shindo describes what you feel where you are. A large offshore quake can register a low shindo on the coast; a small one right under your feet can feel sharper. Up to shindo 3 it’s nothing. From 5, objects move and trains stop as a precaution.
Two things may catch you off guard. First, the alarm. Japan has an early-warning system, the Kinkyū Jishin Sokuhō: a few seconds before strong shaking, every phone in the area sounds at once, a piercing and unmistakable tone. It’s startling the first time, but it’s good news, it gives you a moment to take cover.
Second, the trains. After a notable jolt, the affected lines stop automatically while the tracks are inspected. Your day can shift by a few hours. In practice, things resume quickly.
The suspended lines were “fully operational in the next few hours,” aside from some delays through the day.
What to do during an earthquake
The Japanese reflex is three moves, and definitely not running outside, where glass and roof tiles fall.
- Drop to the floor before the shaking knocks you down.
- Cover under a sturdy table and protect your head.
- Hold on until it stops, keeping a grip on the table leg.
On a train, hold the rails. On the street, move away from facades and vending machines. In a department store, stay inside and follow the staff, who are trained for this.
On the coast, the real danger isn’t the shaking but the tsunami that can follow. The rule is simple: if you’re by the sea and the shaking is strong or long (more than a minute), don’t wait for an official alert, get to high ground or the upper floors of a solid building immediately. Coastal areas are lined with evacuation signs pointing to the nearest high point. When an advisory or warning is in effect, a banner shows on our map and local sirens sound.
The apps and alerts to have
Install one before you go. The most useful for travelers is Safety Tips, the official tourism-board app, which translates alerts into English. NHK World streams official information around the clock, and Yahoo! Bosai is the local standard. For the raw source, the Japan Meteorological Agency publishes everything in real time. Good to know: the emergency alerts reach every phone in the area, whatever your connection, an eSIM, pocket wifi or a local SIM.
Should you cancel or change plans?
Almost never. Japan is large, and a quake that hits one region usually has no effect a few hundred kilometres away. A tremor off the Tōhoku coast changes nothing about a stay in Kyoto, Tokyo or Nagano.
An anxious traveler asks whether a trip to Tokyo, Nagano and Kyoto is a problem. The thread’s reply: why would those areas be an issue, they’re very far from the affected region.
The live map
To follow the situation hour by hour during your trip, keep our map handy. It updates continuously from the official JMA feed.
Check the live map of earthquakes, tsunamis and typhoons in Japan, updated continuously.
Frequently asked questions
Is Japan dangerous because of earthquakes?
No. The buildings are among the most earthquake-resistant in the world, the codes have been strict for decades, and the tremors travelers feel are almost always minor.
What do I do when the alarm sounds?
Take cover under a table, protect your head, wait it out. The tone warns you a few seconds before the shaking.
Do the trains stop?
Yes, as a safety measure, while the tracks are inspected after a notable jolt. Service usually resumes within a few hours.
Does my travel insurance cover earthquakes?
Most good policies cover natural-disaster costs, such as a cancellation or an unplanned hotel night. Check the clause before you leave.
Should I worry about the predicted “megaquake” (Nankai Trough)?
No. The 70 to 80 percent chance of a major Nankai Trough quake within thirty years has been the standing figure for years: it’s a long-range statistic, not a date. In August 2024 Japan issued its first-ever precautionary “megaquake advisory,” which was lifted a week later. No science can predict the day of an earthquake, let alone line it up with your trip. Don’t cancel; just take out insurance that covers natural disasters.
A big quake hit before my trip, should I cancel?
Look first at where it struck. If your itinerary is far from the area, there’s usually no reason to cancel. Follow official guidance and the live map.
Keep these handy during your trip: the live map, and our guide to typhoon season in Japan if you’re traveling between May and October.