A further 380,000 people were advised to flee because of heavy downpours in Kumamoto and Nagasaki, on the southern island of Kyushu, officials said.
Evacuations were ordered in Kumamoto after 23 centimetres of rain fell in one day. Nextdoor Nagasaki had 31 centimetres over the same period.
Television footage showed mud and brown water gushing into homes, with hillsides collapsing, blocking roads and damaging houses.
"We have received no reports of injuries," an official said.
Forecasters said the bad weather was expected to continue, with some parts of Kumamoto set to get several more centimetres of rain overnight.
Japan's rainy season is in full swing over much of the country, a month-long period of often ferocious and prolonged downpours.
As a mountainous country with little space available for its 127 million population, landslides in habitable parts of Japan are common, despite the widespread concreting of hillsides in an effort to shore them up.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
