Japan sizzles in first 'brutally hot' days of the year
Japan faces record-breaking heat as officials designate the first 'kokushobi,' or 'cruelly hot day,' of the year.
Velocity
How fast coverage is spreading — measured hourly from article rate × source diversity. How this works →
The brief
Temperatures across Japan have climbed above 40 C, marking the ninth consecutive year the country has reached this threshold. In Tokyo, the heat wave has resulted in over 260 hospitalizations.
The extreme conditions have led authorities to officially classify the period as "kokushobi." Coverage from The Weather Channel, BBC, RTE.ie, The Guardian, Yahoo, and Japan Wire by Kyodo News emphasizes the intensity of the heat and the introduction of this new nomenclature. Outlets are tracking the rising temperatures across central Japan.
Future reports will track whether temperatures remain above 40 C or if the current heat wave subsides. Further data regarding hospital admissions and the sustained impact of these "cruelly hot days" is expected as the weather persists.
Synthesized by PULSE from the headlines below under a strict no-invention contract. ✓ fact-checked: all claims supported by sources Updated 6h ago.
Quick answers
What is a 'kokushobi'?
It is an official designation used to describe a 'cruelly hot day' in Japan, now applied as temperatures rise above 40 C.
How many years has Japan hit 40 C?
According to coverage from 毎日新聞, this is the ninth consecutive year temperatures have reached this mark.
What is the impact on Tokyo residents?
Japan Wire by Kyodo News reports that over 260 people have been rushed to hospitals in Tokyo due to the persisting heat wave.
Coverage (8)
- It's so unbearably hot in Japan, they invented a new name for it The Weather Channel · 2d ago
- Over 260 rushed to hospitals in Tokyo as heat wave persists Japan Wire by Kyodo News · 2d ago
- Japan swelters as temperatures top 40 C for ninth consecutive year 毎日新聞 · 2d ago
- Japan cities 'cruelly hot' for first time RTE.ie · 2d ago
- Central Japan cities hit 40 C, officially marking first "kokushobi" Japan Wire by Kyodo News · 2d ago
- Japan temperatures soar over 40C, marking first 'cruelly hot day' BBC · 2d ago
- Japan swelters through rising heat The Guardian · 2d ago
- Japan sizzles in first 'brutally hot' days of the year Yahoo · 2d ago
Topics
Related trends
Head of Swiss euthanasia firm dies while climbing Mount Fuji; 99-year-old woman rescued
Mount Fuji reports multiple climbing incidents as authorities grapple with rising fatalities and rescue operations early in the 2026 season.
It’s So Hot That Japan Needs a New Word for It
5 news sources are covering this World story right now — PULSE is tracking how fast it spreads.
Global shares trade mixed as Brent oil keeps rising due to fighting in Iran
2 news sources are covering this Business story right now — PULSE is tracking how fast it spreads.
Tokyo urges men to wear shorts to work, but some women say it's 'leg hair harassment'
Tokyo's new workplace initiative encouraging men to wear shorts has sparked debate over professional standards and visibility of body hair.
World shares mostly gain and South Korea and Japan recover some losses from AI stock sell-offs
3 news sources are covering this Business story right now — PULSE is tracking how fast it spreads.
Japan protests Chinese live-fire drill in nearby waters
5 news sources are covering this World story right now — PULSE is tracking how fast it spreads.