# It’s So Hot That Japan Needs a New Word for It

> **Open Intelligence Dossier** · First detected: 2026-07-23 13:07 UTC · Category: World

## Executive Summary
Japan has introduced the term 'kokushobi' to describe 'cruelly hot days' as temperatures hit 40 degrees Celsius and heatstroke cases soar.

## Intelligence Brief
Japan is currently experiencing a severe heatwave that has prompted the introduction of a new term, "kokushobi," to describe "cruelly hot" or "brutally hot" days. According to reports from Japan Today and The Guardian, cities in central Japan have officially recorded temperatures hitting 40 degrees Celsius, marking the first occurrence of these conditions this year. This extreme weather has led to a significant public health crisis, with Japan Today reporting that hundreds of people have been hospitalized in what is being described as a heatwave "disaster." The scale of the emergency is emphasized across multiple outlets. The Japan Times and nippon.com both report that the number of weekly emergency heatstroke cases has risen above 10,000.


Newser and The New York Times highlight the linguistic shift, noting that Japan has coined this new term specifically to warn the public about the dangers of these deadly heat days. Reuters further describes the situation as the country sizzling through its first "brutally hot" days of the year, while The Seattle Times reinforces that the intensity of the weather has necessitated this new vocabulary. This trend matters now because the heat is not an isolated incident but part of a broader regional pattern. Bloomberg.com reports that Asia is set to swelter throughout the coming week, which creates a secondary risk by threatening energy supplies across the region.


The combination of record-breaking temperatures in central Japanese cities and the resulting surge in hospitalizations illustrates the immediate physical danger to the population and the systemic pressure on health and energy infrastructure. Looking forward, the focus remains on the continuing weather patterns in Asia and the stability of energy grids. Coverage indicates that the region will continue to experience extreme heat next week. Observers will likely monitor if more cities reach the 40-degree threshold and whether the number of heatstroke cases continues to exceed the 10,000-per-week mark as the "kokushobi" conditions persist across the country.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| The Seattle Times | It’s so hot that Japan needs a new word for it | [Source Link](https://news.google.com/rss/articles/CBMikgFBVV95cUxPbTRtNE1XaUdCM0JxSVNQRFZIVXl6QS1OYlRKN1JsVEkzWUVuLTZPdl9pNEFRbVdkYWJvVXJnT1N1eGZPNFFmOW1FVERBTTRZY0xveWRXdGJHMGVrMmI0bUZCak0wOVVCR3R0eWdNdUtLVkFrYWtzOE1tcWRjNDM2NWU1M19DY3JfVXpRZFRwVU5FZw?oc=5) |
| The Guardian | Japan records its first ‘cruelly hot day’ as cities swelter in 40-degree heat | [Source Link](https://news.google.com/rss/articles/CBMilAFBVV95cUxPXzNLaFFVTUhhRzRCMWxXSFBRTmNmUU8xdjBzaDRZbFpUNmN1OXJOdzdOLXdReC1uRlFOSlZKTjgwN19OdXhhZUpWd3U5TlJwcTg5b1lCWVY0Ri1hWmN5bWxTaHczS0FWTmhwcGxmc1k0Qi1zOFRtbGVrQmkyS0VVWUg4dHNjX2QyOEdlQXh0MENXQ3p6?oc=5) |
| nippon.com | Weekly Emergency Heatstroke Cases Rise Above 10,000 in Japan | [Source Link](https://news.google.com/rss/articles/CBMiV0FVX3lxTE1Oeng3d3ZYN0hnU01Bbm5PUXZZdmRYSC1WcUxjaDRidXRTU0hzUklhZjhfa0JIVms5SWpyVUJuV2wwWTlmRFByZ0Z5ejR6R0p0d3g1Z00wUQ?oc=5) |
| Bloomberg.com | Asia Set to Swelter Next Week and Threaten Energy Supplies | [Source Link](https://news.google.com/rss/articles/CBMitgFBVV95cUxNN0VIZVl1ODd2M1VuYUJ3SFlaeWdZSmR5S056azdWUlQ1Z1NsZE5DZkRBOHgzemtsYXFzaUlEWW1ycERXck1zTnZQdkNmZnp3Rmd3ZmIySEp3ZVFKNjBQbjlTc0ItSkMyelJSV0tvei1TR0tMQXVyck9qVlRTTzJvTmpLQUozZG1fcDFVNzEtRTNGT0daTk9hZGhhNWVod25scV9kVVBEdFJqR3BpY0Y0Ty1oUWlsQQ?oc=5) |
| Japan Today | Hundreds hospitalised in Japan heatwave 'disaster' | [Source Link](https://news.google.com/rss/articles/CBMilgFBVV95cUxQbGxsNXNiOVdiaW5Jal9kZW1adGFKWWlpa2ppZy1ZTkc5cUhiOEhDS3Qwb3BsX1NpNXUwUXAwNmJOZkRza014Qi1YdVVhLU1MMk1kRnVqOGJhX3ZCQ0ozZ01fQ1paajBMUlNhWmhoSlhUdnV2cDlvM0thR05iVkIxYWNGV2dlYUhLVG9mRHczRVFpQjlfc3c?oc=5) |
| Japan Today | Central Japan cities hit 40 C, officially marking first "kokushobi" | [Source Link](https://news.google.com/rss/articles/CBMiswFBVV95cUxQS1RFQ05IR1U4cndTUjhBVWFMYTM4ZHdoR0d2Uko2bG1wVHlXWTg0YmFnUTcxcks1QTI1TW1VRWlJb2hWVDNBTGg1VnNRZWswRGRJVTlzeFgtMVF1N0dkUjRtUko1bG91SWJmelc2UDJCdHJQTzhWcWItNzJubU91eWVmR1ZKdlNlc25VcHlBQUd1RDZDalkyZHRKVm02MXJTdFFBeU9EUzIydUt6OWNuYUNvZw?oc=5) |
| Reuters | Japan sizzles in first 'brutally hot' days of the year | [Source Link](https://news.google.com/rss/articles/CBMioAFBVV95cUxNQlpuM3BwUmptbXhMTmczV2hSbTBXODVxd3BsYmZ4eE15YzZOcEUwbTJRc3JXdDUxZG56dTFVWGhRT0cyREFrYVBNN2htRy0xVEtjM0YwcGtaZVJaTkN1bEhneWxXVFp5N2Z5WTZSZnRCYVJOanZnTmlTRHIxNkNBcW1hWGhuWTVVSWRZT29zT2RVSG55c2ZaLTlWRlhOYkJH?oc=5) |
| Newser | Japan Coins New Term to Warn of Deadly Heat Days | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxQMVVFVjVZN0FCWXl4X19YdG9CZ25idUdBa1JnOUF1N1dfWjRpYUJueGtEUWtlTDNUTGU3cWM1RmFTTVF0eUNCMDE5dlZueEdPOVNqeXRTRzN3M2hOeElSbUdVMGZYNjhOd1BINFo5VHhqa3pfNmxkdjFqT3pmVkZoZEh3cFJ2WFRHbzMxV2tUTmx3Tk0?oc=5) |
| The Japan Times | As Japan bakes, over 10,000 rushed to hospital for heatstroke in a week | [Source Link](https://news.google.com/rss/articles/CBMihwFBVV95cUxNTVZ3OHViMXE2Zmg4cXRIYXhLc0I1ZEVOakNfRG1WWWd4ZHd2b3NBUlRheTJoNWl4UVRoTkFjQi1VbndYc0dHNE9zM3lpY3BrekNwRk5jRlhfS09PLTM5YzBtbUtjaTh1OHZGZjRDNzNVYjhBVFh1VUZFSHpRZzdIRUpkVG9IaFE?oc=5) |
| The New York Times | It’s So Hot That Japan Needs a New Word for It | [Source Link](https://news.google.com/rss/articles/CBMihAFBVV95cUxNejNncWRzU0xaMVFNdTJ6SGNSbHU4X0Jfeklta3NLbEJuY1J6dG55UjhreHR0RlZvLWRlWVVMWGc0VmstY0pVOVNOSXBreldoRE9SWF9IWEVQXzYxOVlFQWp0VVZrWHVRQ0JuRHRNSVpBd3BMM3dBM3dvQTZfZUVvVmVQX3E?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-07-23/it-s-so-hot-that-japan-needs-a-new-word-for-it*