Why have daily heat-related hospitalisations in Tokyo hit a record high?

Question

Accepted Answer

Daily Heat-Related Hospitalisations in Tokyo Reach Record High Due to Severe Heatwave

Tokyo experienced its highest number of daily heat-related hospitalisations since records began in 2010 on Wednesday, with 453 individuals requiring emergency medical attention. This surge in admissions directly correlates with the escalating temperatures, a trend confirmed by emergency services, which also reported a 63-year high in the deployment of emergency services on the same day. The severity of the heatwave is further underscored by the fact that four locations in Japan's central region exceeded 40 degrees Celsius, a threshold now formally recognised with the new term "kokushobi" to highlight the danger of such extreme heat.
Record-Breaking Daily Admissions

On Wednesday, 453 people in Tokyo were hospitalised due to heat-related conditions, marking the highest daily figure since the Tokyo Fire Department began its record-keeping in 2010. This unprecedented number of admissions reflects the intense and prolonged nature of the current heatwave impacting the metropolitan area. The fire department noted a direct relationship between rising temperatures and the increased demand for emergency medical services, indicating that the heat's impact is escalating as the mercury climbs.
Critical and Serious Cases Amidst Widespread Alerts

Among the 453 hospitalised individuals in Tokyo prefecture, one person succumbed to the heat, four were in critical condition, and 18 were reported to be in a serious state. These figures highlight the life-threatening potential of the extreme temperatures. Heatstroke alerts were issued across nearly the entire country, signalling a nationwide public health concern. In the broader context of Japan, nearly 11,000 people sought emergency medical care for heat-related issues over the past week, with at least 14 fatalities recorded during the same period.
Extreme Temperatures and Public Health Warnings

The heatwave has seen temperatures soar, with four locations in central Japan recording temperatures above 40 degrees Celsius on Wednesday. This phenomenon has led to the introduction of the term "kokushobi" this year, translating to "cruelly hot day," to draw heightened public awareness to such dangerous heat levels, even though it does not trigger official nationwide measures. The Fire and Disaster Management Agency has urged the public to treat the extreme heat as a "disaster," emphasising the severity of the situation and the need for precautionary measures.
Scientific Context of Extreme Heat Events

Scientists attribute the increasing frequency and intensity of extreme heat events, such as the current heatwave in Japan, to human-induced climate change. This global phenomenon is contributing to more severe and prolonged periods of high temperatures worldwide. Japan itself experienced its hottest summer on record last year, with the highest recorded temperature reaching 41.8 degrees Celsius in August 2025, further illustrating the escalating trend of extreme heat in the region.

Reading history

Hide →

This history is cleared when the page is closed.

Why have daily heat-related hospitalisations in Tokyo hit a record high?

Loading

Was this article helpful?

Helpful

Not helpful

Report an issue

2

0

0

Share with friends