Extreme Heat Costs Japan 7.8 Trillion Yen a Year, and Builds a Market

Travellers already feel it; businesses in Japan see it in their accounts. ITmedia reports that extreme heat costs Japan roughly 7.8 trillion yen a year, in a country where days above 40 degrees no longer count as news. The same report shows the other side: Kuchofuku and Daikin have turned heat itself into a business.

The loss accumulates rather than arriving at once. Outdoor working hours shrink, construction and logistics shift to early morning and night, crops suffer, foot traffic thins because people will not linger outside, and heatstroke drives medical costs and absence. Each item looks small; together they reach trillions of yen, and they return every year.

The opportunity is equally concrete. Fan-equipped workwear addresses the fact that some people must work in the heat; air conditioning keeps rooms usable for work and sleep. Neither company depends on one hot summer — both depend on heat becoming permanent, which turns a seasonal product into base equipment.

Heat also travels into prices, through crop losses, cooling and transport costs, pushing the opposite way to the food tax cut now under discussion.

Three paths follow: cooling shifts from option to standard, lifting peak power demand and electricity costs; labour rules tighten, stretching construction schedules and raising freight costs; or summer tourism redistributes toward cooler regions.

If you own property in Japan, note that much of the existing housing stock was built for milder summers. Insulation and window specification belong in your purchase budget.