Kushiro's Cooling Shortage Shows How Extreme Heat Is Changing Hokkaido's Summer Refuge

Four Days to Sell Out of Cooling Equipment

At a home improvement store in Kushiro, on the eastern coast of Hokkaido, 130 fans and 70 air conditioners and spot coolers sold out in just four days during the summer of 2023. Emergency deliveries of more fans disappeared almost immediately. With cooling products exhausted, the store put heating equipment back on its shelves.

The rush followed three consecutive days with temperatures above 30 degrees Celsius (86 degrees Fahrenheit), an unprecedented stretch of heat for a city long known for cool, misty summers. Kushiro's average summer temperatures traditionally hovered around 20 degrees Celsius (68 degrees Fahrenheit), making it a refuge from the oppressive heat experienced elsewhere in Japan.

Air conditioning had often seemed unnecessary. Many homes and businesses had never installed it, leaving residents with few ways to cool their rooms when temperatures rose. The same climate that had made Kushiro attractive in summer had also shaped what households bought and what local shops kept in stock.

The shortage exposed an immediate problem: people needed cooling equipment at the same time, while retailers accustomed to serving a cool city had limited supplies. Fans, air conditioners and portable cooling units became urgent purchases rather than optional summer comforts.

Assistant store manager Koiwa Masahiro expressed concern that August could bring still more extreme temperatures. He described the store's priority as getting equipment to people who needed it.

"We want to offer air conditioners and other products to customers in need as soon as possible," he said.

His concern captured the pressure facing local businesses. Restocking was essential, yet the emergency shipments were selling almost as quickly as they arrived. Residents seeking relief were competing for a small supply of products that the city's traditional summer weather had rarely made essential.

A Cool Refuge Confronts a Different Summer

Kushiro's reputation rested on a familiar combination: cool ocean breezes, mist and relatively stable summer weather. For residents and visitors, those conditions offered relief from the hotter summers of cities such as Tokyo and Osaka.

Travel guides and online discussions had recommended Kushiro to people looking for somewhere comfortable during Japan's hottest months. One Reddit user, describing the city's reputation for mild weather, put that expectation plainly.

Maybe the only place in Hokkaido I know of that doesn't need AC is Kushiro.

The summer of 2023 challenged that assumption. A place accustomed to temperatures around 20 degrees Celsius had to cope with several days above 30 degrees. Residents who had made reasonable choices for the climate they knew suddenly needed equipment they had never considered necessary.

Hokkaido is Japan's northernmost island, but Kushiro's experience showed that its location and reputation for cool weather offered limited comfort during an extreme event. The practical change was felt inside homes and businesses, where the absence of air conditioning became a problem during the hottest days.

How the Local Heat Fits Japan's Record Summer

Japan experienced its hottest summer in 2023 since records began in 1898. The national average temperature was 1.76 degrees Celsius above the average for a reference period of 30 years, and more than 100 monitoring stations set new temperature records between July and August.

The 1.76 degree figure describes a change in the national average. Kushiro's run of days above 30 degrees describes the heat residents experienced locally. Together, the figures connect a nationwide warming pattern with the immediate conditions that sent shoppers searching for cooling equipment.

The dates behind the story also show how the shortage fitted into a wider period of change:

• In 2022, the Furusato Kaiki Shien Center received more than 52,000 inquiries about moving from urban to rural areas.
• During the summer of 2023, Kushiro recorded three consecutive days above 30 degrees Celsius, and a local store sold its cooling stock in four days.
• Between July and August 2023, more than 100 monitoring stations across Japan set new temperature records.
• Japan's summer of 2023 became its hottest since records began in 1898.

What Drove the Extreme Temperatures?

High pressure systems helped trap hot air over the Japanese archipelago and prevented cooler air from moving in. When those conditions persist, the heat can build instead of being replaced by cooler weather.

Typhoons and record sea surface temperatures in the surrounding oceans also contributed to the heat and disrupted normal weather patterns. The surrounding sea, usually central to the climate of coastal places such as Kushiro, was part of the wider set of conditions affecting Japan's summer.

Global warming is making heatwaves more frequent and severe, including in regions previously regarded as sheltered from such extremes. Japan's hotter and longer summers form the broader setting for Kushiro's sudden need for cooling.

Scientific studies examining storm tracks and unusual precipitation patterns in Hokkaido also point to increasingly unpredictable weather. Storm tracks describe the routes weather systems follow; precipitation anomalies are departures from the rain or snow normally expected. Changes in those patterns can unsettle familiar expectations about a season.

Kushiro had benefited from cool ocean breezes and stable summer conditions. Its experience in 2023 showed how difficult daily life can become when an unusually hot spell reaches a community whose buildings, shopping habits and retail supplies reflect a cooler climate.

How Residents Tried to Stay Cool

Residents without air conditioning had to find other ways to cope while stores struggled to replenish supplies. Some went to shopping centers or libraries for relief. Others used cold showers, wet towels or open windows at night.

Those measures offered limited comfort during the hottest days. A household could change its routine immediately, but installing air conditioning depended on being able to obtain equipment. The rapid sellout narrowed that option precisely when demand was greatest.

Older people and people with chronic health conditions faced the greatest risks. Health officials in Japan and elsewhere warn that extreme heat can be deadly, especially for people without access to air conditioning.

Heat exhaustion can cause heavy sweating, fatigue, dizziness and nausea. It can progress to heatstroke, a condition that threatens life. Recognizing illness and getting someone out of the heat are therefore central to the response.

The United States Centers for Disease Control and Prevention recommends moving affected people to an air conditioned space, offering water and seeking medical help if symptoms worsen. For Kushiro, the shortage made access to a cooler place an immediate health concern as well as a household purchasing problem.

Public spaces provided some residents with relief, while the scramble for equipment showed why preparations need to reach people who cannot cool their homes. The challenge extended beyond selling more appliances to protecting those most exposed during a hot spell.

Cooler Places Attract Interest, but Also Grow Warmer

Kushiro's experience sits alongside growing interest in moving to cooler parts of Japan. Katsuura and Kitaibaraki, both known for temperate climates, have seen a surge in relocation inquiries as people reconsider the conditions in which they live.

The Furusato Kaiki Shien Center, which helps people move from urban to rural areas, received more than 52,000 inquiries in 2022. Cooler summers were among the attractions drawing people toward relocation. Rising electricity costs and the health risks of extreme heat were also motivating concerns.

Residents in Katsuura and similar cities have nevertheless described warmer summers and a growing need for air conditioning. A move toward a place with a milder reputation can still involve preparing for temperatures beyond what local households once expected.

Major cities continue to attract people through jobs and urban convenience. Heat adds another consideration to that decision: whether a home is comfortable in summer, how much cooling costs and what support is available during extreme weather.

Kushiro illustrates the same practical tension. Its cool climate was an advantage for residents and visitors, yet the hot spell created a sudden need for equipment and services associated with warmer places.

The Costs Reach Shops, Homes and Workplaces

Retailers in Kushiro faced a change in demand that traditional stocking patterns had left them poorly placed to meet. The store that sold 130 fans and 70 air conditioners and spot coolers in four days then had to pursue emergency supplies.

Rising demand for air conditioners can strain supply chains and bring shortages to unexpected places. Businesses serving cities known for cool summers must reconsider how much cooling equipment customers may need and how quickly more stock can arrive.

Households face a second difficulty after finding an appliance: paying to run it. Rising electricity costs make adequate cooling harder to afford for vulnerable residents, increasing their exposure to illness during extreme heat.

Local businesses also have to think about conditions for employees. Responses used elsewhere include changing working hours to avoid the hottest parts of the day and providing fans or portable air conditioners.

Kushiro's shortage connects these pressures. Shops need appropriate stock, households need access to cooling, and workplaces need ways to protect staff. Each becomes more urgent when a familiar summer climate changes faster than everyday preparations.

What Other Heat Responses Offer Kushiro

Communities in the United States have responded to similar heat emergencies by opening cooling centers and distributing fans to residents at risk. Cooling centers give people somewhere to escape high temperatures when their own homes offer little relief.

Cities in the United States, Europe and other parts of Asia have also used schools, libraries and community centers as places where people can cool down. These approaches offer possible models for Kushiro and other Japanese cities facing unfamiliar heat.

Public health campaigns encourage people to stay hydrated, wear lightweight clothing and limit outdoor activity during the hottest parts of the day. Businesses can support those measures through working hours that reduce exposure and equipment that makes workplaces more comfortable.

Kushiro's needs also extend to homes, schools and public buildings. Investment in cooling systems would increase the number of places where residents can find relief. Emergency response plans and public education would help communities recognize dangerous conditions and protect vulnerable people.

Energy efficiency and renewable energy are among the proposed ways to manage the greater electricity demand that comes with increased cooling. For households already concerned about bills, the cost of staying cool is part of preparedness.

Local governments, businesses and residents all have a role in those changes. The central lesson from the 2023 shortage is concrete: a city accustomed to mild summers needs equipment, accessible cool spaces and health preparations ready before demand surges.

Key Points

• Kushiro experienced three consecutive days above 30 degrees Celsius in the summer of 2023, challenging its reputation for cool, misty summers.
• A local store sold 130 fans and 70 air conditioners and spot coolers in four days. Emergency fan deliveries also sold out rapidly.
• Japan's summer of 2023 was its hottest since records began in 1898, with the national average 1.76 degrees Celsius above the average for a reference period of 30 years.
• Residents without air conditioning sought relief in public spaces or used cold showers, wet towels and open windows at night.
• Older people, those with chronic health conditions and households struggling with electricity costs faced particular risks.
• Cooling equipment, public cooling spaces, emergency planning and energy efficiency are central to preparing communities accustomed to cooler weather.