Europe is living through its hottest reckoning yet. The summer of 2026 has brought four consecutive heatwaves across the continent, with temperatures climbing past 40°C, with hospitals filled past capacity, electricity grids buckled under demand, and city planners running out of easy answers.

That crisis has sent a wave of attention toward an unlikely source. For years, Africa has been considered the “hot continent,” and as a result, it has been seen as the place where climate adaptation is needed but yet underfunded. However, recent events in Europe, where countries are experiencing heat like never before, are pushing many to look to the way of the continent and to see whether they could borrow and adopt some of the ways African communities have learnt to live with high temperatures.

The answer to this newfound curiosity is not to simply uproot African building techniques and dump them in Europe but to reconsider an assumption that has shaped modern urban development: that rising temperatures can largely be managed by just adding mechanical cooling.

That approach is becoming harder to sustain. Europe is the world’s fastest-warming continent, and the summer of 2026, at least 35,000 excess deaths have been recorded across Europe during four consecutive heatwaves this summer, according to preliminary estimates.

For the non-expert, the temptation might be to adopt more air conditioning. But European homes have historically been built more to retain heat during winter than to keep it out during summer, said Anna Mavrogianni, Professor of Sustainable, Healthy and Equitable Built Environment at University College London’s Institute for Environmental Design and Engineering to Reuters.

But what about looking to how Africa has dealt with this problem?

That leaves European cities confronting a problem familiar to many African communities: how to remain safe and comfortable when temperatures rise, often without relying entirely on energy-intensive cooling.

Keeping the heat out

Adaptation comes in different shapes and forms across the continent. Sometimes they are highly engineered products of extensive research, and other times they are just remarkably simple. like reflective roofs, external shading, natural ventilation, vegetation, thick walls, shaded walkways, and building layouts designed around the movement of air and sun.

In Burkina Faso, when temperatures reached between 40°C and 50°C during the 2026 hot season, authorities combined heat alerts with public-health measures. The Burkinabè Red Cross created a heatwave response that is activated when temperatures reach 42.4°C for at least three consecutive days. It includes radio campaigns, home visits, water distribution, and advice to avoid heavy labor and seek shade.

“When peaks above 45°C hit Ouagadougou, the situation got out of our control,” Boureima Kombelemsigri of the Burkinabè Red Cross told Le Monde. “Health centers were overwhelmed, deaths among older people multiplied, and morgues quickly reached capacity.”

The Burkina Faso response is proof that heat adaptation is not just an architecture question. It includes the deployment of public-health systems, early-warning mechanisms, working hours, access to water, and the availability of shaded places.

But building remains central because much of a person’s exposure to heat occurs inside of them.

A study published in Nature Medicine tested relatively inexpensive modifications in rural western Kenya, including reflective roofs, cross-ventilation, and mat ceilings. The cool roofs produced the strongest daytime result, reducing mean indoor temperature by about 2.8°C compared with unmodified houses.

The researchers also found something that is easily lost in discussions about “simple solutions”: there is rarely a single solution that works everywhere.

Mat ceilings reduced daytime heat exposure but increased nighttime heat exposure by about 2°C, apparently because they trapped heat released by the walls. Cross-ventilation also performed poorly in some homes because residents closed windows at night for security reasons, while many houses did not have windows in the first place.

What this means is that even if “African solutions” are to be adopted; they must be designed around the realities of a particular place.

This is not a new warning. The Egyptian architect Hassan Fathy made a similar argument decades ago, cautioning against wholesale imports of glass-and-steel design into hot climates. He pointed to Kuwait, where adopting glass towers wholesale created solar loads the buildings were never designed to handle.

The architecture of adaptation

That principle has a much longer history. In hot parts of Africa, architects and communities have long used building orientation, courtyards, shaded passages, thermal mass and locally available materials to moderate heat. The World Bank’s Urban Heat Management Handbook highlights projects in Laayoune and Koudougou that incorporate fragmented building layouts, shaded walkways, overhangs, screens, natural ventilation and locally sourced clay to reduce heat accumulation.

These approaches are not necessarily “traditional” in the romantic sense. Some are contemporary interpretations of older principles, combined with modern materials and engineering.

This difference is important. A mud wall is not automatically a climate solution, nor is a courtyard appropriate for every climate. It is the design logic: prevent solar heat from entering, encourage useful air movement, store or release heat at the right time, and reduce the amount of mechanical cooling required that is important.

Egyptian architect Marwa Dabaieh, now internationally recognized for her zero-emission building work, traces her own approach back to time spent with Indigenous communities in Egypt’s western desert during her doctorate. She has said that experience taught her more about rooted, regenerative design than any textbook could. Dabaieh has since applied that knowledge through low-tech cooling systems—including traditional clay shisha funnels used in Egypt and Namibia—shown to cut indoor temperatures by roughly 5°C and reduce humidity by about 40%.

Some commentators have made the transfer argument explicitly. An Al Jazeera opinion piece argued that Europe should look to Africa for heatwave solutions, pointing to West African architects such as Diébédo Francis Kéré — the first Black winner of the Pritzker Prize — as pioneers of climate-smart design built on reflective roofing, thick local-material walls, and passive ventilation. The piece argued that as European housing stock ages and grids strain under air-conditioning demand, these low-energy design principles deserve serious attention.

And it is that logic that has now become increasingly relevant in Europe. European projects demonstrate that some of the same passive-cooling principles long used in hot African environments — shade before cooling, ventilation before air-conditioning, thermal mass before mechanical intervention — can also work in European settings. Whether or not any specific project drew direct inspiration from Africa, the underlying physics is the same.

In Germany, for instance, flooring firm Project Floors used reflective window film on a glass-domed building and reportedly reduced indoor temperatures by 10°C without using additional power.

Also in France, the Maison Air et Lumière demonstrated that automated external shading and night-time ventilation could keep a house 8°C cooler than the outside temperature on the hottest day of a July monitoring period. In Sicily, the Botticelli house used an internal patio, thermal mass, solar shading, and night ventilation to keep indoor temperatures below 28°C even when outdoor temperatures exceeded 32°C, without active cooling. And in southern France, the Izuba Energies office building’s estimated annual cooling requirement was just 0.8 kWh per square meter, helped by external shading, night ventilation, earth-based thermal mass and 37-centimeter straw insulation.

The question, therefore, is not about who thought of it first, but whether planners actually put these ideas to work — everywhere, not just in pilot projects.

Cooling without making the problem worse.

Air conditioning can save lives during dangerous heat, and it would be wrong to portray it as an unnecessary luxury. For elderly people, people with certain illnesses, and those living in extremely hot conditions, mechanical cooling can be essential.

But scaling air conditioning as the primary response creates another problem: electricity demand.

The International Energy Agency has projected that energy demand for fans and air conditioning in Africa could quadruple over the decade to 2030 as urbanization and climate change increase the need for cooling. Europe faces its own version of this problem. During the 2025 heatwaves, electricity demand surged across the continent, while low river levels and high water temperatures also constrained some power generation.

The choice, then, is not necessarily between air conditioning and doing nothing. A more resilient approach combines mechanical cooling with measures that reduce the amount of cooling required in the first place.

That is where passive cooling becomes particularly important.

A building with external shading, a reflective roof, adequate ventilation, and good orientation may require less energy to maintain a tolerable indoor temperature than an otherwise identical building exposed directly to the sun.

Sustainable Energy for All estimates that more than one billion people globally are already at high risk because they lack adequate access to cooling, with sub-Saharan Africa carrying the largest absolute burden

Africa’s challenge is therefore not simply how to stay cool without air conditioning. It is how to expand access to cooling while avoiding a future in which rising temperatures drive enormous new demand for energy-intensive appliances.

But Africa is not one climate.

Africa contains deserts, humid tropical coastlines, highland cities, savannahs and Mediterranean climates. What works in Ouagadougou may be inappropriate in Accra. A naturally ventilated house that works in a dry climate may perform poorly in a humid one.

Even within the same city, housing quality, income, security, household size, and access to electricity can determine whether a cooling intervention succeeds.

Recent research in Ghana, for example, found that indoor temperatures in some informal settlements were higher than outdoor temperatures. More than 80% of surveyed residents nevertheless reported thermal sensations ranging from slightly cool to slightly warm, suggesting that prolonged exposure to heat can alter what people perceive as comfortable. The researchers warn that this adaptation should not be confused with safety: higher comfort thresholds can coexist with physiological risk.

The same caution applies when African solutions are considered for Europe.

A shaded courtyard may work beautifully in a Mediterranean city but be less useful in a northern European climate. Natural ventilation depends on outdoor temperature, humidity, wind and air quality. Opening windows can also introduce noise, pollution or security risks. Thick walls can moderate temperature, but retrofitting existing European housing with high thermal mass is far more difficult than incorporating it into a new building.

And European cities have their own architectural constraints. Historic buildings, conservation rules, dense urban layouts, and expensive construction markets can make seemingly simple interventions difficult.

From technology transfer to knowledge exchange

Perhaps the most interesting lesson is therefore not a particular roof coating, tree-planting scheme, or building material but the value of treating heat adaptation as accumulated knowledge.

Many African communities have developed a coping mechanism for heat under conditions of constrained electricity access and limited purchasing power. That has encouraged attention to shade, building design, timing, materials, and community-level responses. At the same time, these communities are now experimenting with modern technologies, heat-warning systems, green roofs, and urban forests.

Freetown, for example, has incorporated cooling zones and corridors, tree cover and nature-based measures into its heat-action planning. Accra has set a goal of expanding natural spaces, while cities including Johannesburg and Nairobi are experimenting with green roofs and urban agriculture.

These efforts should not be romanticized. Africa’s adaptation deficit remains enormous. Researchers say robust evidence on the health benefits and scalability of passive cooling interventions in African communities is still limited. A major controlled study across Ghana and South Africa is now attempting to fill some of that gap.

That evidence gap is precisely why knowledge exchange should go both ways. Europe has enormous technical, financial, and institutional capacity to develop better cooling systems. African cities have extensive experience of coping with heat under very different constraints. The most useful future may therefore not involve Europe “adopting African solutions” wholesale, but architects, engineers, researchers, and city governments in both regions testing what works, where and for whom.