08 December 2025

What municipalities can do now:

• Use heat-maps to prioritise hotspots and match them to social spots
• Invest in fast, low-tech shade and greening
• Invest renewable energy -powered cooling in public buildings
• Build cross-department Heat & Health Action Plans
• Engage citizens and social services from day one.

In many cities across Europe, the number of heat-wave days has risen dramatically – by 10 to 15 days per decade between 1981 and 2010 in some regions. Tropical nights (when temperatures don’t drop below 20 °C) are becoming more frequent. The result: increased heat-related illness, mortality, and social inequality during hot days.

Investing in heat resilience is not just climate-policy posturing. It’s about protecting health, closing equity gaps, reducing long-term energy costs — and building cities where people can continue to live and thrive, even as summer temperatures climb. With its launch of open-source resources and the pilot implementation report, Ready4Heat gives you a solid toolkit to get started as a municipality looking into updating its adaptation plans.

The four long-term solutions implemented:

• Green “urban islands” (Hajdúböszörmény, HU): 47 “green islands” were installed at 23 public-space locations across the city — wooden benches wrapped by climbing plants plus young trees planted for future shade. The sites were selected using heat-maps and community input. Over time, these islands are expected to reduce surface and air temperatures locally and provide immediate refuge from the sun.
• Green pergolas for kindergartens (Maribor, SI): In two kindergartens, wooden pergolas were erected and covered with two species of plants (kiwi and White Isabella vine), to shade play- and rest-areas outdoors, and protect south-facing facades from overheating. This solution is low-cost, locally sourced, and doubles as a living classroom for children about plants, biodiversity and climate.
• Solar-powered cooling in elderly care facility (Weiz, AT): A more technical pilot — a solar-assisted cooling system was installed in the dining hall of a senior home. Under monitoring, the team is collecting energy consumption and efficiency data to compare against conventional cooling approaches (e.g. standard air-conditioning, district cooling). If efficient, this model could be scaled to other buildings.
• Community & stakeholder network for heat resilience (Worms, DE): Recognising that heat is not only a technical but a social and governance challenge, Worms initiated a pilot to build long-term stakeholder networks — connecting social services, urban planning, health departments, civil society and citizens. The objective: to coordinate heat protection, especially for isolated or vulnerable groups.