Explanation of the problem

During a heatwave, the mortality rate in the Netherlands can increase, particularly among the elderly. In the 2018 heatwave, approximately 100 more people died in the Netherlands than in an average summer week, and during the 2006 heatwave period, there were almost 400 more deaths than in an average summer week.

Average figures over several years show that during a heatwave, the mortality rate in the Netherlands increases by 12 percent. This translates to about 40 additional deaths per day compared to a period with lower temperatures. The question, of course, is whether this will remain the same in the future. It is possible that if temperatures during heatwaves become consistently higher, more people will die. However, it’s also possible that we will be better adapted, leading to fewer deaths at the same high temperatures.

Municipalities with a high number of independently living elderly and healthcare institutions are entities that can take measures to prevent excess mortality due to heat.

Information and maps for better understanding

Basic maps according to the standardized stress test

  • Map showing the number of warm nights per year (Climate Impact Atlas) → provides insight into the number of warm nights in built-up areas, now and in the future. Mortality increases as the temperature rises.

Additional maps

Some measures and guidelines

  • Measures that can reduce heat-related mortality are the same as those that can prevent health problems (see measures for health problems)