Last week, we experienced a major heat wave, a foretaste of what awaits us in the future?


The number of heat waves, their duration and intensity have increased since the 1970s, from an average of one heat wave per three years to one heat wave per year.




Number of heat waves per year (Uccle, 1901-2017) source: MIRA based on IRM-KMI (

Each decade has two new summer days (Tmax ≥ 25 °C). And every two decades there is also an extra heat wave day (Tmax ≥ 30 °C).

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