June the hottest June in history
This heat wave is part of a broader dynamic. The month of June 2025 ranked second month in the hottest June ever recorded, with an average temperature of 19.3 ° C, equally with June 1976. Only June 2023 had done better (or worse?), With 20.25 ° C. “”We tend to get used to these heat, but what we live exceptional from a statistical point of view“, insists Pascal MORMAL.
“It is a very clear indicator of global warming”
Since 2015, Belgium has thus experienced 13 waves of heat, at least one summer. “”For comparison, between 1890 and 1980, the average was a wave every four years. It is a very clear indicator of global warming“Says the meteorologist.
He also recalls that 1947 remains the record year, with four waves of heat in total. But more recent episodes, such as 2019 with three waves, or 2025, which could know several, illustrate a frequency sharply. “”The episodes of extreme heat which, formerly, occurred every 30 or 50 years, are now repeated every two or three years.“
The weather fell on Belgium: several highly affected municipalities (photos + videos)
A brief break before a new peak?
Good news all the same: this heat wave ends this Thursday. A cooler air mass of Atlantic origin will temporarily settle on our country, and temperatures will descend around 24 ° C in the center of the country.
But this refreshment will only be temporary. Some models already announce a new heat thrust around July 13-14, with temperatures again above 30 ° C. “”We do not yet have the certainty of attending a new heat wave, but the signals are there. We will have to monitor the evolution of forecasts in the coming days“warns Pascal Mormal.
He also insists on the precocity of this episode. “”Such temperatures are generally observed at the end of July or early August, not at the very beginning of the month. This early character reinforces the feeling of a summer 2025 which will be long.“
