September 2023 will go down in history as the warmest September since records began here in Belgium in 1833. Average temperatures last month were higher than in an average July or August. There was even a heatwave. The first week of October will see a continuation of the “Indian summer” with higher than average temperatures forecast for the rest of the week.
At the beginning of September it became clear that the first month of this year's meteorological autumn would be exceptional as it began with a heat wave.
There was no significant fall in temperatures during the rest of the month and above average temperatures were recorded almost every day during September. The nights also remained warmer than average with an average minimum temperature of 14.1°C.
This week’s forecast
Monday will be warm and sunny. Temperatures will reach 21°C in the Ardennes, 24°C at the coast and 25°C in central areas. On Monday night temperatures will fall to between 10°C and 15°C.
On Tuesday there will be increased cloud and a front bringing rain will sweep across the country. Temperatures will reach 16°C in the Ardennes and 21°C elsewhere in the country. Winds could reach speeds of up to 60km/h.
On Thursday and Friday sun will be interspersed with cloud. There could be the occasional shower. Temperatures won’t exceed 18°C.
On Saturday and Sunday there will be more sun with temperatures reaching around 20°C.