Thursday starts out grey with rain, especially in the northwest of the country, but by the afternoon conditions will improve, and it will be exceptionally mild for the time of year.
So far, the weather this week has been mixed, with sunshine on Tuesday and heavy rain on Wednesday. Thursday will be much of the same but temperatures will become considerably warmer. A disturbance is passing over Belgium on Thursday morning, linked to a low-pressure core west of Ireland, the Royal Meteorological Institute (RMI) said.
"Behind this disturbance, we enter a broad warm sector in which very mild subtropical air is brought in with a southerly flow," it wrote. With a southerly airflow, it will be "exceptionally mild" with maximum temperatures ranging from 12°C in the High Fens in the Ardennes to 16°C in Flanders. "Locally, 17°C is not out of the question" in Flanders or Brussels.
It will become dry for the most part and the sun will sometimes shine through the clouds. However, the warmer weather won't last for long. On Friday, the low-pressure core moves towards the Norwegian coast, and a cold front will reach the country. "It will then also become a little cooler again."
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Friday will be overcast with periods of rain or showers from the west, but again, by the afternoon, it will become mostly dry in the west and centre, but it will remain cloudy over most of Belgium. The RMI did note that it remains mild for the time of year with maximum temperatures of 11 to 14°C.
Saturday will be cloudy and bar some showers, it will remain dry in most places. Especially in the afternoon, the sun may sometimes come out. Temperatures will hover around 11°C in Flanders and Brussels and 9°C in Luxembourg.
An active rain zone will then pass through Belgium from west to east on Sunday, while temperatures will drop to between 9 and 10°C.
