Meuse, Kempen and Haspengouw
Limburg in north-eastern Flanders combines three landscapes: the Kempen with pine woods and heath in the north, the Meuse country on the Dutch frontier, and Haspengouw with its orchards in the south. Hasselt in the centre stands at 40 metres, Tongeren in the south at 80, Voeren in the far south-east at 128. Weather follows this division, and it matters whether you are on river, sand or loess.
Compared with the coast, Limburg is more continental. Hasselt has a January night-time low of 1.1 degrees and a July high of 22.9; Tongeren stays a little cooler at 22.5. Winters are colder than in the west, summers warmer, and the swing between day and night is wider because the sea is no longer there to cushion it.
The Kempen: heath, pools and collieries
In the north and centre lie Lommel with its sand desert, Pelt and Maaseik. On sandy ground the air cools rapidly at night, ground frost occurs into May, and in high summer the same land heats faster than the clay fields in the south. Rainfall, at about 735 millimetres in Maaseik on 142 days, is modest and below the coastal figures.
South of there stretches the old mining district around Genk, Beringen and Heusden-Zolder. Spoil heaps and pit buildings have partly become parks and museums. Genk gets 784 millimetres a year and a July mean of 23.0 degrees. The Zolder circuit, at 39 metres, draws motor-sport fans in summer, and the weather there decides tyre choice and timetable.
Bokrijk and the Meuse country
The open-air museum Bokrijk near Genk stands at 58 metres and is a good example of an outing that depends heavily on the weather. The half-timbered houses and meadows shine on a clear autumn day, and in showers the interiors fill up. In the Meuse valley near Maasmechelen and Lanaken the river sends night mist out of the floodplain, and mornings often start under a white blanket.
The Meuse forms the border with the Netherlands, and its levels matter to residents. After rain in the Ardennes catchment the flood wave reaches Limburg later, so the river can rise while local skies are sunny. Waterinfo, the Flemish authority, reports the situation. Maasmechelen receives 742 millimetres a year and ranks among the drier places in Flanders.
Haspengouw: blossom and late frost
In the south lies Haspengouw with its cherry and apple orchards, centred on Sint-Truiden. The loess soils are exceptionally fertile, but fruit growers dread spring when blossom starts: one clear frosty night in April can cut the harvest. April is the driest month in Hasselt at roughly 48 millimetres, which helps; frost-protection sprinklers and wind machines are still a common sight.
Pollen is a topic here too: fruit trees, birch and later grasses burden allergy sufferers. Our guide Pollen in Flanders and Wallonia helps with the sorting. Voeren, the exclave in the south-east, is hillier and gets 850 millimetres a year, more than the rest of the province.
Planning and neighbours
For daily life in Limburg a look at the 14-day forecast for Hasselt is often enough, supplemented by the radar on the Belgium weather map. Icy roads occur mostly at night and in the early morning, and fog banks in the Meuse valley can sharply cut visibility.
Antwerp adjoins to the west, Flemish Brabant and Liège to the south; the latter, with its heights, offers an entirely different weather type. Drive from Limburg to the south-east and you notice how fast temperatures change and rainfall grows. A closing word about summer: hot days are more frequent in Limburg than in the west of the country, and bathing lakes such as the gravel pits near Maasmechelen fill up quickly. Anyone heading for the water at the weekend should expect thunderstorms in the afternoon. Mist along the Meuse can be thick on summer mornings too, and it clears more slowly than over the open fields further from the river.
Sources and further reading
IRM-KMI: Royal Meteorological Institute of Belgium
Waterinfo: river levels and flood situation in Flanders