Zemst, in Flanders, Belgium, is home to roughly 21,100 people in the Europe/Brussels time zone at 51°N latitude.
In 2025, Zemst recorded an average annual temperature of 54°F. The hottest temperatures reached 97°F in July; the coolest were 24°F in January. Total precipitation for the year was 23 inches, with the wettest month being January. Snowfall for the year totaled approximately 3 inches.
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