Average monthly wind speed in Grimbergen

The mean monthly wind speed over the year in Grimbergen (Flemish Brabant), Belgium.

These figures come from monthly climatological averages showing that Grimbergen sees peak wind speeds of 4 m/s (8 knots) during its windiest period and minimum speeds of 3 m/s (6 knots) during its calmest season.

The 3 m/s (6 knots) average wind speed in April, May, June, July, August, September, October and November brings moderate air movement. Conditions can vary throughout the month, with some days experiencing stronger winds and others remaining calm. At this average speed, leaves and small branches move steadily, and flags show continuous motion. This equates to about 11 kilometers per hour or 6.7 miles per hour.

The windiest time of year, January, February, March and December has average wind speeds of 4 m/s (8 knots). This means typical days have strong breezes that make flags snap and clothing flap. Walking against the wind takes slight effort. The speed translates to 14.4 kilometers per hour or 8.9 miles per hour. While some periods are calmer or gustier, windy weather is the norm.

For more detailed information about Grimbergen’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Grimbergen climate page.