Grimbergen Weather & Climate: Best Time to Visit

Visitors to Grimbergen can expect significant temperature changes throughout the year. On average, daytime temperatures range from a comfortable 24°C (75°F) in July to a chilly 7°C (45°F) in January.

Nighttime temperatures range from 14°C (57°F) in July to 2°C (36°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Generally, Grimbergen experiences moderate precipitation patterns, averaging 810 mm (32 in) yearly. The wettest period in Grimbergen occurs in August, which receives around 79 mm (3.1 in) of precipitation. During the driest month, April, Grimbergen experiences moderate rainfall, totaling 54 mm (2.1 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Grimbergen Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

In Grimbergen, summer days are longer and more sunny, with daily sunshine hours peaking at 6.8 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 1.5 hours per average day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Grimbergen.

The city experiences its highest humidity in December, reaching 86%. In April, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

The average wind speed over the year ranges from 3 m/s (6 knots) to 4 m/s (8 knots). It is lower in April, May, June, July, August, September, October and November and higher in January, February, March and December. What does this mean?

The mean monthly wind speed over the year (meters per second)