Grimbergen Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grimbergen.
Climate overview of Grimbergen
Grimbergen, Flemish Brabant, Belgium, sees big temperature differences between seasons, with July peaking at 24°C (75°F) and January dropping to 7°C (45°F).
The city receives around 810 mm (32 in) of rain/snowfall per year. It experiences warm summers and cold winters. August is the wettest month and April the driest. Sunshine peaks in July, when the city sees around 6.8 hours of sunshine per day.
Grimbergen Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grimbergen - and find the best time to visit.
Monthly Temperature in Grimbergen
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
Rainfall in Grimbergen
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
Sunshine Hours in Grimbergen
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
Humidity in Grimbergen by Month
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
Wind Speed in Grimbergen
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)
Best Time to Visit Grimbergen
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: May, June, July and August
- Seasonal pattern: Warm summers and cold winters
Frequently asked questions about the climate in Grimbergen
What is the best time to visit Grimbergen?
June, July, August and September typically offer the most optimal weather in Grimbergen. In contrast, January, February and December tend to have less optimal conditions. Grimbergen has warm summers and cold winters.
What temperatures can I expect in Grimbergen?
Daytime highs range from 7°C (45°F) in January to 24°C (75°F) in July. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Grimbergen get?
Annual rainfall is around 810 mm (32 in). August is the wettest month with 79 mm (3.1 in), while April is the driest with 54 mm (2.1 in).
How sunny is Grimbergen?
Grimbergen receives around 1,563 hours of sunshine per year. July is the sunniest month with 205 hours, while December is the cloudiest with just 45 hours.
Grimbergen 3-Day Forecast
Grimbergen on the map
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