Heerlen Weather & Climate: Best Time to Visit
Heerlen, Limburg, Netherlands, experiences significant temperature variation throughout the year. Summers bring daytime highs of 24°C (75°F) in July, while winters cool to 7°C (45°F) in January.
Heerlen sees a moderate amount of rain/snowfall, totalling around 869 mm (34 in) per year. The most sunshine falls in July, with an average of 7.0 hours of daily sunshine.
Monthly Temperature in Heerlen
Depending on the time of the year, temperatures range from comfortable to chilly in Heerlen. Average maximum daytime temperatures range from a comfortable 24°C (75°F) in July, the warmest time of the year, to a chilly 7°C (45°F) during cooler months like January.
At night, you can expect temperatures ranging from 14°C (57°F) in July to around 1°C (34°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Heerlen
Generally, Heerlen has a moderate amount of precipitation, averaging 869 mm (34 in) of rain/snowfall annually. Year-round, Heerlen has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 85 mm (3.3 in), and the driest month, April, with 56 mm (2.2 in), is minimal. For more details, please visit our Heerlen 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 Heerlen
Seasonal changes in sunshine hours are quite dramatic in Heerlen. While July receives considerable daily sunshine with up to 7.0 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.8 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Heerlen by Month
The relative humidity is high throughout the year in Heerlen.
The city experiences its highest humidity in December, reaching 88%. In April, the humidity drops to its lowest level at 71%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Heerlen
The mean wind speed over the year ranges from 4 m/s (8 knots) in April, May, June, July, August, September and October to 5 m/s (10 knots) in January, February, March, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Heerlen 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Heerlen
During the months of May, June, July, August and September, Heerlen enjoys pleasant weather with average temperatures ranging from 19°C (67°F) to 24°C (75°F). These months are perfect for sightseeing and exploring.Rainfall during this time ranges from 65 mm (2.6 in) in May to 82 mm (3.2 in) in July. This means you can expect a mix of sunny days and occasional showers. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
