Alkmaar Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Alkmaar, Noord-Holland, Netherlands. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.
On average, Alkmaar receives a reasonable amount of rain/snowfall, with an annual precipitation of 917 mm (36 in).
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Alkmaar offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between October (98 mm (3.9 in)) and April (48 mm (1.9 in)) is not too significant, making the climate enjoyable for visitors and residents alike.
October, the wettest month, has a maximum daytime temperature of 15°C (59°F). The city receives 99 hours of sunshine in this period. During the driest month April you can expect a temperature of 13°C (55°F). For more detailed insights into the city's temperatures, visit our Alkmaar Temperature page.
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Explore Alkmaar's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Alkmaar spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in the Netherlands: City Comparison
The map below shows the annual precipitation across the Netherlands. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Alkmaar vs World: Rainfall Compared
Alkmaar's average annual precipitation is 917 mm (36 in). Let's compare this to some popular worldwide tourist destinations:
Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
Climate change is affecting precipitation patterns worldwide, including Alkmaar:
- Changing Rainfall Patterns: Global warming causes drastic changes in the patterns of rainfall. Some areas have been experiencing increased frequency and intensity of rainfall, while other areas experience longer dry spells or even droughts.
- Local Impacts: Many regions are experiencing heavier rainfall in the winter months and drier, hotter summers. This affects agriculture, water resources, and ecosystems.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Alkmaar's weather, including sunshine hours, humidity levels, and temperature data, visit our Alkmaar Climate page.
