Iserlohn Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Iserlohn, North Rhine-Westphalia, Germany. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.
Iserlohn experiences significant rain/snowfall throughout the year, averaging 1092 mm (43 in) of precipitation annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Despite minor fluctuations, Iserlohn enjoys fairly consistent precipitation throughout the year. In July, you can expect around 104 mm (4.1 in) of precipitation, while in April, Iserlohn receives about 70 mm (2.8 in).
July, the wettest month, has a maximum daytime temperature of 24°C (75°F). The city receives 223 hours of sunshine in this period. During the driest month April you can expect a temperature of 15°C (59°F). For more detailed insights into the city's temperatures, visit our Iserlohn Temperature page.
Annual Rainfall in Germany: City Comparison
The map below shows the annual precipitation across Germany. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
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Iserlohn vs World: Rainfall Compared
Iserlohn's average annual precipitation is 1092 mm (43 in). Let's compare this to some popular worldwide tourist destinations:
Boston, USA, experiences 1238 mm (49 in) of annual precipitation, including significant snowfall during the winter.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
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.
The proximity of a location to a large body of water can significantly affect its rainfall patterns:
- Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
- Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.
- The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
- Approximately 70% of lightning bolts strike land rather than oceans.
- A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.
For more detailed information about Iserlohn's weather, including sunshine hours, humidity levels, and temperature data, visit our Iserlohn Climate page.
