Falmouth Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Falmouth, Cornwall, United Kingdom. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's break down all the details for a clearer picture.

On average, Falmouth receives a reasonable amount of rainfall, with an annual precipitation of 893 mm (35 in).

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Year-round, Falmouth has a balanced climate with minimal variation in precipitation. The difference between the wettest month, December, with 93 mm (3.7 in), and the driest month, September, with 61 mm (2.4 in), is minimal.

December, the wettest month, has a maximum daytime temperature of 12°C (54°F). The city receives 65 hours of sunshine in this period. During the driest month September you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Falmouth Temperature page.

Falmouth's average annual precipitation is 893 mm (35 in). Let's compare this to some popular worldwide tourist destinations:

The city of Rome, Italy, has an average annual precipitation of 832 mm (33 in), spread fairly evenly throughout the year.

In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

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 Falmouth:

• 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.

• 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 Falmouth's weather, including sunshine hours, humidity levels, and temperature data, visit our Falmouth Climate page.