Swanmore Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Swanmore, Hampshire, United Kingdom. This average is based on long-term data collected between 1990 and 2020. Now, let's explore all the details to give you a full picture.

Generally, Swanmore experiences moderate precipitation patterns, averaging 816 mm (32 in) yearly.

Monthly Precipitation Levels

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

Despite minor fluctuations, Swanmore enjoys fairly consistent precipitation throughout the year. In October, you can expect around 82 mm (3.2 in) of precipitation, while in March, Swanmore receives about 54 mm (2.1 in).

October, the wettest month, has a maximum daytime temperature of 16°C (61°F). The city receives 113 hours of sunshine in this period. During the driest month March you can expect a temperature of 12°C (54°F). For more detailed insights into the city's temperatures, visit our Swanmore Temperature page.

Swanmore's average annual precipitation is 816 mm (32 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.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

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

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.

Climate change is affecting precipitation patterns worldwide, including Swanmore:

• 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.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

For more detailed information about Swanmore's weather, including sunshine hours, humidity levels, and temperature data, visit our Swanmore Climate page.