Here is a list of the average rainfall in the UK by month, based on data from the UK Met Office:

  • January: 111 mm
  • February: 82 mm
  • March: 72 mm
  • April: 64 mm
  • May: 66 mm
  • June: 64 mm
  • July: 69 mm
  • August: 78 mm
  • September: 77 mm
  • October: 111 mm
  • November: 116 mm
  • December: 111 mm


Rainfall is an essential component of the climate, and it plays a vital role in shaping the natural environment and supporting ecosystems. The UK is a country that experiences a maritime climate, with rainfall occurring throughout the year. In this essay, we will discuss the average rainfall in the UK, factors that influence rainfall patterns, and the impacts of rainfall on the natural environment and human society.

Average Rainfall in the UK:

The UK is known for its rainy weather, and it receives an average of 885 mm of rainfall each year. However, the distribution of rainfall is not evenly spread throughout the country, and different regions of the UK receive varying amounts of rainfall.

The highest rainfall is typically received in the western regions of the UK, such as Wales and the western parts of Scotland and England. These areas receive an average of 2,500 mm of rainfall each year. In contrast, the eastern regions of the UK, such as East Anglia, receive much less rainfall, with an average of 600 mm per year.

The average monthly rainfall in the UK also varies throughout the year. The wettest months are usually October and November, with an average of 111 mm and 116 mm of rainfall respectively. The driest month is typically February, with an average of 82 mm of rainfall.

Factors that Influence Rainfall Patterns:

Several factors can influence rainfall patterns in the UK. The most significant of these factors include atmospheric circulation patterns, topography, and human activities.

Atmospheric Circulation Patterns:

The UK’s location on the edge of the Atlantic Ocean makes it susceptible to the effects of atmospheric circulation patterns. The UK is affected by the North Atlantic Oscillation (NAO), which can cause changes in the strength and position of the jet stream. These changes can lead to changes in the amount and distribution of rainfall across the UK.


The topography of the UK also plays a significant role in rainfall patterns. Areas with high elevation, such as the Scottish Highlands, tend to receive more rainfall than low-lying areas. This is because as air rises over mountains, it cools and releases moisture in the form of precipitation.

Human Activities:

Human activities can also influence rainfall patterns in the UK. Land-use changes, such as deforestation and urbanization, can alter the amount of moisture that is returned to the atmosphere through evapotranspiration. This can lead to changes in the amount and distribution of rainfall in affected areas.

Impacts of Rainfall on the Natural Environment:

Rainfall is essential for supporting the natural environment in the UK. It provides moisture for plants and helps to maintain healthy ecosystems. However, extreme rainfall events can also have negative impacts on the environment.

Heavy rainfall can lead to soil erosion, which can result in the loss of valuable topsoil and nutrients. It can also lead to the loss of vegetation and habitats for wildlife. Additionally, heavy rainfall can cause flooding, which can damage property and infrastructure and pose a threat to human safety.

Impacts of Rainfall on Human Society:

Rainfall also has significant impacts on human society in the UK. It plays a crucial role in agriculture, providing the necessary moisture for crops to grow. However, excessive rainfall can lead to crop damage and loss of yield.

Rainfall also has a significant impact on water resources. It provides the water necessary for human consumption, industry, and agriculture. However, changes in rainfall patterns can lead to changes in the availability and quality of water resources.

Finally, heavy rainfall events can lead to flooding, which can result in significant damage to property and infrastructure. Floods can also pose a threat to human safety, and in extreme cases, can result in loss of life.