Belfast Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Belfast. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Belfast experiences significant rainfall throughout the year, averaging 1303 mm of precipitation annually.

Monthly Precipitation Levels

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

The climate in Belfast shows significant variation throughout the year. Expect 191 mm of precipitation during the wettest month October, distributed over 16 rainy days.

In contrast, February offers drier and sunnier days, with around 52 mm of rainfall over 6 rainy days.

October, the city’s wettest month, has a maximum daytime temperature of 29°C and receives 226 hours of sunshine. During the driest month February you can expect a temperature of 27°C. For more detailed insights into the city’s temperatures, visit our Belfast Temperature page.

Annual Precipitation in Jamaica

The map below shows the annual precipitation across Jamaica. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Belfast’s average annual precipitation is 1303 mm. Let’s compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm of rainfall annually, with wet winters and dry summers typical of southern Spain.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

In Brisbane, Australia, the annual precipitation is 979 mm, making it wetter than Sydney.

Mumbai, India, experiences a tropical monsoon climate with 1860 mm of annual rainfall, with the majority of precipitation happening during the monsoon season from June to September.

How is Precipitation Measured?

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

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