Brentwood Rainfall & Precipitation: Monthly Averages and Year-Round Insights
This page shows the average amount of rainfall per month in Brentwood. The numbers are calculated over a 30-year period to provide a reliable average. Let’s explore the details in depth to provide you with a complete overview.
Generally, Brentwood has a moderate amount of precipitation, averaging 684 mm of rain/snowfall annually.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm)
Year-round, Brentwood has a balanced climate with minimal variation in precipitation. The difference between the wettest month, August, with 66 mm, and the driest month, March, with 45 mm, is minimal.
August, the wettest month, has a maximum daytime temperature of 23°C. The city receives 205 hours of sunshine in this period. During the driest month March you can expect a temperature of 12°C. For more detailed insights into the city’s temperatures, visit our Brentwood Temperature page.
Annual Precipitation in the United Kingdom
The map below shows the annual precipitation across the United Kingdom. You can also select the different months in case you are interested in a specific month.





Amsterdam Precipitation Compared World Wide
Brentwood’s average annual precipitation is 684 mm. Let’s compare this to some popular worldwide tourist destinations:
New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.
Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.
Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.
Singapore, situated near the equator, gets 2581 mm of rainfall annually, with no distinct dry season and consistent monthly precipitation.
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.
Global Warming and Precipitation
Climate change is affecting precipitation patterns worldwide, including Brentwood:
- 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.
For more detailed information about Brentwood’s weather, including sunshine hours, humidity levels, and temperature data, visit our Brentwood Climate page.