Anderson Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Anderson, Tortola, UK Virgin Islands. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's break down all the details for a clearer picture.
On average, Anderson receives a reasonable amount of rainfall, with an annual precipitation of 984 mm (39 in). Despite this overall moderate level, the city experiences distinct dry season during certain months throughout the year, as illustrated in the precipitation charts below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
The climate in Anderson shows significant variation throughout the year. Expect 142 mm (5.6 in) of precipitation during the wettest month September, distributed over 19 rainy days.
In contrast, March offers drier and sunnier days, with around 33 mm (1.3 in) of rainfall over 14 rainy days.
September, the wettest month, has a maximum daytime temperature of 30°C (86°F). During the driest month March you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Anderson Temperature page.
Daily Historical Precipitation
45-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Explore Anderson's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Anderson spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in UK Virgin Islands: City Comparison
The map below shows the annual precipitation across UK Virgin Islands. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Anderson vs World: Rainfall Compared
Anderson's average annual precipitation is 984 mm (39 in). Let's compare this to some popular worldwide tourist destinations:
New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
In Brisbane, Australia, the annual precipitation is 979 mm (39 in), making it wetter than Sydney.
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.
- 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 Anderson's weather, including sunshine hours, humidity levels, and temperature data, visit our Anderson Climate page.
