Benner Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Benner, Saint Thomas, US Virgin Islands. These averages rely on historical data collected over 30 years, from 1990 to 2020. Now, let's explore all the details to give you a full picture.
Benner experiences significant rainfall throughout the year, averaging 1001 mm (39 in) of precipitation annually. However, this abundant rainfall is not evenly distributed, with a distinct dry season during certain months. You can clearly see this in our monthly precipitation graphs below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, September receives substantial rainfall, averaging 147 mm (5.8 in) of precipitation, recorded across 18 rainy days.
In contrast, the driest month, March brings less rainfall, with 33 mm (1.3 in) 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 Benner Temperature page.
Daily Historical Precipitation
48-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Explore Benner's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Benner spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in US Virgin Islands: City Comparison
The map below shows the annual precipitation across US 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
Benner vs World: Rainfall Compared
Benner's average annual precipitation is 1001 mm (39 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.
Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.
Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.
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.
Precipitation has a very strong role in determining the local climate and ecosystem:
- 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.
- "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
- The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
- The greatest snowfall recorded was on Mt. Rainier, Washington State, USA—over 31.5 meters (103 feet) fell during the winter of 1972.
For more detailed information about Benner's weather, including sunshine hours, humidity levels, and temperature data, visit our Benner Climate page.
