Mwanza Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Mwanza, Tanzania. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's explore the details to provide you with a complete overview.
Mwanza has a notably wet climate with abundant precipitation, recording 1725 mm (68 in) of rainfall per year. It does, however, have a distinct dry and rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Mwanza can be quite wet during November, receiving approximately 271 mm (11 in) of precipitation over 15 rainy days.
In contrast July, experiences much drier conditions, with 13 mm (0.5 in) of rainfall, spread across 5 rainy days.
November, the wettest month, has a maximum daytime temperature of 26°C (79°F). The city receives 210 hours of sunshine in this period. During the driest month July you can expect a temperature of 27°C (81°F). For more detailed insights into the city's temperatures, visit our Mwanza Temperature page.
Daily Historical Precipitation
31-year average (1985-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Explore Mwanza's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Mwanza spanning 51 years. Select any month and year to see actual rainfall and snowfall recorded on each day.
Annual Rainfall in Tanzania: City Comparison
The map below shows the annual precipitation across Tanzania. You can also select the different months in case you are interested in a specific month.
heavy rainfall
high
moderate
low
almost none
Mwanza vs World: Rainfall Compared
Mwanza's average annual precipitation is 1725 mm (68 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.
Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.
In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.
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.
- "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 Mwanza's weather, including sunshine hours, humidity levels, and temperature data, visit our Mwanza Climate page.
