Mtoni Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Mtoni, Tanzania. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.
Mtoni experiences significant rainfall throughout the year, averaging 1092 mm (43 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))
Mtoni can be quite wet during April, receiving approximately 234 mm (9.2 in) of precipitation over 17 rainy days.
In contrast September, experiences much drier conditions, with 34 mm (1.3 in) of rainfall, spread across 7 rainy days.April, the wettest month, has a maximum daytime temperature of 30°C (86°F). During the driest month September you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Mtoni 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 May
Explore Mtoni's Historical Precipitation: 1976-2026
Browse day-by-day precipitation records for Mtoni 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
Mtoni vs World: Rainfall Compared
Mtoni's average annual precipitation is 1092 mm (43 in). Let's compare this to some popular worldwide tourist destinations:
In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.
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.
Climate change is affecting precipitation patterns worldwide, including Mtoni:
- 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.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Mtoni's weather, including sunshine hours, humidity levels, and temperature data, visit our Mtoni Climate page.
