Dar es Salaam Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Dar es Salaam. 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.

Dar es Salaam has a notably wet climate with abundant precipitation, recording 1112 mm of rainfall per year.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

Dar es Salaam can be quite wet during April, receiving approximately 230 mm of precipitation over 17 rainy days.

In contrast July, experiences much drier conditions, with 32 mm of rainfall, spread across 6 rainy days.

April, the city’s wettest month, has a maximum daytime temperature of 30°C. During the driest month July you can expect a temperature of 29°C. For more detailed insights into the city’s temperatures, visit our Dar es Salaam Temperature page.

Annual Precipitation in Tanzania

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.

Amsterdam Precipitation Compared World Wide

Dar es Salaam’s average annual precipitation is 1112 mm. Let’s compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm, characterized by wet winters and dry summers typical of the Mediterranean climate.

Beijing, China, receives 560 mm of annual precipitation, concentrated in the summer months.

In Brisbane, Australia, the annual precipitation is 979 mm, making it wetter than Sydney.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
• Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

For more detailed information about Dar es Salaam’s weather, including sunshine hours, humidity levels, and temperature data, visit our Dar es Salaam Climate page.