Kumasi Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Kumasi. The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Kumasi has a relatively rainy climate with high precipitation levels, averaging 1136 mm of rainfall annually.

Monthly Precipitation Levels

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

Kumasi can be quite wet during September, receiving approximately 152 mm of precipitation over 23 rainy days.

In contrast January, experiences much drier conditions, with 22 mm of rainfall, spread across 5 rainy days.

September, the city’s wettest month, has a maximum daytime temperature of 30°C and receives 109 hours of sunshine. During the driest month January you can expect a temperature of 34°C. For more detailed insights into the city’s temperatures, visit our Kumasi Temperature page.

Annual Precipitation in Ghana

The map below shows the annual precipitation across Ghana. You can also select the different months in case you are interested in a specific month.

Amsterdam Precipitation Compared World Wide

Kumasi’s average annual precipitation is 1136 mm. Let’s compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm of rainfall annually, with precipitation evenly distributed throughout the year.

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

Melbourne, Australia, has 690 mm of rainfall annually, spread fairly evenly throughout the year.

Kuala Lumpur, Malaysia, receives 2529 mm of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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 Kumasi’s weather, including sunshine hours, humidity levels, and temperature data, visit our Kumasi Climate page.