The climate of Ghana is tropical and there are two main seasons: the wet and the dry seasons.North Ghana experiences its rainy season from March to November while South Ghana experiences its rainy season from April to mid-November.
The tropical climate of Ghana is relatively mild for its latitude. The harmattan, a dry desert wind, blows in north-east Ghana from December to March, lowering the humidity and causing hot days and cool nights in northern part of Ghana. Average temperatures range from 21°C to 28°C (70 to 82°F) with a relative humidity between 77 percent and 85 percent.
In the northern part of Ghana, there are two rainy seasons: April through June and September through November. Squalls occur in the northern part of Ghana during March and April, followed by occasional rain until August and September, when the rainfall reaches its peak. Rainfall ranges from 78 to 216 centimeters (31 to 85 inches) a year.