How does rainfall differ between coastal and inland Guinea-Bissau?

In Guinea-Bissau, rainfall patterns are significantly influenced by the country's geography. The coastal region receives between 60 and 120 inches (1,500 to 3,000 mm) of precipitation annually. In contrast, the interior of the country is characterized by a tropical savanna climate, which experiences greater variation in both temperature and precipitation compared to the coast. While elevation does not cause major variations in rainfall across the country, the distinction between these two regions remains a primary climatic feature.1