Bawku's climate is characterized by a distinct dry and wet season pattern. The dry season, which typically runs from December to February, brings warm temperatures ranging from 25°C to 32°C, with an average of around 28-29°C. March marks the beginning of the transition period, with temperatures gradually increasing to an average high of 30°C. As April and May arrive, the wet season begins in earnest, bringing significant rainfall and cooler temperatures that range from 22°C to 26°C. The warmest months are June to August, when temperatures hover around 25-28°C, while the coolest period is from September to November, with average highs of 23-25°C.