Altitude; 68 m (223 ft). The average temperature in Ghana is 26.5 °C (80 °F). The range of average monthly temperatures is 4 °C. The warmest average max/ high temperature is 32 °C (90 °F) in January, February, March & April. The ... 5 sunlight hours for each day. On balance there are 0 days annually with measurable frost and in January there are on average 0 days with frost.