Utilizing a silicon solar cell with an average power conversion efficiency of similar to 10.23%, the global solar radiation at Okigwe, located at latitude 5 degrees 40＇ N and longitude 7 degrees 10＇ E, and with no known previous record of such data, was evaluated. Readings were taken hourly and daily for a period of four months, January-April, an important part of the dry season in Nigeria outside the harmattan period. It was observed that the insolation was generally high, reaching up to a monthly mean hourly value of similar to 1011.85 W m(-2) and has a daily time duration of similar to 12 h with similar to 8 h of noontime sunlight. The diurnal variation was found to be slight within the months. The monthly mean variation was also found to be slight, varying from 10.22 kW m(-2) in January to 9.99 kW m(-2) in April.