Equivalent ionospheric current systems of the lunar daily geomagnetic variations at both high and mid-low latitudes during a solar active period are estimated from geomagnetic data for three seasons and the yearly average. Clear convective currents at high latitudes are found in addition to the well-known mid-low latitude current system. Field-aligned electric currents as well as the wind dynamo effects which produce the obtained electric current systems for the semidiurnal variation are examined. It is concluded that the wind dynamo plays a basic role in producing the current system at high latitudes, since lunar effects on the field-aligned current distribution are difficult to explain.