The apparent soil electrical conductivity (EC a) was continuously recorded in three successive dates using electromagnetic induction in horizontal (EC a-H) and vertical (EC a-V) dipole modes at a 6 ha plot located in Northwestern Spain. One of the EC a data sets was used to devise an optimized sampling scheme consisting of 40 points. Soil was sampled at the 0.0–0.3 m depth, in these 40 points, and analyzed for sand, silt, and clay content; gravimetric water content; and electrical conductivity of saturated soil paste. Coefficients of correlation between EC a and gravimetric soil water content (0.685 for EC a-V and 0.649 for EC a-H) were higher than those between EC a and clay content (ranging from 0.197 to 0.495, when different EC a recording dates were taken into account). Ordinary and universal kriging have been used to assess the patterns of spatial variability of the EC a data sets recorded at successive dates and the analyzed soil properties. Ordinary and universal cokriging methods have improved the estimation of gravimetric soil water content using the data of EC a as secondary variable with respect to the use of ordinary kriging.