This study has investigated the thermal conductivity of sandy soil at a site in Usmanu Danfodiyo University Sokoto, Nigeria (13.10o N,5.23oE). The results are based on soil
temperature, Surface temperature, insolation data collected from the meteorological
Department of Sokoto Energy Research Center (SERC) between the months of March to June
2008 by sensor installed by the center for Basic Space Science (CBSS) . The soil
thermometer was buried at 5cm depth in the ground which measured the soil temperature.
The mean value of the soil thermal conductivity is 1.32 +_0.06WM-2k-1.The calculation of
thermal conductivity assumed that the energy radiated from the surface of the earth is equal
to that conducted from the soil. It was also observed that the soil thermal conductivity
decreases as the temperature gradient is increasing.