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Problem statement: Due to the climatic variation for the year and it's sever harmattan&#13; during the month of December to March with the high keraunic level (80-90) in the areas, it was&#13; necessary to know the seasonal variation of soil resistivity. The seasonal variation and the nature of&#13; soil have considerable influence on electrical characteristics and therefore affect the earthling system&#13; performance. Approach: Eighteen sites were chosen from three main soil divisions. The soil&#13; resistivity was taken in each of the site at depths of 0.5, 0.8 and 1.2 m using the four point test&#13; instrument (Wenner Method). From the selected sites in the three soil divisions the temperature was&#13; also taken at depths of 0.2, 0.5, 0.8 and 1.0 m. Results: The coefficient of seasonal variation at the&#13; depth of 0.5 m was high and reduced drastically at a depth of 1.2 m. The soil temperature was higher&#13; than the ambient temperature at the depth of 0.2 m during the months of December to March. From 0.8&#13; m depth and below the temperature reduced even during the dry seasons. Conclusion: The coefficient&#13; of seasonal variation of soil at the depth of 0.8 and 1.2 m was small (1.8-3.0) throughout the year in all&#13; soil types. That indicates the high water level and or the permanent moisture table which gives an&#13; advantage to low soil resistivity for buried conductors and electrodes in the area

Seasonal Variation of Soil Resistivity and Soil Temperature in Bayelsa State