Abstract: Rainfall variability over space and time must be regarded as the most significant aspect of the monsoon climate over Sri Lanka. The main objective of this study was to identify the spatial distribution of annual and seasonal rainfall in Kandy District (2005-2014) and long term annual and seasonal rainfall trends in Kandy (1875-2014). The monthly rainfall data have been collected from 19 rainfall stations in Kandy District. The data was obtained from the Department of Meteorology and other relevant institutions. Spatial interpolation was applied to prepare the isohyet maps for Kandy District using Radial Basis Functions Method in ArcGIS 10.4.