The present study reports the monitoring of physical characteristics of the shallow phreatic aquifer of the Vembanad Wetland System. The physical characteristics of the groundwater from the open dug well identified that the temperature, pH of the pre and post monsoon samples almost remain same throughout the seasons but the electric conductivity, total dissolved solids and salinity shows a significant difference between the seasons. Most of the groundwater is slightly acidic to slightly alkaline, fresh to brackish in nature.