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Freshwater lakes are influenced by seasonal hydrology, local climatic conditions and anthropogenic inputs, which can alter their physicochemical quality over space and time. The present study assessed the spatio-temporal variability of selected water quality parameters in Wular Lake, North Kashmir, during 2024. Surface water samples were collected monthly from eleven locations representing different lake zones: Saderkot, Banwari, Nadihal, Zalwan, Ashtingoo, Kanibath, Watlab, Ningli, Garoora, Hathlangoo and Tulbagh. Observations were grouped into spring, summer, autumn and winter. The parameters examined included air and water temperature, pH, electrical conductivity, total dissolved solids, dissolved oxygen, chemical oxygen demand, biochemical oxygen demand, phosphate, ammoniacal nitrogen, total alkalinity and hardness. Data were analysed using descriptive statistics in Microsoft Excel 2019 and expressed as mean ± standard deviation. The results showed marked seasonal and spatial variation in water quality. Dissolved oxygen was comparatively higher during spring and winter, with the highest seasonal mean recorded in winter. Chemical oxygen demand and biochemical oxygen demand were higher during summer, indicating increased organic pollution pressure during warmer conditions. The lake water remained alkaline, with pH values ranging from 7.2 to 8.8. Total dissolved solids and hardness were higher during winter, whereas alkalinity increased during summer. Phosphate and ammoniacal nitrogen varied across locations, with higher values at selected inflow or relatively stagnant zones. The findings indicate the need for regular monitoring and location-specific management of Wular Lake water quality.