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The present study employs mineral magnetic, geochemical, and textural parameters to elucidate the climate and sea level change signatures from Kolleru lake sediments representing the inter-deltaic part of the Krishna-Godavari sedimentary basin (KG basin). For this purpose, four cores were obtained which included significant peat. The conventional radiocarbon dating suggested that the peat formation took place during 9 ka-6 ka with an average sedimentation rate of 0.31 cm/y. Thermomagnetic analysis identifies titanomagnetite, magnetite and hematite as the dominant magnetic mineralogy of the KG basin sediments. The variation in magnetic mineralogy is related to paleoclimatic and paleoenvironmental processes; the transitions between (titano) magnetite and hematite coincide with peat layers of the cores as indicated by SIRM/chi (Saturation Isothermal Remanent Magnetization/Magnetic Susceptibility) and S-ratio defined by IRM-0.3T/SIRM values. The various mineral magnetic parameters, chi and S-ratio along with major elemental concentrations of Ti, Al, Fe and Zr show signatures of an arid event before 10 ka, between 9 ka-8 ka periods and during the last 5.5 ka. The overall climate of warm and humid type was inferred from 10 ka to 9 ka, which correlates with Early Holocene Optima and 6 ka to 5.5 ka of Middle Holocene. The presence of evaporite crystals in the lowermost part of the cores corroborated by mineral magnetic and geochemical proxies indicates sub-aerially weathered facies of the arid Late Pleistocene. Similarly, the peat layers rich in mangrove pollen indicate sea level changes between 10 ka and 6 ka. The sub-surface position of the Pleistocene weathered layer and the Holocene peat layer suggests tectonic subsidence of the area, which is situated over the basement graben, known as Gudiwada sub-basin. (C) 2015 Elsevier Ltd and INQUA. All rights reserved.