In Hungary, the Great Plain and the western part of Transdanubia had different geomorphological and climatic characteristics during the Late Glacial, the Holocene and the present day. As a result, the vegetation in the two areas was also different, as indicated by palynological data. In Late Glacial times the Great Plain had an extremely continental climate whereas the western part of Transdanubia had a somewhat milder one. This clear distinction can be made on the basis of pollen spectra between the palaeo-vegetation of Transdanubia and that of the Great Plain.A comparison of the pollen data, and the climatic changes indicated by the carbonate content, and δ18OPDB and δ13CPDB isotope ratios of the sediments of Lake Balaton, have shown that these data can be correlated beginning from the Bölling, the onset of permanent water coverage.