NOTE ON THE PLEISTOCENE COOLING IN PORTUGAL – Prevailing conditionsin the North Atlantic and Western Europe during the Maximum Cooling of the Last Glaciation can be deduced from the Climap Project (1976) results and from the Atlas of Paleoclimates and Paleoenvironments of the Northern Hemisphere (FRENZEL et al., 1992). Taking into account this framework of extreme climatic conditions and the nature of the glacial and periglacial relict phenomena in the Iberian Peninsula, an attempt is made to evaluate the degree of cooling in Portugal during the Gerês and Estrela glaciations. A drop of about 10º C in summer temperatures is suggested.