Introduction.- Initial research of climate change in Poland.- Data and methods of investigations.- Homogeneity of climate series.- Climate change before instrumental measurements.- Change of atmospheric circulation.- Air pressure change.- Solar radiation change.- Change of sunshine.- Change of cloudiness.- Air temperature change.- Air humidity change.- Precipitation change.- Snow cover change.- Change of wind.- Change of selected meteorological phenomena.- Change of bioclimatic indices.- Change of weather types.- Projections of temperature changes in Poland.- Projections of precipitation changes in Poland.- Projected changes in thermal indices related to the agriculture and energy sectors.- Climate change in Poland – summary, discussion and conclusion.