The present paper is the second of a series dedicated to the study of the magnetic activity in a selected sample of young solar analogues. The sample includes five single G0-G5V stars with ages between ~=130Myr and 700Myr: EK Dra, {pi}^1^ UMa, HN Peg, {kappa}^1^ Cet and BE Cet. In this study we also include the Pleiades-age (~=130Myr) K0V star DX Leo. Our analysis is based on high precision photometric observations carried out as part of "The Sun in Time" project, aimed at a multiwavelength study of stars with solar-like global properties, but with different ages and thus at different stages of evolution.