I come from Germany Cologne! But good weather isn“t in Germany (Frankfurt)! And Frankfurt is very expensive... (Hotels, Eating...&&&) and Ryanair is cheap but Frankfurt Airport is very far from the City!
Better City is:
Barcelona 
(Cheap Flying - Ryanair / good Hotels & Hostels / good weather / Beach.. &&&
Italy (good weather)
Warsaw-Poland (a lot of Freestyler)