Complex sentence: Canberra has a relatively dry continental climate with warm to hot summers and cool to cold winters, under Köppen-Geiger classification it has an oceanic climate (Cfb).
Split into simpler sentences: Canberra has a relatively dry oceanic climate (Cfb in the Koeppen climate classification). It has warm to hot summers and cool to cold winters, under Köppen-Geiger classification it has an oceanic climate (Cfb).