Complex sentence: Nagano has a humid subtropical climate (Köppen climate classification "Cfa"), bordering on humid continental (Köppen "Dfa"); its location in a sheltered inland valley means it receives less precipitation than any part of Japan except Hokkaidō.
Split into simpler sentences: Nagano has a humid subtropical climate (Köppen climate classification "Cfa"). Its location in a sheltered inland valley means it receives less precipitation than any part of Japan except Hokkaidō.