It's not the right season anymore, but I finally bought a shaved ice machine
It's not the right season anymore, but-
季節外れだけど-
not in seasonも通じると思いますが、果物や野菜についてよく使う表現なので私ならnot the right seasonやnot seasonally appropriateと言う表現を使います。
I finally bought a shaved ice machine.
とうとうかき氷器買った。
ご参考になれば幸いです。