na-adjective, noun which may take the genitive case particle 'no', noun
unseasonable; out-of-season
Describes weather, products, events, or clothing that do not match the current season. Often used with の or な to modify nouns.
今日は季節外れの暖かさだ。
Today's warmth is unseasonable.
この店では季節外れの果物を
This shop sells out-of-season fruit.