Opportune; occurring at an appropriate or suitable time.Thomas Salusbury (1662):Nor is it seasonable to have to do with Hercules, whil'st he is enraged, and amongst the Furies.
Appropriate to the current season of the year.The temperature outside was quite seaonable, neither warmer nor colder than I had expected.
1886, Robert Louis Stevenson, Strange Case Of Dr Jekyll And Mr HydeIt was a wild, cold, seasonable night of March, with a pale moon, lying on her back as though the wind had tilted her, and flying wrack of the most diaphanous and lawny texture.
(obsolete) Ephemeral; lasting for just one season.
(obsolete) In season (said of game when it is legal to be hunted and killed).
