Antonyms of adj unseasonable

2 senses of unseasonable

Sense 1
unseasonable (vs. seasonable) -- (not in keeping with (and usually undesirable for) the season; "a sudden unseasonable blizzard"; "unseasonable bright blue weather in November")

seasonable (vs. unseasonable) -- (in keeping with the season; "a hard but seasonable frost"; "seasonable clothes")

Sense 2
ill-timed, unseasonable, untimely, wrong -- (badly timed; "an ill-timed intervention"; "you think my intrusion unseasonable"; "an untimely remark"; "it was the wrong moment for a joke")

INDIRECT (VIA inopportune) -> opportune -- (suitable or at a time that is suitable or advantageous especially for a particular purpose; "an opportune place to make camp"; "an opportune arrival")

Similarity of adj unseasonable

2 senses of unseasonable

Sense 1
unseasonable (vs. seasonable) -- (not in keeping with (and usually undesirable for) the season; "a sudden unseasonable blizzard"; "unseasonable bright blue weather in November")

Sense 2
ill-timed, unseasonable, untimely, wrong -- (badly timed; "an ill-timed intervention"; "you think my intrusion unseasonable"; "an untimely remark"; "it was the wrong moment for a joke")
       => inopportune (vs. opportune) -- (not opportune; "arrived at a most inopportune hour"; "an inopportune visit")