1) In keeping with the season 1) Opportune 2) Timely 
• (a.) Occurring in good time, in due season, or in proper time for the purpose; suitable to the season; opportune; timely; as, a seasonable supply of rain.
Sea'son·a·ble adjective Occurring in good time, in due season, or in proper time for the purpose; suitable to the season; opportune; timely; as, a seasonable supply of rain. « Mercy is seasonable in the time of affliction.» Ecclus. xxxv. 20. -- 
[adj] - in keeping with the season
adjective in keeping with the season; `a hard but seasonable frost`; `seasonable clothes`