IPA: /ˈsiːzənəbli/
KK: /ˈsiːzənəbli/
In a way that is suitable or appropriate for a particular season or time.
The flowers bloom seasonably, bringing color to the garden in spring.
Seasonably → It is formed from "season" (from Old French *saison*, meaning a time or period) and "-ably" (meaning in a manner). The word "seasonably" means in a manner appropriate to a particular season or time.
Think of the word 'season' which refers to a specific time of year, and remember that 'seasonably' means acting in a way that fits that time.