seasonal
n. B1 Intermediate US //ˈsizənəɫ// UK //sˈiːzənəl// sea·son·al
n. happening only during a particular time of year or changing as the seasons change.
n. relating to, occurring in, or varying with a particular season. Often used to describe employment patterns, weather phenomena, or consumer availability.
The restaurant menu changes often to include seasonal vegetables.
Many students look for seasonal work at the beach during the busy summer months.
The local economy relies heavily on seasonal tourism, which creates a significant surge in revenue during the winter but leaves many businesses struggling during the off-season.
From season + -al.
Usage
Typically functions as an attributive adjective placed before the noun it modifies.