There is provided a liquid jetting apparatus including: a liquid jetting head having a nozzle; a supply channel; a cap configured to cover the nozzle; a discharging section; a switching mechanism switching a state of the cap between a capping state and an uncapping state; and a controller. The controller is configured to perform: controlling the discharging section, based on both of a supply evaporation rate according to an evaporation rate of water content in the liquid inside the supply channel and a cap evaporation rate which is an evaporation rate of the water content in the liquid remaining in the cap, so as to cause the liquid to be discharged from the nozzle; and controlling the discharging section, based on one of the supply evaporation rate and the cap evaporation rate, to cause the liquid to be discharged from the nozzle.