A refrigeration cycle apparatus, comprising: a refrigerant circuit that is formed by connecting a compressor, a flow passage switching device, an outdoor heat exchanger, an expansion unit, and an indoor heat exchanger via pipes, and through which refrigerant flows; an outdoor air-sending device configured to blow outdoor air to the outdoor heat exchanger; an outdoor air temperature detector configured to detect a temperature of the outdoor air; a controller configured to control an operation of the outdoor air-sending device, and a liquid pipe temperature detector configured to detect a liquid pipe temperature of refrigerant flowing in the outdoor heat exchanger, the controller including: a dew-point temperature prediction unit configured to predict a dew-point temperature to be observed after elapse of a preset time, based on an outdoor air temperature detected by the outdoor air temperature detector; an evaporating temperature prediction unit configured to predict an evaporating temperature to be observed after elapse of a preset time of the refrigerant flowing in the outdoor heat exchanger during a heating operation; and an air-sending control unit configured to change a rotation speed of the outdoor air-sending device in such a manner that the evaporating temperature predicted by the evaporating temperature prediction unit exceeds the dew-point temperature predicted by the dew-point temperature prediction unit, wherein the evaporating temperature prediction unit is configured to predict the evaporating temperature based on the liquid pipe temperature detected by the liquid pipe temperature detector. a refrigerant circuit that is formed by connecting a compressor, a flow passage switching device, an outdoor heat exchanger, an expansion unit, and an indoor heat exchanger via pipes, and through which refrigerant flows; an outdoor air-sending device configured to blow outdoor air to the outdoor heat exchanger; an outdoor air temperature detector configured to detect a temperature of the outdoor air; a controller configured to control an operation of the outdoor air-sending device, and a liquid pipe temperature detector configured to detect a liquid pipe temperature of refrigerant flowing in the outdoor heat exchanger, the controller including: a dew-point temperature prediction unit configured to predict a dew-point temperature to be observed after elapse of a preset time, based on an outdoor air temperature detected by the outdoor air temperature detector; an evaporating temperature prediction unit configured to predict an evaporating temperature to be observed after elapse of a preset time of the refrigerant flowing in the outdoor heat exchanger during a heating operation; and an air-sending control unit configured to change a rotation speed of the outdoor air-sending device in such a manner that the evaporating temperature predicted by the evaporating temperature prediction unit exceeds the dew-point temperature predicted by the dew-point temperature prediction unit, a dew-point temperature prediction unit configured to predict a dew-point temperature to be observed after elapse of a preset time, based on an outdoor air temperature detected by the outdoor air temperature detector; an evaporating temperature prediction unit configured to predict an evaporating temperature to be observed after elapse of a preset time of the refrigerant flowing in the outdoor heat exchanger during a heating operation; and an air-sending control unit configured to change a rotation speed of the outdoor air-sending device in such a manner that the evaporating temperature predicted by the evaporating temperature prediction unit exceeds the dew-point temperature predicted by the dew-point temperature prediction unit, wherein the evaporating temperature prediction unit is configured to predict the evaporating temperature based on the liquid pipe temperature detected by the liquid pipe temperature detector.