A wireless communication terminal includes a transmission power control unit that changes transmission power; a first storage unit that pre-stores an association of a transmission power value with a difference between a terminal temperature and an ambient temperature; a temperature detection unit that detects a temperature of the terminal to obtain a terminal temperature value; a transmission power detection unit that detects a current transmission power value; a calculation unit that calculates a current ambient temperature value near the terminal; and a temperature estimation unit that estimates a terminal temperature value corresponding to an intended transmission power value based on the current ambient temperature value calculated by the calculation unit, the transmission power value to which the transmission power is changed, and the association of the first storage unit.