A wireless communication system including: a memory; a wireless communication unit provided at a vehicle that wirelessly communicates with an external communication device positioned externally to the vehicle; and a processor that is provided at the vehicle and is coupled to the memory, the processor being configured to: cause the wireless communication unit to notify a communication terminal positioned externally to the vehicle, based on an instruction received from an occupant of the vehicle or based on disaster information received from the external communication device by the wireless communication unit.