A communication device is provided in a vehicle and is configured to communicate with an external center. The communication device includes a collection unit configured to collect data to be transmitted to the center, a communication unit configured to transmit the data collected by the collection unit to the center, a prediction unit configured to predict an occurrence of communication interruption between the center and the communication unit based on predetermined information, and a controller configured to cause the communication unit to stop transmitting the data in a case where the prediction unit predicts that a predicted time from a current time to the occurrence of communication interruption is less than a first predetermined time.