Yes, you can try to export it as a Data Table for example.
Please have a look in the WaterLocation Blueprint. It shows you how to calculate the water deformation vector (X,Y,Z) for a given point (X,Y) on the undeformed water surface by calling the CalculateDeltaOnly function of the WaterSettings Blueprint. You can call the CalculateDeltaOnly function repeatedly to query the shape of the deformed water surface at all the points of interest.
Internally, the CalculateDeltaOnly function calls the GerstnerWaveDeltaOnly function. In this function, you can override the time at which the GerstnerWaves are evaluated (be default the Game Time in Seconds is used):
So all you need to do is to write a small Blueprint that calls the CalculateDeltaOnly function repeatedly and stores the result in a Data Table. Then you can export the Data Table.