Wave overtopping field data collected at the sea walls in Dawlish and Penzance (southwest UK) between March 2021 and March 2022.

WireWall wave overtopping measurement systems were deployed around the sea walls at Dawlish and Penzance (southwest of England) to monitor overtopping during a period from the 10th of March 2021 to the 17th of March 2022. The systems were programmed to operate for every tide from 3 hours before predicted high tide to 3 hours after. Located at various distances inland of the sea wall crest at Dawlish and Penzance, the systems had varying configurations of capacitance sensors that measured the total depth of aerated water (both solid flow and spray). All overtopping times were recorded in UTC. These data were collected as part of the Coastal REsistance: Alerts and Monitoring Technologies (CreamT) project, NE/V002538/1.