Designated wave energy test site for supporting ocean energy device research and development at 1/4 scale. The Galway Bay 1/4 scale wave energy test site is located 1.5km from Spiddal pier within inner Galway Bay on the west coast of Ireland. Data has been collected in Galway Bay since 2008. Data is collected from current meter sensors, wave device sensors and water temperature sensors. Data has been collected to support ocean energy research technological innovation and development. Data has been collected by the Marine Institute in association with SmartBay Ireland. Data has been incomplete given periods of outage of wave energy sensors. Data has been complete and quality controlled for period devices are observing and measuring in the marine environment.