This paper describes the characterization process for a scaled offshore renewable energy test site. In order to meet the International Panel on Climate Change targets to limit emissions, we will undoubtedly have to turn more to renewable energy sources [1]. As the potential of offshore energy is estimated to be up to twice the global electricity demand [2], investing in streamlining the development and testing of offshore renewable energy devices would help speed up carbon emission reductions. The need to test scale model prototypes before full-scale deployments is becoming a necessary step in the path towards commercialization. Early stage development testing of these devices is often carried out in laboratory basins, which can offer a controlled scaled environment, but they are not able to replicate the truly harsh environmental conditions of the ocean, including weathering, rusting, biofouling and climate. If an intermediary step of testing a scaled offshore device in the marine environment is added to the commercialization process, unexpected issues that arise due the environmental conditions would be much less costly and time consuming to remedy. Additionally, data obtained from different model test methods lack comparability [14]. This paper aims to provide a method that can be used to characterize scaled ocean test sites and identify a scale ratio that can be used to inform testing at the scaled ocean test site. The case study location for this work is in a semi-sheltered bay off of the Gulf of Maine which is referred to as the Castine Scaled Ocean Test Site (CSOTS). The site is characterized using a cross-shore array of Sofar Spotter Buoys to collect data on environmental conditions (Figure 1).