The wave data measured using the Datawell directional wave rider buoy at 13 m water depth off Ratnagiri during 2010 to 2013 is used to study the inter-annual variations in the wave characteristics. The percentage occurrence of waves with significant wave height (Hs) less than 1 m is the same in all 3 years, but the occurrence of high waves (Hs > 1 m) is not same in all the years. The extreme wa…