The Tropical Cyclones play a significant role in the world natural disasters. At the time of the cyclones, the atmosphere and the ocean are constantly exchanging energy. In this study, spectral and statistical analyses of the waves affected by the Cyclone Ashobaa in the northern Indian Ocean were investigated. For this purpose, a Coupled Atmosphere–Wave model as a subsystem of COAWST (Coupled Ocean–Atmosphere–Wave–Sediment Transport) was employed. In this modeling system, the Weather Research and Forecasting model (WRF) and the Simulating Waves Near-Shore model (SWAN), were used. Four monitoring points were considered to analyze the waves in the northern Indian Ocean in the offshores of Mumbai, Karachi, Chabahar and Muscat. The results of wave simulation showed that, the wave height on the northeastern offshore of the Arabian Sea is higher than the wave height on the offshore of the Gulf of Oman. As a result, the east and northeast coasts of the Arabian Sea are mostly affected than the coasts of the Gulf of Oman by the Cyclone Ashobaa-induced storm surges and swells.