This study is framed within Morocco’s energy transition context, aiming to achieve an energy mix comprising 52% renewable sources by 2030. It specifically focuses on analysing the offshore wind potential in five Moroccan sites offshore in the Mediterranean, highlighting their long-term viability in this context. Data regarding wind speed and direction are collected at a height of 50 m and extrapolated to the heights of wind turbine towers, namely 100 and 105 m. Two-time intervals are studied, covering periods of 43 and 7 years, respectively. It is noted that the difference in average wind speed between these two-time intervals does not exceed 3.35%. The study’s results primarily focus on the 43 years, deemed representative of long-term variability. Statistical parameters are computed, and the Weibull distribution is estimated using the maximum likelihood algorithm. The study reveals that the average wind speed varies between 4.65 and 6.49 m/s, while wind direction is predominantly unidirectional. The examined sites exhibit relatively high-capacity factors, ranging between 32 and 35% at a height of 100 m, and between 37 and 42% at 105 m. Importantly, except for site P5, all sites are deemed highly suitable for potential future offshore wind projects.