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对1980—1990年的北印度洋气象船舶报资料，按2°×2°网格进行了分析。通过分析研究阐明了北印度洋风、浪、涌的特点及其变化规律。这一海区是世界著名的季风气候区，季风时期的风向、风浪传播方向、涌浪传播方向基本一致，夏季的西南季风比冬季的东北季风要强盛得多，大浪大涌频率高达80％－90％。该海域与南海属同一类型，但特点正好相反。按照船舶航行对水文气象条件的要求，横穿北印度洋的时间以季风转换月份为最佳，冬季次之，夏季航行则相当危险。
Data for the North Indian Ocean meteorological vessel 1980-90 were analyzed by a 2 ° × 2 ° grid. Through analysis and study, the characteristics and variations of wind, waves and surges in the North Indian Ocean are clarified. The sea area is a world-famous monsoon climate zone. The wind direction during the monsoon period, the direction of the waves and the wave propagation are basically the same. The southwest monsoon in summer is much more powerful than the northeast monsoon in winter. The frequency of the big waves is as high as 80% -90% . The sea area and the South China Sea are of the same type, but the opposite is true. According to the hydrological and meteorological requirements of ship sailing, the time of transiting the North Indian Ocean is best when the monsoon is changed in the month, followed by the winter and the summer sailing is quite dangerous.