Longshore currents play the main role in sediment transport along the coast, Records for 14 years period from different stations at many places on both sides of Damietts promontory has been analysed. From these analyses the maximum and average longshore current velocity and their percentage of occurrence during each month and each season on both sides of Damietta promontory were derived using statistical analysis technique. The analysis showed that the predominant current direction on both sides of promontory is towards East except in some few months (March, December, April, and/or May) where the current reverses its direction. The Maximum measured longshore current velocities were 75-91 cm/sec and 59-91 cm/sec towards East and West respectively. Also, the average measured longshore current velocities were 26-30 cm/sec and 23-28 cm/sec towards East and West respectively. Also it's found that during July and August, most of the currents are towards East and very little is in the opposite direction (the percentage does not exceed 12%). The current records were used the calibrate various formula which predict the longshore current velocity at the middle of the surf zone using the available wave records.