Abstract: Maximum temperature of umbilical cables was analyzed with different numbers of stacked layers and winding turns by finite element method to study the temperature rise of umbilical cables stacked on water during offshore operation. Additionally, effects of current, ambient temperature, and solar radiation on the maximum temperature of umbilical cables stacked with 6 layers were studied, and regression equations were obtained using the least square method. Results showed that maximum temperature of umbilical cables remained stable when stacking 1 or 2 layers, but increased by approximately 2 ℃ with each additional layer. With increase of the number of winding turns, temperature of umbilical cable increased and then decreased. To ensure optimal heat dissipation conditions for umbilical cables, the number of winding turns of umbilical cables must be at least 6 or more. The maximum error of regression equation proposed based on the change law between the current, ambient temperature, solar radiation and the maximum temperature of umbilical cables was 1.73% , which could provide a simpler and faster method for the maximum temperature of umbilical cables.