In modern industrial sewing, the further rise in sewing speed to increase production is mainly influenced by the extent of needle heat generated. The increased needle heat leads to damage to the sewing thread and fabric and a loss in productivity. Hence, the change in sewing needle temperature under various fabric types and sewing conditions is investigated for better understanding. An objective method to assess the generation of needle heat by utilizing a thermal camera is attempted, and the effects of change in needle heat by varying the parameters are assessed. The results from the thermal camera are statistically analyzed. The superimposed seam with a greater number of layers and high needle tension produced high needle heat, whereas poly-poly core spun sewing thread, 100 % polyester fabric, and a high stitch density contribute to the next level of needle heat generation. This investigation considered all the possible influencing parameters objectively and helps in maintaining reduced needle heat for a chosen fabric type and sewing conditions to improve the productivity with increased sewing speed.