The effect of post-curing temperature variation on the apparent interlaminar shear strength of adhesively bonded composite panels was studied experimentally. Three different cases were studied: a) co-curing of two uncured laminates with an adhesive film, b) co-curing of a cured laminate with an uncured laminate with an adhesive film, and c) co-bonding of two cured laminates with an adhesive film. Short beam shear (SBS) tests were performed according to ASTM D2344 to assess the mechanical properties of the cured laminates. The results of this study can be used for assessing the mechanical performance of soft-patch and hard-patch repair.