This study investigates the potential of non-contact infrared thermography as an early diagnostic tool for type 2 diabetes mellitus (T2DM) by analysing peripheral skin temperature patterns in diabetic and non-diabetic subjects. Employing a cross-sectional study design, thermal images of 100 participants were evaluated to identify distinctive thermal signatures associated with T2DM. The study found significant differences between the thermal patterns of diabetic patients and control subjects. These differences were especially noticeable in the lower limbs, where lower temperatures indicate poor peripheral circulation, a common problem in T2DM. Statistical analysis demonstrated the sensitivity and specificity of infrared thermography, supporting its potential as a non-invasive diagnostic tool. The findings suggest that infrared thermography could complement traditional diagnostic methods, allowing for earlier detection and intervention in diabetes management. The study highlights the need for further research to validate these findings and explore the integration of this technology into clinical practice.