This research offers a comprehensive comparative analysis of water vapor adsorption behaviors of commercial desiccants, namely silica gel, activated alumina, and zeolite 13X, both individually and in binary combinations (silica gel + zeolite, silica gel + alumina, alumina + zeolite). In addition, innovative silica gel composites containing paraffin, a phase change material (PCM), were evaluated for their ability to buffer thermal fluctuations and improve overall system efficiency. Experiments were conducted under controlled conditions in a desiccator, with relative humidity levels ranging from 40% to 80% and temperatures between 30°C and 90°C, which are typical of various industrial applications. Key performance metrics, including equilibrium adsorption capacities, isotherm profiles, and uptake kinetics, were systematically measured. The findings reveal that silica gel is most effective at high relative humidity, zeolite excels in low-humidity conditions, and alumina provides balanced performance with enhanced thermal stability. The integration of paraffin within silica gel composites was found to significantly mitigate temperature variations, resulting in a 5-10% increase in net adsorption capacity under specific conditions. Among the combinations tested, the silica+zeolite mixture exhibited the widest effective operational range, demonstrating its potential for applications requiring adaptable moisture control. This study provides valuable insights into the design of hybrid desiccant systems and sets the stage for future work focused on optimizing material combinations and scaling up for industrial use.