This article explores effective methods of postharvest handling and storage of watermelon (Citrullus lanatus) to preserve its quality, prolong shelf life, and reduce losses during transportation and marketing. As a highly perishable fruit with high water content, watermelon is sensitive to temperature, mechanical damage, and microbial decay. The paper discusses key factors affecting watermelon shelf life, such as optimal harvesting time, handling procedures, temperature and humidity control, packaging innovations, and the use of modern preservation technologies. The study emphasizes the importance of applying good postharvest practices to improve market value, reduce waste, and support the fruit supply chain from farm to consumer.