Efficient irrigation management plays a critical role in sustainable agriculture and water conservation. This paper presents the design and implementation of a cloud-enabled smart irrigation system using the ESP32 microcontroller and the Blynk IoT platform. The system monitors soil moisture, temperature, and humidity in real time using an analog soil moisture sensor and a DHT22 environmental sensor. Based on threshold-based decision logic, a relay-controlled water pump is automatically activated when the soil becomes dry and deactivated when sufficient moisture is detected. The system integrates cloud connectivity through the Blynk IoT platform, enabling remote monitoring and control via a mobile dashboard. It supports both automatic irrigation mode and manual override mode. A 16×2 LCD provides local real-time system feedback. The proposed solution demonstrates a low-cost, scalable, and hybrid edge-cloud IoT architecture suitable for smart agriculture and small-scale irrigation systems.