Automatic Rain Gauge is type of instrument used by meteorologists and hydrologists to gather and measure The intensity and duration of rainfall . Automatic Rain Gauge is integrated with GPRS-Getway communication for streaming data and one-way voice call (missed call) for additional rainfall data. Automatic Rain Gauge system tool is equipped with alarm to give warning for five numbers of cellular phones automatically if the accumulation of rainfall are more than 50 mm. It’s hoped that the substitution of the common rain stations can generate more advantages included network, cost, and the simplicity of operation and accuracy data. This instruments will help observer who have not specific education in meteorology or climatology.