In order to predict the future sea level increase in the Pacific coast of Panama, the monthly data on sea level of Balboa (Republic of Panamá) from 1909 to 1998 has been examined to define the trend and the rise of the sea-level of the past century. In addition, the data from Balboa has been divided into five periods of twenty years each to be able to estimate the expected rate of change of the trend and total rise of the sea-level by the end of the current century. The sea-level at Balboa has risen about 20 centimeters in the past 100 years. But moreover, the rate of change for Balboa sea –level has constantly increased for each 20 years period indicating 1.70 cm at the beginning of the past century, while gradually increasing to nearly 8 cm at the end of the XX century. Predictions are made that this trend is likely to cause above a 50 cm sea level increase by the end of the XXI century. The global mean sea level has risen globally more than 15 centimeters in the past 100 years, and the climate change is expected to cause a further rise of about 30 centimeters by the year 2050. This warming would cause the sea to rise in two ways: through thermal expansion of ocean water and through discharges of freshwater from melting ice caps and mountain glaciers.