Abstract:
A rainfall forecasting model for Sri Lanka is constructed using artificial feed-forward 
back-propagation neural network. The data obtained from meteorological station in 
Colombo is used. The rainfall data with the humidity and atmospheric pressure 
measurements taken at the ground level are used to train the network. The preliminary 
results indicate that the model is successful in predicting rainy days one day ahead in 
Colombo area with the accuracy of 67%. The possibilities for further improvement of the 
model are discussed.