The graphical representation is done of the data available this being a very important step of statistical analysis. A picture is worth a thousand words, or numbers, and there is no better way of getting a 'feel' for the data than to display them in a figure or graph. For understanding data available and deriving meaning and useful conclusion, the data have to be organized or arranged in some systematic way. Innovations are new ideas, devices, or processes. Innovations are the application of better solutions that meet new requirements, unarticulated needs, or existing market needs. It is proficient through more effective products, processes, services, technologies, or new ideas that are readily available to markets, governments, and society. Innovations are something original and novel, as a significant, new that breaks into the market or society. Time-series analyses for climatic factors are important in climate predictions. Rainfall is being one of the most important climatic factors in today’s concern for future predictions; thus, many researchers analyze the data series for identifying potential rainfall trends. The literature shows several methods in identifying rainfall trends. However, statistical trend analysis using Mann–Kendall equation and graphical trend analysis are the two widely used and simplest tests in trend analysis. Nevertheless, there are few studies comparing various methods in the trend analysis to suggest the simplest methods in analyzing rainfall trends. Therefore, this paper presents a comparative analysis of statistical and graphical trend analysis techniques for two tropical catchments in Sri Lanka. Results reveal that, in general, both trend analysis techniques produce comparable results in identifying rainfall trends for different time steps including annual, seasonal, and monthly rainfalls