Opinions about the data has been an important part of analyzing the opinions and sentiments. The sentiment analysis is a major part of data mining that has important applications in various fields. The novice customers get into any field by only getting reviews from the various websites or reviewers. The reviews are not necessarily correct all the time. So, we need to first analyze them and then put the things into place. The weather analysis is an application of opinion mining where the weather report for playing golf are taken and firefly algorithm is applied to optimize the results whether the weather condition is applicable to play or not.