Tissamaharama's climate is characterized by a distinct seasonal pattern. The dry season, which spans from January to May, brings warm temperatures ranging from 17-35°C, with an average high of 27-28°C. June marks the beginning of the southwest monsoon, bringing increased humidity and temperatures that remain steady around 27-28°C. As the monsoon intensifies in July and August, temperatures fluctuate slightly but remain relatively constant, before gradually decreasing to 26-27°C by November. The dry season returns in December, with cooler temperatures from 12-32°C, marking a gentle transition into the following year's dry spell.