Athurugiriya experiences a warm and humid climate year-round, with temperatures rarely dipping below 20°C. During the months of January to April, temperatures gradually rise, peaking in March and April with average highs around 29°C. The summer months from May to September see relatively consistent temperatures, ranging from 23-34°C, while June and July are slightly cooler than the rest of the period. Autumn brings similar conditions to summer, with temperatures fluctuating between 22-32°C. Winters in Athurugiriya are mild, with average highs rarely exceeding 26-27°C during December and January.