Puttalam's climate is characterized by a relatively consistent temperature throughout the year, with average highs ranging from 28-29°C during the peak months of April and September. Winters are mild, with temperatures rarely dipping below 20°C in December and January. Spring and autumn seasons bring slight increases in temperature, with March and October experiencing average highs of 36°C. Summer months of May to July see temperatures stabilizing around 28°C, while winters are cooler, but still warm. The overall temperature range is relatively narrow, indicating a tropical savanna climate with distinct seasonal variations.