Karaikkudi's climate is characterized by a gradual increase in temperatures throughout the year, with a peak in April and May. The summer months of March to May are hot and humid, with temperatures often reaching above 36°C. During this period, the mercury dips slightly during the night, ranging from 21-25°C. Autumn and winter months, October to February, experience a mild temperature range, averaging around 26-29°C, with slight fluctuations between day and night temperatures. The overall temperature pattern shows minimal seasonal variation, but a consistent increase in temperature as the year progresses towards summer.