Perunkalattu's weather is marked by a gradual increase in temperatures as the year progresses. The winter months of January and February bring mild temperatures, ranging from 21-33°C, while March marks the onset of warmer days with highs reaching up to 40°C. Spring and summer months, April to June, see consistent high temperatures, averaging around 30-32°C, with July and August experiencing slightly cooler days. Autumn months, September to November, bring a slight decrease in temperature, but still remain warm, ranging from 24-33°C. Winters return in December, bringing back mild temperatures, similar to those of January and February.