Tiruvallur's weather is characterized by warm temperatures throughout the year, with average highs ranging from 26-32°C during the winter months of January and February. As summer approaches in March, temperatures rapidly rise, often reaching as high as 41°C, with April being the hottest month on record. The mercury remains high until June, before gradually decreasing to more manageable levels by July and August. Autumn brings a slight cooling trend, but temperatures remain pleasant, ranging from 24-30°C during September and October. Winter returns in November and December, with average highs dipping slightly to around 27°C.