Tiruvalla (alternately spelled Thiruvalla) is a town and a Taluk headquarters located in Pathanamthitta district in the State of Kerala in South India. Spread over an area of 27.94 km2, it is the biggest commercial centre in the district of Pathanamthitta. The town has a tropical climate with a temperatures ranging from highs of 34.4 °C in the summer to a low of 18.5 °C in the winter, with a healthy rainfall of 3040 mm.