Villianur experiences a tropical wet and dry climate (Köppen climate classification *Aw*), similar to the rest of the Puducherry region. The climate is generally hot and humid throughout the year.
* **Temperatures:** Summer months (April to June) are hot, with average highs ranging from 35°C to 38°C (95°F to 100°F). Winter months (December to February) are pleasant and slightly cooler, with average temperatures hovering around 22°C to 30°C (72°F to 86°F). * **Rainfall:** The region receives the bulk of its rainfall from the Northeast Monsoon between October and December. The annual rainfall averages around 1,200 mm to 1,300 mm. * **Natural Disasters:** The area is susceptible to cyclonic storms forming in the Bay of Bengal, particularly during the monsoon season, which can bring heavy rains and strong winds. * **Best Time to Visit:** The most comfortable time to visit Villianur is between October and March, when the weather is cooler and the landscape is lush post-monsoon.