Not AC or air coolers, but this traditional Tamil Nadu design method can keep homes cool even in 40°C summer heat. But it has another surprising benefit

The hot and humid summer months are upon us. Even if you prefer this season over winter, you have to agree that the scorching temperatures can sometimes become just too unbearable. At such times, turning on the air conditioner or standing in front of air coolers seems to be the only respite, even if it comes with a hefty electricity bill. But what if we told you that there’s a traditional home design method that can keep your home cool even in the terrible afternoon heat? Sadly, this in-built cooling system is rapidly disappearing in the wake of rapid urbanisation.

All you need to know about thinnai

Originating in Tamil Nadu, this cooling system is locally known as thinnai, which translates to porch or verandah, operating as a transitional space between street and house, as per a report by The Better India. Built with lime, stone, and surkhi, this simple raised platform, extending as a part of a home, is sustainable and well-suited to India's tropical climate.


This semi-open rowak delivers ample ventilation, allowing fresh air to flow and spread inside the rooms, providing much-needed relief from the heat. What’s more, the overhanging roof gives shade and protection, which can reduce the need for artificial cooling systems. But thinnai is more than an alternative to modern cooling machines. It serves as a communal space for socialising, gatherings and interactions with family members, friends, relatives, as well as strangers.

Traditional porch brought communities together

The front porch has long been a symbol of hospitality where travellers would sit, take rest and meet the residents, all while basking under the cool shade, sheltered from the fiery sun, according to the Hindu. Since there’s no way sunlight could penetrate through the space, children can also play here till sunset. In a way, thinnai creates a buffer zone between the external environment and the interior of the house, which brings people together and helps them stay connected, an aspect which is slowly fading in today’s fast-paced world.

Thinnai was prevalent in agrarian societies, where neighbours would gather to share news, exchange ideas, and seek refuge from the scorching sun or even torrential rain. They were typically decorated with intricate carvings, motifs and embellishments, displaying the wonderful craftsmanship of skilled, local artisans. But as we switch to contemporary house models and designs, thinnai’s relevance is fading into oblivion, with barely a few homes still retaining this thoughtful architectural feature.