Where Did The Verandah First Appear?
Although not certain, these structures originated on the east side of the world, where the weather is humid. Moreover, they allow for shade and fresh air in the sun. They also offer shelter in the rain.
In the mid-1800s, verandahs were built in India as they were stylish and aesthetic to the English. Furthermore, they added elegance and class to properties and a covered area to enjoy the garden from. Other British colonies then benefited from the same structures, such as those in Australia and New Zealand. 
Verandas Around The World
Verandahs are in use all around the world. In some areas of Japan, snow can fall heavily. Hence, verandas wrap around buildings for protection. Moreover, in Poland, they are unheated annexes, with or without glass walls surrounding homes. Brazillian verandas often face the direction of the sunrise. Whereas in the United States, they are decorative additions to most houses – particularly in the south as they act as a shade.