During the day time, due to sun light, the terrestrial part of the earth gets hotter than the water, thereby causing the development of low pressure in coastal land parts and high pressure in sea parts. The movement of these winds starts at 10 – 11 a.m. and becomes most active between 1 to 2 p.m. and ends by 8 o’clock in the night.
With the arrival of these winds, in the coastal parts of the tropical regions, the temperature drops to 5 – 7°C within 15 – 20 minutes. As a result, the weather becomes pleasant and healthy. These winds further cause rainfall in the coastal areas. These winds can only blow in the summers during the day time.