The climatic conditions of India can be categorised in terms of an annual cycle of seasons. Four main seasons are : (i) The Cold Weather Season (December - February) -It begins in mid-November in north India and continues till February-March. -The average temperature in the Northern plains is 10°- 15°C and 25°C in south India. -Winds blow from the high pressure areas of Northwest India to low pressure areas. -The weather is fine and really delightful. -Light winter rains are followed by cold waves in the northern parts. -Coromondal coast also receives rains caused by North-eastern winds. (ii) The Hot Weather Season (March - May) Temperature rises and air pressure falls. -Temperature ranges from 41°C - 42°C in the northwestern India. -In the north-west region the dry and hot winds (loo) blow. (iii) The Advancing Monsoon Season (June - September) South-west monsoon winds travel over the Indian ocean through Arabian sea and Bay of Bengal and bring rains almost all over the country. -The rain-bearing winds blow at an average speed of 30 km per hour. -About three-fourth of rainfall in India is received in this season. (iv) The Retreating Monsoon Season (October - November) The monsson retreats from Punjab and Rajasthan and then from the entire peninsula from September to November. -The retreat of the monsoons is marked by clear skies and decrease in temperature. -The north-east trade winds take over, and coastal Tamil Nadu receives rainfall due to these winds from October to December. -In the second half of October the mercury begins to fall rapidly.
Posted on: Mon, 15 Jul 2013 04:13:06 +0000