Skip to main content

Factors Influencing the Climate of Northeast India | North East India Info

The climate of Northeast India in general Tropical Monsoon climate. Due to its location and the tropic of cancer passes across its souther part through Tripura and Mizoram. Therefore, it has essentially a tropical climate.

But its location and topography and presence of mountains and plateaus have rendered its climate somewhat different from that of other parts of India. The Factors influencing the region's climate may be listed as follows.

Climate Sub-regions of Northeast India

Factors Influencing The Climate of Northeast India

1. The situation of the hills, plateau, and mountains in the regions.

2. The seasonal change in the pressure condition over The Bay of Bengal on the one hand and over the north-western landmass on the other.

3. The tropical oceanic air-masses that blow over this region.

4. The occasional visit of the westerly lows in winter.

5. Presence of local mountain and valley winds.

6. Presence of numerous vast water bodies and extensive forests and development of local cyclones.

The climate of the region can be understood clearly with the following description:

  • The Himalayas in the North, the Patkai and other hills and mountains in the east and the Meghalaya Plateaus in the middle have affection the general tropical warm climate of the regions.
  • Many of these hills and mountains are high enough rendering the cool and bracing.
  • The Himalayan mountain chain and the Patkai and high ranges along with Manipur and Mizoram borders with Myanmar prevent the rains bearing monsoon winds from escaping from this region. Further, these ranges do not allow the dry and cold winds of central Asia to enter the Northeast region.
  • The Meghalaya Plateau, standing athwart the course of the southwest monsoon winds, make them rise geographically, causing the heaviest rainfall in the world in its southern margin.
  • The Himalayan and eastern hills ranges also cause an orographic rise of monsoon wind with consequent heavy rainfall in Northeast India.
  • Another very important effect of the encircling hills and mountains on the climate of the region is that in summer while the plains become hot, the air over the hills and mountains remains relatively cool.
  • Thus local low-pressure systems are built up over the valleys. these low-pressure systems over the Brahmaputra and Barak valleys obviously modify the climates of this region.

    Popular posts from this blog

    Northeast India Physiography and Physiographic Divisions | Physical Features

    Northeast India located in the extreme northeast corner of the Indian subcontinent with diverse physiography and relief features. In general, the region may be divided into three physiographical regions that are Plateau region, Plain regions and Mountain region. Because of its diversity of physiography the region endowed with rich and varied biophysical environments bounded by hills and mountains on its three sides except a narrow gap in the west.

    Purvanchal Range of North East India | UPSC, APSC | North East India Info

    The Purvanchal Range or Eastern Mountain is a sub-mountain range of Himalaya. “ Purvanchal ” as the name itself suggests, it is the eastern frontier region of India is surrounded by Bangladesh in the south-west, Myanmar in the south-east and china in the north-east. Its north-western limit, for a major part, follows the boundaries of Meghalaya-Mikir region, Assam valley and Eastern Himalaya and the plain areas of Tripura and Cachar are the continuations of Surma valley.

    Hills and Mountains of Northeast India | UPSC | North East India Info

    Hills and Mountain Ranges of Northeast India have two different geological and physiographical units. In the north-eastern part of the region hills and ranges are part of the Himalaya Mountain. On the other hand, the south-western part of the region's hills and ranges is the production of Peninsular Plateau.

    Soils Found in Northeast India - Classification, Distribution and Erosion

    Northeast India is a place of heavy rainfall, high relative humidity and high temperature cause rapid weathering of rocks. As the weathering of surface rocks of the hills and mountains proceeds, the sheet flood caused by heavy rainfall removes the weathered materials and carry them down to the headward steams of the rivers.  The rapidly flowing rivers then carry the sediments, big and small, down to the foothills and plains.