The Himalayas and the Indian Ocean has a great influence on the climate of India. The Himalayan ranges act as a barrier and obstructs the very cold Wind blowing from the North. Again orographic type of rainfall occurs because of the natural obstruction of the Himalayas. The Himalayas prevent the cold winds from Central Asia from entering the subcontinent. It is because of these mountains that this subcontinent experiences comparatively milder winters as compared to Central Asia.

The Himalayas and Indian Ocean acts as a strong defense barrier. The Himalayas save our country from the cold and dry winds of Central Asia. They also prevent the monsoon winds of the Indian Ocean from crossing over to Northern countries and cause heavy rainfall in Northern India. The Himalayas prevent the cold winds from Central Asia from entering the subcontinent. It is because of these mountains that this subcontinent experiences comparatively milder winters as compared to Central Asia. Indian Ocean constitutes the core of the large-scale Tropical Warm Pool which, when interacting with the atmosphere, affects the climate both regionally and globally. Asia blocks heat export and prevents the ventilation of the Indian Ocean thermo cline. The Indian Ocean and the Himalayas play a major role in affecting the monsoon and climate of India. The Himalayas protect India from bitterly cold winds that blow from the north. Thus, India does not experience severe cold during winter. At the beginning of summer, the temperature on the main land increases. The Himalayas play a very significant role in influencing the climate of India. By virtue of their high altitude, length and direction, they effectively intercept the summer monsoons coming from the Bay of Bengal and Arabian Sea and cause precipitation in the form of rain or snow. Historically, India has served as the resident power in the IOR and its littorals. Occupying 40% of strategic waters, India's national interests are inherently tied to the region's dynamics. India is centrally located, shares civilization ties, and has strong Diasporas in many of the countries across the IOR. The Indian Ocean, for example, modulates regional weather and climate over the Indian subcontinent. Various oceanic and atmospheric processes here regulate the Indian monsoon, which supports diverse ecosystems as well as agriculture. The oceans also regulate the global climate; they mediate temperature and drive the weather, determining rainfall, droughts, and floods. They are also the world's largest store of carbon, where an estimated 83% of the global carbon cycle is circulated through marine waters. Ocean currents act much like a conveyor belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface. Himalayas prevent the cold winds of Central Asia from entering India. This prevents India from experiencing very cold winters and Himalayas also prevent the rain-bearing monsoon winds from leaving the country thus allowing the country to receive sufficient rainfall.