What this recap means, expanded. Geography is not scenery — it is the machinery of climate.
| Geography | What it does to the climate | Result |
|---|---|---|
| Mountains (Himalayas, Karakoram) | Great altitude; and they protect the subcontinent from the winds of the cold deserts of Central Asia | Alpine climate above, temperate hill stations below, and a north India far warmer than its latitude alone would allow |
| Mountains (Western Ghats) | Act as a natural barrier to the southwest monsoon | Tropical wet on the western slopes; much less rain, with interruptions, on the Deccan behind |
| Desert (Thar) | Nearly flat topography with nothing to protect it from hot, dry winds | Arid climate — extremely hot days, cool nights, very little rain |
| Plateau (Deccan) | Raised, inland, in the rain shadow of the Ghats | Semi-arid — hot summers, mild winters, moderate rain |
| Plains (northern) | Flat, far from the sea, shut in by mountains to the north | Subtropical — very hot summers, cold winters; India's wheat belt |
| Coasts and islands | Close to the sea, which moderates temperature; low latitude | Tropical and tropical wet — small temperature range, high humidity |