Weather and climate
Weather describes the state of the atmosphere at a particular place and time. Climate describes patterns in weather over long periods. A rainy afternoon is weather; a region's typical seasonal rainfall is part of its climate.
India's climate is influenced by latitude, altitude, distance from the sea, relief, and winds. Coastal places usually have smaller temperature ranges than inland places because water heats and cools more slowly than land.
Weather is short term. Climate describes long-term patterns.
Understanding the monsoon
A monsoon is a seasonal change in prevailing winds. In the warm season, land heats more quickly than the surrounding sea. Lower pressure over the land helps draw moist air inland.
The southwest monsoon has Arabian Sea and Bay of Bengal branches. Mountains influence where moist air rises, cools, and produces rainfall. Windward slopes can receive substantial rain, while leeward areas may lie in a rain shadow.
The monsoon is a complex circulation system. Differences in heating are a useful starting point, while pressure belts, the ocean, and upper-air circulation also matter.
Connecting the seasons
Many introductory accounts describe a cool season, a hot season, the southwest monsoon season, and a retreating monsoon period. Timing and conditions vary across regions.
During the retreating period, northeast winds can pick up moisture over the Bay of Bengal and bring rain to parts of southeastern India. This explains why rainfall patterns differ even within one country.
Build a cause-and-effect answer
Instead of memorising ‘mountains cause rain’, explain the steps: moist air meets a mountain barrier, rises, cools, and water vapour condenses. Precipitation can then occur.
To compare coastal and inland climates, connect the observation to the different heating and cooling rates of land and water. Clear geographical answers link a pattern to a process.