Orographic rainfall occurs in most part of the world. Winds coming from lakes or seas are moisture-laden. They are obstructed by the high mountain ranges coming in their way. They start going upwards along the slope of the mountains, the temperature of these winds drop and condensation occurs and rainfall takes place. The types of rainfall based on intensity can be classified as: Light rain Rate of rain varies between 0 to 2.5 millimeters. Moderate rain Rate of rain varies between 2.6 millimeters to 7.6 millimeters. Heavy rain Rate of rain is beyond 7.6 millimeters. Convectional rainfall is the most common among the 3 types of rainfall in India. It got its name from the 'convection currents' created in the atmosphere. Convectional rainfall occurs when the heat of the Sun raises the Earth's temperature to an extreme level, resulting in air evaporation.

Types of rainfall based on intensity are Light rain rate of rain varies between 0 to 2.5 millimeters. Moderate rain the rate of rain varies between 2.6 millimeters to 7.6 millimeters. Heavy rain – Rate of rain is beyond 7.6 millimeters. Convectional or convective rainfall occurs due to thermal convection currents caused by insulation heating of the ground surface. Orographic rainfall occurs due to the accent of air from highland. Cyclonic or frontal rainfall occurs due to upward movement of air caused by convergence of contrasting wind. Relief rainfall occurs in hilly or mountainous places, such as Wales, Scotland, the Alps and the Rockies. Places at the foot of hills or mountains which do not face the prevailing wind are in the rainshadow and do not get very much rainfall. Convectional rainfall as hot sun heats any water on the ground. The main difference between condensation and precipitation is that condensation is the process of water vapour turning into liquid water, while precipitation is the actual rain, snow, sleet, or hail that falls from the sky. Cyclonic rainfall also known as Frontal rainfall occurs when cooler air and warmer humid air meet in a weather front. The less dense warm air rises and condenses forming clouds. These clouds grow in size and become heavy and eventually create rainfall. Think of convective precipitation as falling from thunderstorms with strong updrafts while dynamic precipitation falls from a deck of stratus clouds. Convective precipitation tends to have lighting, thunder and heavy rain while dynamic precipitation is more of a gentle long lasting rain with no lightning and thunder. Orographic rainfall occurs in most part of the world. Winds coming from lakes or seas are moisture-laden. They are obstructed by the high mountain ranges coming in their way. Based on the data of a recent few decades, it appears to be the wettest place in the world, or the place with the highest average annual rainfall. Mawsynram receives over 10,000 millimeters of rain in an average year, and the vast majority of the rain it gets falls during the monsoon months. The Indian subcontinent experiences two main types of rainfall- the southwest monsoon and the northeast monsoon. The southwest monsoon, which is also called the 'long rains', lasts from June to September and brings about 75% of India's annual rainfall. When the energy of the sun heats up the earth's surface, there is an evaporation of water, forming water vapour. The warm air above the land surface expands and rises. The rising warm air cools and condenses, forming cumulus clouds. This results in a rainfall known as convectional rainfall.