The most common rain type is called convection rain. It is created when the Sun warms up the surface of the Earth.

As air heats up, it begins to rise. As it rises, the air becomes colder. Finally, the air eaches the dew point and the moisture contained within it begins to condense into cloud droplets. When these droplets accumulate enough mass, they begin to fall down as rain.

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Convection rain is especially common in planet Earth's tropical zone. The afternoon rain common to rainforests is an example of convection rain. In Europe, convection rains usually occur during the summer months, and often take the form of thunder storms.

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Convection rain begins to form when humid air ascends. Tall cumulus clouds (pictured) are formed during this process.