Summer: Quick Facts

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The Information Architects of Encyclopaedia Britannica

Last updated

Oct. 21, 2026

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A tornado touches down on flat land beneath a dark storm cloud, with an orange-lit sky in the background.

A large tree with leaves turning orange in fall.

What is the summer solstice?

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Topics

Heat wave Why is summer warmer than winter?When Does Summer Start?How the 1815 Eruption of Mount Tambora Produced the “Year Without a Summer”Dog days calendar Summer solstice year Season Autumn Spring Winter Monsoon Why do we have seasons?