Traditionally the second of the four seasons regarded as being from June 21 to September 20 (or just June, July and August) in the Northern Hemisphere and from December 21 to March 20 (or just December, January and February) in the Southern Hemisphere.
occurring in or appropriate to the season of summer; "summer flowers"
spend the summer; "We summered in Kashmir"
the warmest season of the year; "they spent a lazy summer at the shore"
the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox; "they spent a lazy summer at the shore"
the period of finest development, happiness, or beauty
the warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox