When Does Summer Start For 2024. When do the four seasons start in 2024—for spring, summer, fall, and winter? On average, summer lasts for about 93.6 days, according to timeanddate.com.

The meteorological seasons consist of splitting the seasons into four periods made up of three months each. While meteorologically, summer starts on june 1 and ends on august 31 (because fall begins on september 1 for them), astronomically, summer ends when fall begins on the.