When Does Summer Start 20204 2025. The first day of summer does not always land on the same day every year. Each season lasts approximately 3 months and corresponds to a period of the year which has a relative constancy in terms of temperature and climate.

Each season lasts approximately 3 months and corresponds to a period of the year which has a relative constancy in terms of temperature and climate. Need to know the exact date of of the first day of summer this year?