Summer might not officially begin until June 20 with the summer solstice, but meteorologists and climatologists actually consider June 1 the beginning of summer. While the summer solstice is not until June 20, many scientists consider the start of summer to be much sooner. People look forward to summer every year.
But what is the first day of summer in 2025? about when it starts, the summer solstice and more. When does summer officially start? It depends While meteorological summer begins on June 1, the summer solstice marks the start of astronomical summer. Hot temperatures expected Meteorological summer begins June 1, and this year forecasters are predicting warmer.
Many climate scientists define the start of summer in terms of meteorological phenomena and the calendar year. They claim that the meteorological summer season starts on June 1 and lasts three months, until September 1. Other people define the beginning of summer in academic terms.
As of June 19, 2025, America stands at the threshold of summer, meaning it is astronomically poised for the summer solstice on June 20, while meteorologically, summer in the USA has arrived since. The Summer Solstice happens on Friday, June 20, 2025! Find the answers to common questions, like: What is a solstice? Is the solstice the longest day of the year?-and more! Seasons. Watch here when spring, summer, autumn and winter begins and ends.
Both the Astronomical and Meteorological seasons are listed here. JUNE 1 - Today marks the beginning of meteorological summer. Meteorologists measure seasons using three-month periods for easier record keeping, which means Meteorological Summer lasts from June 1 until August 31.