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The first day of Summer, known as the Summer Solstice, falls on approximately June 21 each year in the Northern Hemisphere. In 2026, the Summer Solstice is on Sunday, June 21 — the longest day of the year with more daylight hours than any other day.
Summer is the season of beaches, vacations, longer evenings, and warmer weather. Our live countdown updates every second so you always know exactly how long until summer begins.
Around June 21 each year
Sunday, June 21
The longest day of the year
June 21 – September 22 in the Northern Hemisphere
The first day of Summer (Summer Solstice) is around June 21 each year. Use the live countdown above for the exact days, hours, minutes and seconds remaining until Summer 2026.
The first day of Summer 2026 is on Sunday, June 21, 2026 — the Summer Solstice in the Northern Hemisphere.
The Summer Solstice is the day when the Sun reaches its highest point in the sky, giving the Northern Hemisphere its longest day and shortest night of the year. It marks the astronomical start of summer.
Earth's axis is tilted at 23.5 degrees. Around June 21, the Northern Hemisphere is tilted most directly toward the Sun, resulting in maximum daylight hours — sometimes up to 17+ hours depending on your latitude.
No — when it is Summer in the Northern Hemisphere (June–September), it is Winter in the Southern Hemisphere. Countries like Australia experience summer in December.
Use our live Summer countdown at the top of this page. It automatically calculates the exact days, hours, minutes, and seconds remaining until June 21, 2026.