When Does Summer Start in 2027? Free Summer Countdown

When does summer start in 2027?

The June solstice (astronomical summer in the northern hemisphere), June 20 or 21. Astronomical summer begins at the June solstice, the longest day of the year in the northern hemisphere, when the sun reaches its northernmost point in the sky. Meteorological summer starts earlier, on June 1.

In 2027, summer falls on a Monday. In 2026 it was on a Sunday, June 21. In 2028 it will be on a Tuesday, June 20.

How the summer date is worked out

The date is the moment the Sun crosses the equator (an equinox) or reaches its furthest point north or south (a solstice). We calculate that moment with Jean Meeus's astronomical formulas and convert it to US Eastern time, which is why it can be a day earlier or later in other time zones. From 2026 to 2100 it falls between June 20 and June 21. How we calculate every date.

How many days until summer in weeks, weekdays and sleeps

The countdown counts calendar days from today to summer, so on the day before it shows 1. The weeks box splits that into whole weeks and days, the weekdays box counts Monday to Friday (useful for work and school planning, though public holidays are not taken out), and sleeps are the nights left. The timer counts down to midnight at the start of summer in your own time zone.

Summer dates for the next 7 years

Year	Date	Day of the week
2026	June 21, 2026	Sunday
2027	June 21, 2027	Monday
2028	June 20, 2028	Tuesday
2029	June 20, 2029	Wednesday
2030	June 21, 2030	Friday
2031	June 21, 2031	Saturday
2032	June 20, 2032	Sunday

Is the first day of summer a holiday?

No. The first day of summer is an astronomical event, not a holiday. Everything is open as normal.

Planning tip

Many people count down to the end of the school year rather than the solstice. School end dates vary by district, so use the make-your-own countdown for those.

Frequently asked questions

When does summer start in 2027?

Summer 2027 is on Monday, June 21, 2027. The rule: The June solstice (astronomical summer in the northern hemisphere), June 20 or 21.

How many days until summer?

The countdown at the top of this page shows the exact number of days, hours, minutes and seconds until summer 2027 (Monday, June 21, 2027), worked out live in your own time zone.

How many weeks until summer?

Divide the days in the countdown by seven: the "Weeks" box above shows the whole weeks and the days left over, so you can plan week by week.

Is the first day of summer a holiday?

No. The first day of summer is an astronomical event, not a holiday. Everything is open as normal.

Is the first day of summer the longest day of the year?

Yes. The June solstice has the most daylight of any day in the northern hemisphere. In the southern hemisphere it is the shortest day and the start of winter.

Related countdowns

Around the same time of year: how many days until Juneteenth, how many days until Father's Day, how many days until the 4th of July and how many days until Labor Day. See days until June and every holiday in June, or make a countdown to any date.

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See every holiday countdown →