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When Does Summer Start in 2027?

Summer 2027 starts on Monday, June 21, 2027 in the Northern Hemisphere, at 14:10 UTC (10:10 AM EDT). In 2028 it starts on Tuesday, June 20.

Sources: US Naval Observatory, Wikipedia Updated

247 days to go: open the live countdown

First day of summer dates, 2027 to 2036

the first day of summer dates for ten years
YearDateDayStarts (UTC)US Eastern time
2027 MondayJune 21, 2027, 14:10 UTCMonday, June 21, 2027 at 10:10 AM EDT
2028 TuesdayJune 20, 2028, 20:01 UTCTuesday, June 20, 2028 at 4:01 PM EDT
2029 ThursdayJune 21, 2029, 01:48 UTCWednesday, June 20, 2029 at 9:48 PM EDT
2030 FridayJune 21, 2030, 07:31 UTCFriday, June 21, 2030 at 3:31 AM EDT
2031 SaturdayJune 21, 2031, 13:17 UTCSaturday, June 21, 2031 at 9:17 AM EDT
2032 SundayJune 20, 2032, 19:08 UTCSunday, June 20, 2032 at 3:08 PM EDT
2033 TuesdayJune 21, 2033, 01:01 UTCMonday, June 20, 2033 at 9:01 PM EDT
2034 WednesdayJune 21, 2034, 06:44 UTCWednesday, June 21, 2034 at 2:44 AM EDT
2035 ThursdayJune 21, 2035, 12:32 UTCThursday, June 21, 2035 at 8:32 AM EDT
2036 FridayJune 20, 2036, 18:31 UTCFriday, June 20, 2036 at 2:31 PM EDT

Dates are for the Northern Hemisphere and are given in UTC and US Eastern time. In time zones far from these the calendar date can be a day earlier or later.

Calendar for June 2027 with the June solstice on Monday, June 21, at 14:10 UTC marked.
Summer 2027 starts at 14:10 UTC on June 21.

How the date of the first day of summer is set

Astronomical summer in the Northern Hemisphere begins at the June solstice, which falls on June 20 or 21 in most years.

At the June solstice the Sun reaches its northernmost point in the sky, giving the Northern Hemisphere its longest day of the year.

The US Naval Observatory publishes the equinox and solstice times. The times on this page are calculated with Jean Meeus's method and agree with them to within a minute or two.

Also coming up: the first day of fall on Thursday, September 23, 2027, Fourth of July on Sunday, July 4, 2027, and Memorial Day on Monday, May 31, 2027.

What time does summer start?

The June solstice comes about six hours later each year and about 18 hours earlier after a leap day: 14:10 UTC in 2027, 20:01 UTC in 2028 and 01:48 UTC in 2029.

In UTC, from 2027 to 2036 it falls on June 21 in seven years and on June 20 in three. In US Eastern time it is still the evening before in two of those years.

Chart of the June solstice time in UTC from 2027 to 2036: June 21 at 14:10 in 2027, June 20 at 20:01 in 2028, June 21 at 01:48 in 2029, June 21 at 07:31 in 2030, June 21 at 13:17 in 2031, June 20 at 19:08 in 2032, June 21 at 01:01 in 2033, June 21 at 06:44 in 2034, June 21 at 12:32 in 2035, June 20 at 18:31 in 2036.
The June solstice comes about six hours later each year until a leap day pulls it back.

June solstice facts

At the June solstice the Sun stands directly over the Tropic of Cancer. By the Gregorian calendar it falls between June 20 and June 22.

  • Meteorologists count summer from June 1 instead.
  • In the Southern Hemisphere the June solstice is the start of winter, and summer begins at the December solstice.

Questions about the first day of summer

What day does summer start in 2027?

Monday. Summer 2027 starts on June 21, 2027.

How many days until the first day of summer?

247 days, counted from October 17, 2026. The summer countdown shows the number for today in your time zone. To count to any other date, use the days between dates calculator.

Is the first day of summer on the same date every year?

No. Astronomical summer in the Northern Hemisphere begins at the June solstice, which falls on June 20 or 21 in most years.

When does summer start in 2028?

Tuesday, June 20, 2028.

Sources

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