Summer 2027 countdown

There are 229 days left until summer, which falls on Monday, June 21, 2027 this year. That is 32 weeks and 5 days, or about 5,496 hours.

It begins at the astronomical instant of the equinox or solstice, calculated with Jean Meeus’ formulas; the exact time changes every year.

The exact moment is June 21, 2027 at 10:11 AM in New York and June 21, 2027 at 3:11 PM in London.

When is summer in the coming years?

Countdown facts

• Last time was Sunday, June 21, 2026, 136 days ago.
• 37% of the time between 2026 and 2027 has already passed.
• There are 19,785,600 seconds left.
• In 2027 it falls on Monday; in 2028 it will fall on Tuesday.