When summer really starts
There are two ways to define the start of summer. Astronomical summer begins at the June solstice, on June 20 or 21 in the northern hemisphere, the day with the most daylight of the year. Meteorological summer, used by weather services for statistics, starts on June 1 and runs through August. In the southern hemisphere, in Australia, New Zealand, South Africa or Argentina, the seasons are reversed: summer starts in December. This countdown uses June 21, the northern solstice.
When is Summer?
Summer falls on June 21 (northern hemisphere) every year. The countdown above switches to next year automatically once the day has passed.
Share it
Press Share countdown to send a link. Everyone who opens it sees the time left in their own time zone.
FAQ
Why is the summer solstice not always June 21?
The calendar year and the solar year are not exactly the same length, so the solstice moves between June 20 and 21 (rarely the 22nd) from year to year.
When does summer start in Australia?
December 1 for meteorological summer, or the December solstice around December 21 or 22.
How many days until Summer?
The live counter above shows the exact days, hours, minutes and seconds left.
Which time zone is used?
Your own device time zone, so midnight is your local midnight.