Days Until Summer
Astronomical summer in the Northern Hemisphere begins at the June solstice, on June 20 or 21 in most years.
About the date
The solstice is a single instant — the moment the Sun reaches its northernmost point in the sky — so this countdown runs to that exact time, shown in your time zone. It is the longest day of the year in the Northern Hemisphere.
Meteorologists use a simpler definition: summer is June, July and August, starting June 1. In the Southern Hemisphere the seasons are reversed, and the June solstice starts winter.
The time is calculated on this page from a standard astronomical formula and is accurate to about a minute.
Upcoming dates
| Year | Date | Day | Time (UTC) |
|---|---|---|---|
| 2026 | June 21 | Sunday | 08:24 |
| 2027 | June 21 | Monday | 14:10 |
| 2028 | June 20 | Tuesday | 20:02 |
| 2029 | June 21 | Thursday | 01:48 |
| 2030 | June 21 | Friday | 07:31 |
| 2031 | June 21 | Saturday | 13:17 |
Questions people ask
Is the first day of summer always June 21?
No. The June solstice falls on June 20 or 21 depending on the year and your time zone, and occasionally June 22 in time zones far ahead of UTC.
When does meteorological summer start?
June 1 in the Northern Hemisphere. Weather services group the seasons by whole months.
When does summer break start?
That depends on your school district. This countdown is for the astronomical season; use the countdown tool to count to your own last day of school.