How many days until summer?
See how many days are left until the first day of summer, the June solstice, counted from today's date on your device. Further down: the exact time of the solstice each year, and the count to June 1, when summer starts for weather forecasters.
Summer starts in 224 days.
Counted from Monday, November 9, 2026.
When is summer?
The first day of summer is the June solstice, the moment the Sun is farthest north. It falls on June 20 or 21, depending on the year. We use the date in Eastern Time.
Source National Weather Service · Equinoxes and Solstices through 2030 ↗
| Year | Date | Day of the week |
|---|---|---|
| 2027 | June 21 | Monday |
| 2028 | June 20 | Tuesday |
| 2029 | June 20 | Wednesday |
| 2030 | June 21 | Friday |
What time does summer start?
The solstice is a moment, not a whole day: the moment the Sun is farthest north. It happens at the same instant everywhere, so the date can differ between time zones. In 2025 it was 10:42 p.m. on June 20 in Eastern Time, but already June 21 in Universal Time (the time scale the National Weather Service table uses). This page uses Eastern Time.
| Year | Eastern Time | Universal Time |
|---|---|---|
| 2025 | June 20, 10:42 p.m. | June 21, 02:42 |
| 2026 | June 21, 4:24 a.m. | June 21, 08:24 |
| 2027 | June 21, 10:11 a.m. | June 21, 14:11 |
| 2028 | June 20, 4:02 p.m. | June 20, 20:02 |
| 2029 | June 20, 9:48 p.m. | June 21, 01:48 |
| 2030 | June 21, 3:31 a.m. | June 21, 07:31 |
When does meteorological summer start?
Weather forecasters and climate scientists split the year into seasons of three whole months. Their summer is June, July and August, so meteorological summer always starts on June 1 and lasts 92 days. June 1 is 204 days from today.
Source NOAA NCEI · Meteorological versus astronomical seasons ↗
Other countdowns
- Days Until Your Birthday
- Days Until St. Patrick's Day
- Days Until Mother's Day
- Days Until Father's Day
- Days Until the Fourth of July
- Days Until Christmas
- Days Until Halloween
FAQs
What is the real first day of summer?
There are two answers. Astronomers count summer from the June solstice (June 20 or 21). Weather forecasters and climate scientists count it from June 1: their summer is June, July and August, which makes season records easier to compare from year to year.
Source NOAA NCEI · Meteorological versus astronomical seasons ↗
Is June 21st always the first day of summer?
No. The solstice falls on June 20 or June 21, depending on the year and your time zone. In Eastern Time it is June 21 in 2026, 2027 and 2030, and June 20 in 2028 and 2029.
Source National Weather Service · Equinoxes and Solstices through 2030 ↗
What day is the longest day of the year?
The day of the June solstice. For every place north of the Tropic of Cancer, the Sun is at its highest and it is the longest day of the year. In 2027 that is Monday, June 21.
How many days of summer is it?
Meteorological summer (June, July and August) is always 92 days. Astronomical summer, from the June solstice to the September equinox, changes length a little from year to year, because Earth’s orbit around the Sun is not a perfect circle.
Source NOAA NCEI · Meteorological versus astronomical seasons ↗