How Many Days Until Summer? Countdown
There are 294 days until Summer solstice on Monday, June 21, 2027. Astronomical summer in the Northern Hemisphere begins at the June solstice — 08:24 UTC on 21 June 2026, then 14:11 UTC on 21 June 2027. The timer uses that instant, not Memorial Day and not June 1. Decimal months and weeks update with the clock.
2026–2028 dates
| Year | Date |
|---|---|
| 2026 | Sunday, June 21 |
| 2027 | Monday, June 21 |
| 2028 | Tuesday, June 20 |
Add Summer solstice to your calendar
How this timer counts
Timezone still matters for reading the clock, but the solstice is a single UTC moment. Switching zones will not move that instant; it only changes how the remaining hours display on your clock.
Countdown to summer at the June solstice
The solstice is when Earth’s North Pole tilts most toward the Sun. It is the longest daylight of the year, not the hottest stretch. Meteorological summer is June–August, which is why some people search this in May and others in August (for next year).
| Definition | 2026 start | Notes |
|---|---|---|
| Astronomical summer | 21 Jun, solstice | Used by this timer |
| Meteorological summer | 1 Jun | Climate averaging |
| Memorial Day weekend | 22–25 May 2026 | Cultural “start of summer” |
How many days until summer from today
US schools often end in late May or early June, so “summer” in search logs mixes the solstice with last-day-of-school. This page stays on the solstice so the answer does not depend on your district calendar.
Why this countdown exists
This countdown exists because “How Many Days Until Summer” is a real remaining-days search. Summer solstice is the civil date people mean. They count to it for the named observance and for travel, school, and plans that share the same morning. The timer uses midnight in the timezone you pick.
When does summer 2027 start?
The June solstice is 21 June 2027, 14:11 UTC.
Why not June 1?
June 1 is meteorological summer. Searchers asking “until summer” usually want the solstice or school break; this page documents both and counts the solstice.
What if it is already August?
The timer rolls to the next June solstice.
Is summer 3 months or 2?
Meteorological summer in the Northern Hemisphere is June, July, and August — three months. Astronomical summer runs from the June solstice to the September equinox, about three months as well.
Is July 22 the longest day?
No. The longest day in the Northern Hemisphere is the June solstice (21 June 2027 on this timer), not July 22.