38 weeks until Summer Solstice
There are 38 full weeks and 4 days until Summer Solstice, which falls on Monday, June 21, 2027. As a single figure that is 38.6 weeks, and as working time it is 38.4 working weeks.
How many weeks until Summer Solstice?
38 weeks and 4 days. The longest day of the year in the northern hemisphere, usually 20 or 21 June. The 4-day remainder is the offset between today, a Thursday, and Summer Solstice, a Monday. For the day figure ticking live, use the Summer Solstice countdown.
Week by week to Summer Solstice
There are 39 Monday boundaries between now and Summer Solstice, and crossing each one takes a week off the count.
| Week boundary | Week starts | ISO week | Weeks still to go |
|---|---|---|---|
| 1 | September 28, 2026 | 40 | 38 |
| 2 | October 5, 2026 | 41 | 37 |
| 3 | October 12, 2026 | 42 | 36 |
| 4 | October 19, 2026 | 43 | 35 |
| 5 | October 26, 2026 | 44 | 34 |
| ... | 29 further weeks not listed | ... | ... |
| 35 | May 24, 2027 | 21 | 4 |
| 36 | May 31, 2027 | 22 | 3 |
| 37 | June 7, 2027 | 23 | 2 |
| 38 | June 14, 2027 | 24 | 1 |
| 39 | June 21, 2027 | 25 | 0 |
Which week of the year does Summer Solstice fall in?
Summer Solstice 2027 sits in ISO week 25, while today sits in week 39. Because Summer Solstice keeps the same calendar date every year, its ISO week number still drifts, by one week at a time, as the weekday of June 21 moves forward. The Monday-to-Sunday dates are listed on the week 25 page.
How many weekends are left before Summer Solstice?
39 weekends, counting Saturdays that have not yet passed, out of the 270 days ahead. Of those days, 192 are working days and 78 fall at a weekend. Weekly commitments are easier to plan against the weekday tally than against the raw week count: 39 Mondays and 39 Fridays remain. The weekends until Summer Solstice page sets out the counting rule in full.
Weeks until Summer Solstice in coming years
| Year | Date | Weekday | Weeks from today | Odd days |
|---|---|---|---|---|
| 2027 | June 21 | Monday | 38 | 4 |
| 2028 | June 21 | Wednesday | 90 | 6 |
| 2029 | June 21 | Thursday | 143 | 0 |
| 2030 | June 21 | Friday | 195 | 1 |
| 2031 | June 21 | Saturday | 247 | 2 |
The gap between 2027 and 2028 is 366 days, or 52.29 weeks, so the week count never simply rises by 52.
Questions
- How many weeks until Summer Solstice?
- 38 weeks and 4 days, from September 24, 2026 to June 21, 2027.
- How many working weeks is that?
- 38.4, being 192 Monday-to-Friday days at five per week.
- What day of the week is Summer Solstice 2027?
- A Monday, June 21, 2027, in ISO week 25.
- How many days until Summer Solstice?
- 270 days. See the live Summer Solstice countdown.
Weeks until other dates
Summer Solstice in other units
All week countdowns · Weeks left in 2026 · Day of the year · Date calculator