The best days to cut your hair for growth in September 2026 are September 23, 24, 25 and 26. The full moon on September 26 is the strongest cutting day of the month, and unlike August it is not an eclipse, so the usual rules apply. The growth window runs September 12 through 26. September 7 through 11 is for rest, oil and masks rather than scissors.

this page is the permanent calendar. it is updated at the start of every month, so you can keep it rather than hunt for a new one.

This month at a glance

New moon, September 11. Rest, intention, no cutting.
First quarter, September 18. A strong, decisive cutting day.
Full moon, September 26 at 16:49 UTC. The Harvest Moon, and the peak cutting day of the month.
Last quarter, October 4. The release, and the start of the maintenance window.

For the full month broken down week by week, read the September 2026 lunar hair calendar. For the month just closing, including why both of its turning points were eclipses, read the August 2026 calendar.

How lunar hair timing actually works

The method is older than any of us and simpler than most people expect. You cut during the waxing moon, the stretch between new and full, when lunar energy is building. Hair cut in that window is said to return thicker and faster. You cut during the waning moon, between full and new, when you want the opposite: to slow regrowth, hold a shape, tidy ends you do not want back quickly.

The full moon is the peak. Every tradition that keeps a lunar calendar treats it as the strongest day of the month for growth. The new moon is the floor, and it asks for rest rather than scissors.

The one exception: eclipses

When a new or full moon is also an eclipse, the usual guidance does not apply. Traditional practice treats eclipse days as days to leave hair alone entirely, which matters because an eclipse full moon would otherwise look like the best cutting day of its month.

That is exactly what happened in August 2026, when both turning points were eclipses. We wrote about it separately in can you cut your hair during an eclipse.

What to do on the rest days

The days the calendar tells you not to cut are not empty days. They are the ones that make the cutting days worth having. Warm oil worked through the scalp, a long mask, a loose braid, an early night. If you want the nightly version of this, the rosemary oil ritual is built around the same rhythm.

Every month of 2026

Each month has its own full breakdown, and this page always points at the current one.

• September 2026, the Harvest Moon, no eclipses, a clean growth window
• August 2026, both turning points eclipsed, a month for restraint
• July 2026

Frequently asked questions

What are the best days to cut your hair for growth in September 2026?

September 23, 24, 25 and 26. The full moon on September 26 is the single strongest day. The wider growth window runs September 12 through 26.

How does the lunar hair calendar work?

Cut during the waxing moon, between the new and full moon, for growth. Cut during the waning moon, between full and new, to slow regrowth and hold a shape. The full moon is the peak cutting day and the new moon is for rest.

What days should you not cut your hair?

The days leading into the new moon, and any day that carries an eclipse. Those are traditionally reserved for oil, masks and rest rather than scissors.

Does cutting your hair by the moon actually work?

It is a traditional practice rather than a clinical one, and there is no trial proving it. What it reliably does is give you a schedule, which means trims happen on a rhythm instead of whenever hair is already damaged. Consistency is doing much of the work.

Is this calendar updated?

Yes. This page is updated at the start of every month with the current dates, so the address stays the same and you can save it.

Save this page. The moon will keep its side of the arrangement.

With love from Bali,
Myrah