Hawaiʻi moon calendar
Every new and full moon for the next twelve months, and how many properly dark hours each of the next 30 nights actually has.
Next new moon
Sunday, November 8
The next full moon is Sunday, October 25.
For stargazing, the new moon is the date that matters. The nights around it are the darkest of the month, and the Milky Way only shows its structure without moonlight in the sky.
✉️ Sky-event email alerts
Next up: The Geminids peak, December 13. We send one email about three days before it, with the sky forecast from up on the mountain, and the same for the handful of other showers a year worth the drive. Nothing else, and one click to stop.
The next 30 nights, ranked honestly
Moonless hours count the astronomical dark with the moon below the horizon. It is the number to plan by, and it is not the same thing as a low percentage: a bright moon that sets early leaves more usable dark than a thin one that hangs there all night.
| Night | Moon | Moonless dark |
|---|---|---|
| Oct 19, 2026 | 67% | 3.8 h |
| Oct 20, 2026 | 76% | 2.9 h |
| Oct 21, 2026 | 84% | 2.0 h |
| Oct 22, 2026 | 91% | 1.1 h |
| Oct 23, 2026 | 96% | 0.2 h |
| Oct 24, 2026 | 99% | 0.0 h |
| Oct 25, 2026 | 100% | 0.0 h |
| Oct 26, 2026 | 98% | 0.0 h |
| Oct 27, 2026 | 93% | 0.2 h |
| Oct 28, 2026 | 86% | 1.2 h |
| Oct 29, 2026 | 77% | 2.3 h |
| Oct 30, 2026 | 66% | 3.4 h |
| Oct 31, 2026 | 55% | 4.5 h |
| Nov 1, 2026 | 44% | 5.5 h |
| Nov 2, 2026 | 33% | 6.5 h |
| Nov 3, 2026 | 23% | 7.4 h |
| Nov 4, 2026 | 15% | 8.3 h |
| Nov 5, 2026 | 8% | 9.2 h |
| Nov 6, 2026 | 4% | 10.1 hbest |
| Nov 7, 2026 | 1% | 10.2 hbest |
| Nov 8, 2026 | 0% | 10.2 hbest |
| Nov 9, 2026 | 1% | 10.2 hbest |
| Nov 10, 2026 | 4% | 10.2 hbest |
| Nov 11, 2026 | 9% | 9.6 h |
| Nov 12, 2026 | 15% | 8.7 h |
| Nov 13, 2026 | 23% | 7.8 h |
| Nov 14, 2026 | 31% | 6.9 h |
| Nov 15, 2026 | 40% | 6.1 h |
| Nov 16, 2026 | 49% | 5.2 h |
| Nov 17, 2026 | 59% | 4.4 h |
Computed for the Maunakea Visitor Station. Sunset and dark-hour times shift only minutes across the islands, so these nights hold statewide.
New and full moons, next twelve months
Exact instants, converted to Hawaiʻi time. A full moon rises around sunset and stays up all night; plan beach walks by it and stargazing away from it.
| Date | Phase |
|---|---|
| Oct 256:12 PM HST | Full moon |
| Nov 89:02 PM HST | New moon |
| Nov 244:54 AM HST | Full moon |
| Dec 82:52 PM HST | New moon |
| Dec 233:28 PM HST | Full moon |
| Jan 710:25 AM HST | New moon |
| Jan 222:17 AM HST | Full moon |
| Feb 65:56 AM HST | New moon |
| Feb 201:24 PM HST | Full moon |
| Mar 711:30 PM HST | New moon |
| Mar 2212:44 AM HST | Full moon |
| Apr 61:51 PM HST | New moon |
| Apr 2012:27 PM HST | Full moon |
| May 612:59 AM HST | New moon |
| May 2012:59 AM HST | Full moon |
| Jun 49:40 AM HST | New moon |
| Jun 182:45 PM HST | Full moon |
| Jul 35:02 PM HST | New moon |
| Jul 185:45 AM HST | Full moon |
| Aug 212:05 AM HST | New moon |
| Aug 169:29 PM HST | Full moon |
| Aug 317:41 AM HST | New moon |
| Sep 151:04 PM HST | Full moon |
| Sep 294:36 PM HST | New moon |
| Oct 153:47 AM HST | Full moon |
The full moon has a sting in its tail
About 8 to 10 days after each full moon, box jellyfish drift onto leeward and south-facing shores. The next window runs Nov 2 to Nov 4.
The box jellyfish calendarMoon phases and dark hours computed by this site with astronomy-engine for the Maunakea Visitor Station's coordinates. Independent project, affiliated with no observatory or agency.