Moon · August 2026
Moon calendar for Ontario, California, United States: August 2026
Daily moon phases, illumination, moonrise and moonset in Ontario, California, United States for August 2026. Full moon: August 28, 2026. All times are shown in the local time of Ontario, California, United States.
Full moonFriday, August 28, 2026, 12:00 AM
New moonWednesday, August 12, 2026, 8:40 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waning Gibbous | 90% | 9:31 PM | 9:26 AM |
| 2 | Waning Gibbous | 83% | 9:42 PM | 10:18 AM |
| 3 | Waning Gibbous | 74% | 10:20 PM | 11:30 AM |
| 4 | Waning Gibbous | 64% | 10:34 PM | 12:23 PM |
| 5 | Last Quarter | 52% | 11:33 PM | 1:37 PM |
| 6 | Last Quarter | 41% | — | 2:44 PM |
| 7 | Waning Crescent | 30% | 12:14 AM | 4:09 PM |
| 8 | Waning Crescent | 19% | 1:08 AM | 5:26 PM |
| 9 | Waning Crescent | 11% | 2:13 AM | 6:16 PM |
| 10 | Waning Crescent | 5% | 3:29 AM | 7:07 PM |
| 11 | New Moon | 1% | 4:26 AM | 7:39 PM |
| 12 | New Moon | 0% | 5:43 AM | 8:19 PM |
| 13 | Waxing Crescent | 2% | 6:49 AM | 8:34 PM |
| 14 | Waxing Crescent | 6% | 8:05 AM | 9:26 PM |
| 15 | Waxing Crescent | 12% | 9:15 AM | 9:36 PM |
| 16 | Waxing Crescent | 19% | 10:12 AM | 10:12 PM |
| 17 | Waxing Crescent | 28% | 11:20 AM | 10:26 PM |
| 18 | Waxing Crescent | 37% | 11:20 AM | 11:20 PM |
| 19 | First Quarter | 47% | 1:24 PM | 11:41 PM |
| 20 | First Quarter | 57% | 2:11 PM | — |
| 21 | Waxing Gibbous | 66% | 3:03 PM | 12:23 AM |
| 22 | Waxing Gibbous | 74% | 3:48 PM | 1:27 AM |
| 23 | Waxing Gibbous | 82% | 4:28 PM | 2:11 AM |
| 24 | Waxing Gibbous | 89% | 5:29 PM | 3:10 AM |
| 25 | Waxing Gibbous | 94% | 5:49 PM | 4:05 AM |
| 26 | Waxing Gibbous | 98% | 6:24 PM | 5:06 AM |
| 27 | Full Moon | 100% | 6:43 PM | 6:04 AM |
| 28 | Full Moon | 100% | 7:31 PM | 7:07 AM |
| 29 | Waning Gibbous | 97% | 7:43 PM | 8:07 AM |
| 30 | Waning Gibbous | 93% | 8:20 PM | 9:17 AM |
| 31 | Waning Gibbous | 86% | 8:32 PM | 10:16 AM |
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Frequently asked questions
When is the full moon in August 2026 in Ontario, California, United States?
The full moon peaks on Friday, August 28, 2026, 12:00 AM (local time).
When is the new moon in August 2026?
The new moon falls on Wednesday, August 12, 2026, 8:40 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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