Moon · May 2025
Moon calendar for Ontario, California, United States: May 2025
Daily moon phases, illumination, moonrise and moonset in Ontario, California, United States for May 2025. Full moon: May 12, 2025. All times are shown in the local time of Ontario, California, United States.
Full moonMonday, May 12, 2025, 12:11 PM
New moonMonday, May 26, 2025, 5:45 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Crescent | 21% | 8:30 AM | — |
| 2 | Waxing Crescent | 31% | 9:45 AM | 12:44 AM |
| 3 | First Quarter | 41% | 10:53 AM | 1:38 AM |
| 4 | First Quarter | 52% | 12:10 PM | 2:20 AM |
| 5 | Waxing Gibbous | 62% | 1:18 PM | 2:58 AM |
| 6 | Waxing Gibbous | 72% | 2:16 PM | 3:30 AM |
| 7 | Waxing Gibbous | 80% | 3:16 PM | 3:38 AM |
| 8 | Waxing Gibbous | 87% | 4:11 PM | 4:11 AM |
| 9 | Waxing Gibbous | 93% | 5:03 PM | 4:23 AM |
| 10 | Waxing Gibbous | 97% | 5:54 PM | 4:44 AM |
| 11 | Full Moon | 99% | 6:45 PM | 5:30 AM |
| 12 | Full Moon | 100% | 7:48 PM | 5:48 AM |
| 13 | Waning Gibbous | 99% | 8:40 PM | 6:23 AM |
| 14 | Waning Gibbous | 96% | 9:44 PM | 7:21 AM |
| 15 | Waning Gibbous | 91% | 10:31 PM | 8:00 AM |
| 16 | Waning Gibbous | 85% | 11:36 PM | 8:52 AM |
| 17 | Waning Gibbous | 76% | — | 9:59 AM |
| 18 | Waning Gibbous | 67% | 12:19 AM | 11:14 AM |
| 19 | Last Quarter | 56% | 12:43 AM | 12:16 PM |
| 20 | Last Quarter | 45% | 1:34 AM | 1:30 PM |
| 21 | Waning Crescent | 34% | 1:55 AM | 2:22 PM |
| 22 | Waning Crescent | 23% | 2:26 AM | 3:35 PM |
| 23 | Waning Crescent | 14% | 2:49 AM | 4:33 PM |
| 24 | Waning Crescent | 7% | 3:35 AM | 5:57 PM |
| 25 | Waning Crescent | 2% | 4:04 AM | 7:26 PM |
| 26 | New Moon | 0% | 4:30 AM | 8:24 PM |
| 27 | New Moon | 1% | 5:35 AM | 9:38 PM |
| 28 | Waxing Crescent | 4% | 6:24 AM | 10:32 PM |
| 29 | Waxing Crescent | 10% | 7:36 AM | 11:36 PM |
| 30 | Waxing Crescent | 17% | 8:30 AM | — |
| 31 | Waxing Crescent | 26% | 9:47 AM | 12:19 AM |
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Frequently asked questions
When is the full moon in May 2025 in Ontario, California, United States?
The full moon peaks on Monday, May 12, 2025, 12:11 PM (local time).
When is the new moon in May 2025?
The new moon falls on Monday, May 26, 2025, 5:45 PM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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