Moon · September 2025
Moon calendar for Hayward, California, United States: September 2025
Daily moon phases, illumination, moonrise and moonset in Hayward, California, United States for September 2025. Full moon: September 7, 2025. All times are shown in the local time of Hayward, California, United States.
Full moonSunday, September 7, 2025, 12:53 PM
New moonSunday, September 21, 2025, 9:49 AM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waxing Gibbous | 65% | 3:37 PM | 12:24 AM |
| 2 | Waxing Gibbous | 74% | 4:23 PM | 1:31 AM |
| 3 | Waxing Gibbous | 82% | 5:19 PM | 2:21 AM |
| 4 | Waxing Gibbous | 89% | 5:42 PM | 3:33 AM |
| 5 | Waxing Gibbous | 95% | 6:21 PM | 4:25 AM |
| 6 | Waxing Gibbous | 99% | 6:34 PM | 5:38 AM |
| 7 | Full Moon | 100% | 7:25 PM | 6:41 AM |
| 8 | Waning Gibbous | 99% | 7:39 PM | 7:59 AM |
| 9 | Waning Gibbous | 95% | 8:12 PM | 9:22 AM |
| 10 | Waning Gibbous | 89% | 8:27 PM | 10:22 AM |
| 11 | Waning Gibbous | 80% | 9:23 PM | 11:38 AM |
| 12 | Waning Gibbous | 70% | 9:46 PM | 12:57 PM |
| 13 | Last Quarter | 58% | 10:29 PM | 2:17 PM |
| 14 | Last Quarter | 47% | 11:40 PM | 3:33 PM |
| 15 | Waning Crescent | 35% | — | 4:22 PM |
| 16 | Waning Crescent | 25% | 12:42 AM | 5:22 PM |
| 17 | Waning Crescent | 16% | 2:09 AM | 5:43 PM |
| 18 | Waning Crescent | 9% | 3:29 AM | 6:19 PM |
| 19 | Waning Crescent | 4% | 4:24 AM | 6:31 PM |
| 20 | New Moon | 1% | 5:36 AM | 7:15 PM |
| 21 | New Moon | 0% | 6:27 AM | 7:32 PM |
| 22 | Waxing Crescent | 1% | 7:37 AM | 7:43 PM |
| 23 | Waxing Crescent | 4% | 8:27 AM | 8:15 PM |
| 24 | Waxing Crescent | 9% | 9:36 AM | 8:27 PM |
| 25 | Waxing Crescent | 15% | 10:26 AM | 9:16 PM |
| 26 | Waxing Crescent | 22% | 11:36 AM | 9:39 PM |
| 27 | Waxing Crescent | 30% | 12:25 PM | 10:22 PM |
| 28 | Waxing Crescent | 39% | 1:34 PM | 11:26 PM |
| 29 | First Quarter | 49% | 2:20 PM | — |
| 30 | First Quarter | 59% | 3:08 PM | 12:14 AM |
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Frequently asked questions
When is the full moon in September 2025 in Hayward, California, United States?
The full moon peaks on Sunday, September 7, 2025, 12:53 PM (local time).
When is the new moon in September 2025?
The new moon falls on Sunday, September 21, 2025, 9:49 AM (local time) — the darkest nights of the month, best for stargazing.
Data: Meeus astronomical algorithms. How we calculate this
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