Moon · September 2025
Moon calendar for Portland, Oregon, United States: September 2025
Daily moon phases, illumination, moonrise and moonset in Portland, Oregon, United States for September 2025. Full moon: September 7, 2025. All times are shown in the local time of Portland, Oregon, 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% | 4:12 PM | 12:02 AM |
| 2 | Waxing Gibbous | 74% | 4:51 PM | 12:46 AM |
| 3 | Waxing Gibbous | 82% | 5:37 PM | 1:53 AM |
| 4 | Waxing Gibbous | 89% | 6:13 PM | 3:10 AM |
| 5 | Waxing Gibbous | 95% | 6:26 PM | 4:18 AM |
| 6 | Waxing Gibbous | 99% | 6:52 PM | 5:35 AM |
| 7 | Full Moon | 100% | 7:28 PM | 6:37 AM |
| 8 | Waning Gibbous | 99% | 7:38 PM | 8:06 AM |
| 9 | Waning Gibbous | 95% | 7:53 PM | 9:32 AM |
| 10 | Waning Gibbous | 89% | 8:19 PM | 10:33 AM |
| 11 | Waning Gibbous | 80% | 8:32 PM | 12:12 PM |
| 12 | Waning Gibbous | 70% | 9:25 PM | 1:38 PM |
| 13 | Last Quarter | 58% | 10:03 PM | 2:57 PM |
| 14 | Last Quarter | 47% | 11:03 PM | 4:12 PM |
| 15 | Waning Crescent | 35% | — | 5:13 PM |
| 16 | Waning Crescent | 25% | 12:20 AM | 6:02 PM |
| 17 | Waning Crescent | 16% | 1:36 AM | 6:18 PM |
| 18 | Waning Crescent | 9% | 2:48 AM | 6:30 PM |
| 19 | Waning Crescent | 4% | 4:14 AM | 6:56 PM |
| 20 | New Moon | 1% | 5:33 AM | 7:26 PM |
| 21 | New Moon | 0% | 6:26 AM | 7:34 PM |
| 22 | Waxing Crescent | 1% | 7:39 AM | 7:41 PM |
| 23 | Waxing Crescent | 4% | 8:33 AM | 8:04 PM |
| 24 | Waxing Crescent | 9% | 9:47 AM | 8:21 PM |
| 25 | Waxing Crescent | 15% | 10:49 AM | 8:37 PM |
| 26 | Waxing Crescent | 22% | 12:00 PM | 9:28 PM |
| 27 | Waxing Crescent | 30% | 1:06 PM | 9:54 PM |
| 28 | Waxing Crescent | 39% | 2:01 PM | 10:37 PM |
| 29 | First Quarter | 49% | 2:42 PM | 11:42 PM |
| 30 | First Quarter | 59% | 3:36 PM | — |
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Frequently asked questions
When is the full moon in September 2025 in Portland, Oregon, 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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