Moon · September 2026
Moon calendar for Santa Rosa, California, United States: September 2026
Daily moon phases, illumination, moonrise and moonset in Santa Rosa, California, United States for September 2026. Full moon: September 26, 2026. All times are shown in the local time of Santa Rosa, California, United States.
Full moonSaturday, September 26, 2026, 2:33 PM
New moonThursday, September 10, 2026, 5:45 PM
| Day | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|
| 1 | Waning Gibbous | 77% | 9:35 PM | 11:49 AM |
| 2 | Waning Gibbous | 67% | 10:12 PM | 1:21 PM |
| 3 | Last Quarter | 56% | 10:48 PM | 2:23 PM |
| 4 | Last Quarter | 44% | 11:52 PM | 3:39 PM |
| 5 | Waning Crescent | 33% | — | 4:31 PM |
| 6 | Waning Crescent | 22% | 1:11 AM | 5:35 PM |
| 7 | Waning Crescent | 13% | 2:21 AM | 6:15 PM |
| 8 | Waning Crescent | 6% | 3:39 AM | 6:33 PM |
| 9 | Waning Crescent | 2% | 4:44 AM | 7:25 PM |
| 10 | New Moon | 0% | 6:10 AM | 7:36 PM |
| 11 | New Moon | 1% | 7:25 AM | 8:04 PM |
| 12 | Waxing Crescent | 4% | 8:22 AM | 8:22 PM |
| 13 | Waxing Crescent | 9% | 9:33 AM | 8:41 PM |
| 14 | Waxing Crescent | 15% | 10:24 AM | 9:30 PM |
| 15 | Waxing Crescent | 23% | 11:35 AM | 9:47 PM |
| 16 | Waxing Crescent | 31% | 12:25 PM | 10:25 PM |
| 17 | First Quarter | 40% | 1:34 PM | 11:27 PM |
| 18 | First Quarter | 50% | 2:21 PM | — |
| 19 | First Quarter | 59% | 3:22 PM | 12:10 AM |
| 20 | Waxing Gibbous | 68% | 3:45 PM | 1:08 AM |
| 21 | Waxing Gibbous | 77% | 4:23 PM | 2:05 AM |
| 22 | Waxing Gibbous | 84% | 4:43 PM | 3:11 AM |
| 23 | Waxing Gibbous | 91% | 5:31 PM | 4:10 AM |
| 24 | Waxing Gibbous | 96% | 5:41 PM | 5:20 AM |
| 25 | Waxing Gibbous | 99% | 6:13 PM | 6:16 AM |
| 26 | Full Moon | 100% | 6:26 PM | 7:29 AM |
| 27 | Waning Gibbous | 99% | 6:53 PM | 8:22 AM |
| 28 | Waning Gibbous | 95% | 7:34 PM | 9:36 AM |
| 29 | Waning Gibbous | 89% | 8:05 PM | 10:24 AM |
| 30 | Waning Gibbous | 81% | 8:34 PM | 12:10 PM |
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Frequently asked questions
When is the full moon in September 2026 in Santa Rosa, California, United States?
The full moon peaks on Saturday, September 26, 2026, 2:33 PM (local time).
When is the new moon in September 2026?
The new moon falls on Thursday, September 10, 2026, 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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