Moon Phases September 2031
Full Moon
1 September
Last Quarter
8 September
New Moon
16 September
First Quarter
24 September
Full Moon
30 September
Moon phase day by day
| Day | Phase | Illumination |
|---|---|---|
| 1 | Full Moon | 100% |
| 2 | Full Moon | 98% |
| 3 | Waning Gibbous | 94% |
| 4 | Waning Gibbous | 87% |
| 5 | Waning Gibbous | 80% |
| 6 | Waning Gibbous | 71% |
| 7 | Last Quarter | 61% |
| 8 | Last Quarter | 51% |
| 9 | Last Quarter | 42% |
| 10 | Last Quarter | 33% |
| 11 | Waning Crescent | 24% |
| 12 | Waning Crescent | 17% |
| 13 | Waning Crescent | 10% |
| 14 | Waning Crescent | 5% |
| 15 | New Moon | 2% |
| 16 | New Moon | 0% |
| 17 | New Moon | 1% |
| 18 | New Moon | 3% |
| 19 | Waxing Crescent | 8% |
| 20 | Waxing Crescent | 15% |
| 21 | Waxing Crescent | 23% |
| 22 | First Quarter | 33% |
| 23 | First Quarter | 44% |
| 24 | First Quarter | 56% |
| 25 | First Quarter | 67% |
| 26 | Waxing Gibbous | 77% |
| 27 | Waxing Gibbous | 86% |
| 28 | Waxing Gibbous | 93% |
| 29 | Full Moon | 98% |
| 30 | Full Moon | 100% |
Illumination at noon (UTC) for each day.
Frequently asked questions
When is the full moon in September 2031?
The full moon in September 2031 is on 1 September.
When is the new moon in September 2031?
The new moon in September 2031 is on 16 September.