New Moon Sept 2025. 🌑 take a peek to find out when the new moon (marking new beginnings) or full moon (marking culminations and turning points) are. This month will begin on monday, september 1 st with a phase that will be illuminated.

Below are the moon phases for 2025 including the new, first quarter, full, and last quarter for each month. Above you can see our calendar of moon phases for september 2025.