Waning · 88.0% lit · ♈︎ Aries 18°
Moon age
18.8days
Moon phase on August 31, 2026Waning Gibbous
On Monday, August 31, 2026, the Moon was a Waning Gibbous: 88.0% of its visible face lit, 18.8 days after the new moon and shrinking each night.
88.0%Illumination at noon UTC
18.8 dMoon age
379,205 km235,627 mi from Earth
♈︎ AriesMoon sign (19°)
31.5′Apparent size (arcmin)
WaningLit on the left (N. Hemisphere)
Nearest moon phases
The nearest full moon to August 31, 2026 is on Friday, August 28, 2026 at 04:19 UTC, 3 days earlier, and the nearest new moon is on Friday, September 11, 2026 at 03:27 UTC, 11 days later.
| Phase | Date | Time (UTC) |
|---|---|---|
| Full Moon (before) | Friday, August 28, 2026 | 04:19 |
| Last Quarter (after) | Friday, September 4, 2026 | 07:51 |
The Moon around August 31
More about this date
Monday, August 31, 2026 falls in the lunar cycle that runs from the new moon of August 12, 2026 to the new moon of September 11, 2026, a cycle of 29.41 days.
- See every phase of the month in the moon phases in August 2026, or the whole moon calendar 2026.
- The same date one year apart: 2025 · 2027.
- Born on this day? The moon phase on your birthday tool adds your birth time and your moon sign.
- Phases change by time zone: this page uses Coordinated Universal Time (UTC). Learn how to read the phases of the moon.