August 13, 2025 – Tonight, the Moon casts a softer light as it enters the waning gibbous phase. About 79% of its surface is visible from Earth, revealing striking features such as the Tycho Crater, Mare Serenitatis, and Oceanus Procellarum—details often hidden during the brilliance of a full moon.
This night also marks the second evening of the Perseids meteor shower’s peak. Although the Moon’s glow may obscure some streaks, skywatchers can still expect to spot several meteors streaking across the darkened sky. Using binoculars, observers can also view the Clavius and Alphonsus craters, while a telescope will reveal sights like the Apollo 11 landing site and the Rima Ariadaeus.
Current Moon Phase and Cycle
The waning gibbous phase sits between the full moon and the last quarter. Today, the Moon is 18.3 days old, illuminated at 86%, and rises later each night.
According to NASA, the Moon completes its cycle in about 29.5 days, transitioning through eight distinct phases—New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent. These phases are caused by the shifting angles between the Sun, Moon, and Earth. While the same side always faces our planet, the visible light changes as the Moon orbits Earth.
During the waning gibbous stage, the Moon appears as a shrinking semicircle, best viewed in the early morning hours on the western horizon. NASA notes that the illuminated portion seems to diminish, but this is simply the Moon’s orbit carrying it further from the Sun’s direct light.
Astrological Influence – Moon in Pisces
Right now, the waning gibbous Moon is positioned in Pisces, a water sign associated with emotional depth, intuition, and creativity. Astrologers suggest that this is the perfect time for reflection, release, and inner healing. By tomorrow, the Moon will move into fiery Aries, bringing a shift toward bold action and new beginnings.
For those attuned to lunar energy, this phase is an opportunity to let go of burdens that no longer serve your growth—an intention often set during the full moon. Journal your thoughts, engage in creative expression, and trust your inner voice.
Symbolism of the Waning Gibbous
Spiritually, the waning gibbous is a time of restoration and release. It encourages freeing yourself from old habits, emotional pain, and relationships that hinder your progress. As the Moon sheds its light night by night, imagine releasing negativity along with it, sending grace and closure to the past.
With the waning gibbous Moon in Pisces and the Perseids meteor shower painting streaks across the night sky, August 13 offers a rare blend of cosmic beauty and emotional clarity—perfect for stargazing, reflection, and renewal.