September 2025 Moon Phase Update: What’s Happening in the Sky Tonight?

Happy Monday and a joyful Labor Day to everyone! I trust you had a fulfilling weekend and appreciated the recent lunar transition. As of yesterday, the moon has moved past the first quarter and into the waxing gibbous phase. This stage is noted by the moon being over 50% lit by the sun and continues to brighten daily. This phase will persist until the upcoming full moon on September 7.

Let’s dive into what you need to know about the current lunar phase, including its meaning and the impact it has astrologically.

Lunar Update: September 1, 2025

The moon today is at the waxing gibbous phase, showing 64% illumination. Note that the illumination percentage can fluctuate by about 10% each day. Currently, the moon is 8.7 days into the 29.53-day lunar cycle.

Moongiant explains, “During the waxing gibbous phase, the moon appears in the eastern sky by mid-afternoon and is positioned high in the east at sunset. The term ‘gibbous’ dates back to the 14th century, deriving from the Latin ‘gibbosus,’ which means humpbacked.”

At present, the moon looks like a growing semicircle from our perspective on Earth.

Understanding the Waxing Gibbous Phase

The waxing gibbous moon marks the fourth phase of the lunar cycle, following directly after the first quarter moon. This phase sees the moon’s illumination increase from 50% to full illumination on the full moon day. This phase usually lasts about seven days.

The Kopernik Observatory notes, “This phase is just one step away from the full moon phase, where the sun, Earth, and moon align straight. As this phase approaches, the gravitational pull from the sun and moon amplifies, enlarging the bulge of Earth’s tides, culminating in the spring tide.”

The waxing gibbous moon typically rises around 3 p.m. and sets around 3 a.m.

Waxing Gibbous Moon Positioned in Sagittarius

The waxing gibbous moon currently finds itself in the zodiac sign of Sagittarius, known for its philosophical outlook and spirited nature.

AstroSeek describes those with the moon in Sagittarius: “There’s a continuous need to seek something significant. For a sense of security, it might be essential to have an objective, mission, or philosophy that infuses life with meaning. With the moon in this sign, you’re naturally optimistic, holding a belief that situations will improve even when challenges arise.”

Today, tap into your adventurous spirit. Consider embarking on a solo adventure, explore your city with fresh eyes, or introduce a new twist to your daily routine. Engage in learning, embrace diverse viewpoints, initiate conversations with strangers about their philosophies, and stretch your social skills.

Symbolic Meaning of the Waxing Gibbous Moon

The waxing gibbous moon carries significant spiritual symbolism, representing a period of action and final efforts before the full moon arrives.

Emma Lycett, also known as The Ritual Witch, a yoga instructor, moon manifestor, and spiritual coach, suggests in her book Mystical Moon Rituals, “Your task this week is to embrace opportunities that align with your dreams and desires. You may find that chances begin to surface, meaningful discussions occur, or propositions come your way. This isn’t a moment for hesitation or delay; it’s a moment to affirmatively say YES!”