# August-September 2026 Moon Phases: Cultural and Scientific > Live situation record from CLSTR: https://clstr.news/situations/august-2026-moon-phase-calendar > Updated: 2026-09-19T09:00:00.000Z. Sources: 22. Developments: 15. The August-September 2026 lunar cycle continues to be tracked through both cultural beauty practices and scientific astronomical monitoring. A lunar calendar released in late July 2026 provides guidance for beauty treatments based on moon phases. It suggests cutting hair during the waxing period (20–27 August) to encourage growth, while the waning phases (1–5 August and 29–31 August) are recommended to maintain hair length. These practices, rooted in astrology and biodynamic agriculture, are circulated in English and Spanish and are followed by millions despite a lack of scientific evidence. Astrological observations for the mid-month period noted the Moon entering its waxing crescent phase in Libra on 14 August. This transit is associated with themes of balance, harmony, and personal connections. Concurrent scientific observations from NASA and the National Institute of Meteorology (Inmet) track the Moon's physical progression. Following a New Moon on 12 August, the Moon transitioned into a waxing crescent phase. By 20 August, the Moon reached its First Quarter phase, followed by the Waxing Gibbous phase on 21 August. Data from Inmet indicates the Full Moon phase began on 28 August. This coincided with a partial lunar eclipse observed between the night of 27 August and the early morning of 28 August; at the peak of the eclipse at 01:13 Brasília time, approximately 96.2% of the lunar disk was within the Earth's umbra. By 31 August, the Moon was in a Waning Gibbous phase in Aries with approximately 86% illumination. In early September, the Moon entered a waning crescent phase. On 7 September, illumination was approximately 18%, allowing for the naked-eye observation of the Aristarchus Plateau. By 9 September, illumination decreased to between 3% and 4.65%. In mid-September, the Moon entered a New Moon phase. On 15 September, visibility was approximately 16%, increasing to 33% by 17 September. ## Claims - The Moon is in the Waxing Crescent phase on September 13, 2026. (corroborated by 2 sources) - The lunar cycle lasts approximately 29.5 days. (corroborated by 2 sources) - The next Full Moon will occur on September 26, 2026. (corroborated by 2 sources) - On September 13, 2026, the Moon's illumination is between 5% and 8%. (single source) - The Moon's age on September 13, 2026, is approximately 2.62 days. (single source) ## Timeline ### 2026-09-19: Moon enters waxing crescent phase on September 19, 2026 The Moon enters its waxing crescent phase on September 19, 2026, offering high-clarity astronomical viewing and influencing tidal patterns alongside global climate factors. 2 sources. https://clstr.news/cluster/moon-enters-waxing-crescent-phase-on-september-19-2026 ### 2026-09-15: Moon enters New Moon phase in September 2026 The Moon is in its New Moon phase in mid-September 2026, with a transition to the Waxing Moon phase expected on September 18. 2 sources. https://clstr.news/cluster/moon-enters-new-moon-phase-in-september-2026 ### 2026-09-12: Moon phase for September 13, 2026, is Waxing Crescent On September 13, 2026, the Moon enters the Waxing Crescent phase with approximately 5% to 8% illumination, following the New Moon. The next Full Moon is scheduled for September 26. 3 sources. https://clstr.news/cluster/moon-phase-for-september-13-2026-is-waxing-crescent ### 2026-09-07: Moon phase transitions in early September 2026 In early September 2026, the Moon enters a waning crescent phase, with illumination decreasing toward a new moon and offering opportunities to view lunar surface features. 3 sources. https://clstr.news/cluster/moon-phase-transitions-through-waning-crescent-in-early-september-2026 ### 2026-09-05: Moon enters Waning Crescent phase in Cancer The Moon enters a Waning Crescent phase in Cancer on September 6-7, 2026, featuring a trine to Neptune that emphasizes intuition and reflection. 2 sources. https://clstr.news/cluster/moon-enters-waning-crescent-phase-in-cancer ### 2026-08-31: Full Moon phase observed on August 31, 2026 The Moon is in its Full Moon phase as of August 31, 2026, following a partial lunar eclipse that occurred on August 28. 5 sources. https://clstr.news/cluster/full-moon-phase-observed-on-august-31-2026 ### 2026-08-28: Moon enters Waning Gibbous phase The Moon is in a Waning Gibbous phase, with illumination decreasing nightly as it moves toward the next New Moon. 3 sources. https://clstr.news/cluster/moon-enters-waning-gibbous-phase ### 2026-08-24: Moon enters Waxing Gibbous phase ahead of August 28 Full Moon The Moon is in its Waxing Gibbous phase ahead of a Full Moon on August 28, offering high visibility for observing lunar craters and seas. 2 sources. https://clstr.news/cluster/moon-enters-waxing-gibbous-phase-ahead-of-august-28-full-moon ### 2026-08-20: Moon lunar cycle progresses toward Full Moon on August 28 The Moon is transitioning from its First Quarter phase to a Waxing Gibbous phase, heading toward a Full Moon on August 28. 2 sources. https://clstr.news/cluster/moon-lunar-cycle-progresses-toward-full-moon-on-august-28 ### 2026-08-17: Moon enters waxing crescent phase in August 2026 The Moon is currently in its waxing crescent phase in mid-August 2026, with increasing illumination leading toward a Full Moon on August 28. 4 sources. https://clstr.news/cluster/moon-enters-waxing-crescent-phase ### 2026-08-14: Moon enters waxing crescent phase in Libra on August 14 On August 14, 2026, the Moon enters a waxing crescent phase in Libra, a period associated with diplomacy, social connections, and personal balance. 4 sources. https://clstr.news/cluster/moon-enters-waxing-crescent-phase-in-libra-on-august-14 ### 2026-08-14: Moon phase for August 14 is a Waxing Crescent The Moon is currently in a Waxing Crescent phase with 3% visibility, according to NASA data, with the next Full Moon scheduled for August 28. 3 sources. https://clstr.news/cluster/moon-phase-for-august-14-is-a-waxing-crescent ### 2026-08-09: Moon phase for August 9 enters Waning Crescent stage On August 9, the Moon is in a Waning Crescent phase with 16% visibility. The next Full Moon is expected on August 28. 4 sources. https://clstr.news/cluster/moon-phase-for-august-9-enters-waning-crescent-stage ### 2026-08-01: Moon in Waning Gibbous Phase on August 1 On August 1 the Moon is in a waning gibbous phase (≈93% illuminated). Key lunar features remain visible, and the next full Moon will occur on August 28. 5 sources. https://clstr.news/cluster/moon-in-waning-gibbous-phase-on-august-1 ### 2026-07-29: Moon’s August 2026 Phases Guide Hair‑cutting and Beauty Dates The August 2026 lunar calendar lists Moon phases and recommends hair‑cutting dates: waxing (20‑27 Aug) for growth, waning (1‑5 Aug, 29‑31 Aug) to maintain cuts, with no scientific proof of effect. 2 sources. https://clstr.news/cluster/august-2026-lunar-calendar-guides-haircutting-and-beauty-dates --- Cite as: August-September 2026 Moon Phases: Cultural and Scientific. CLSTR, https://clstr.news/situations/august-2026-moon-phase-calendar