The Full Moon in August 2025 will occur on Saturday, August 9. This Full Moon is traditionally called the Sturgeon Moon[4][5]. Times for the Full Moon may vary slightly depending on your region: in the United States and London, it is listed as occurring in the morning hours, at 8:54-8:55 AM local time[2][5], and at 3:55 a.m. Eastern Time in the U.S.[4].
This Full Moon marks the mid-point of August’s lunar cycle. It comes after the First Quarter phase (August 2), and is followed by the Waning Gibbous phase[6][7]. The corresponding New Moon for August 2025 will be on August 23[2].
The August Full Moon is widely known as the Sturgeon Moon, a name derived from North American fishing tribes, as this was the time of year when sturgeon—a large fish of the Great Lakes and other major bodies of water—were most readily caught[4]. This naming tradition continues in many astronomical calendars.
Key astronomical and cultural notes about the August 2025 Full Moon:
- Date: August 9, 2025
- Time (UK/Western Europe): 8:54–8:55 AM local time[2][5]
- Time (US Eastern): 3:55 AM ET[4]
- Moon Phase: Full Moon (Sturgeon Moon)
- Next Major Phase: New Moon on August 23, 2025[2]
Observing conditions: Check your local time zone for precise moonrise and moonset times. If you are interested in aurora viewing, be aware that the Full Moon’s brightness can make faint auroras more difficult to see[6].
References
- [1] August 2025 Moon Phases (Lunar Calendar) – Calendarr
- [2] Lunar calendar for August 2025 – OM Journal
- [3] Moon Phase calendar for the current month of August 2025 – MoonGiant.com
- [4] 2025 Full Moon calendar: When to see the Full Moon and phases – Astronomy.com
- [5] When Is The Next full Moon? Full Moon Calendar 2025 – Royal Museums Greenwich
- [6] Moon Phases Calendar – August 2025 | SpaceWeatherLive.com
- [7] Moon Phases August 2025 – Calendar-12.com
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