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The last full moon of 2025, the Full Cold Moon, rises on December 4, 2025, at 6:14 PM EST at 13°03 Gemini.
Full moons point to zodiac polarities, as the sign the full moon falls in is always in opposition to the sign the sun is shining through.
Come Thursday, we have the sun in arrows-to-the-wind Sagittarius facing off against the moon in collect-and-disseminate Gemini. This is the axis of words and wisdom, talking s—t and making moves. It’s text threads, tap shoes, and an ever-present desire to be mind-blown.
Speaking of the mind, we can think of the Gemini/Sagittarius axis as the two hemispheres of the brain.
The left hemisphere (Gemini) is analytical, focused on exchange, and the collection of information. In essence, Gemini wants to know. The right hemisphere (Sagittarius) creates meaning from the messaging and seeks to integrate knowledge into shared wisdom and meaningful action. In essence, Sagittarius wants to do.
At worst, Gemini is caught up in the current of the innocuous, obsessed with knowing everything at the expense of understanding nothing. And the shadow side of Sagittarius is blunt, rhetorically rigid, and obtusely optimistic.
Full Moon December 2025
This full moon rounds out the holy trinity of super moons that have graced us over the past few months. What makes the Cold Supermoon even more interesting is that it is classified as a Major Lunar Standstill. This rare phenomenon causes the moon to climb to particularly lofty heights.
Look up my babies as the December 4 supermoon will appear brighter, closer, and higher overhead than usual, and we won’t get another of this caliber until 2042.
Get it while you can.
We can see the great heights of this full moon as a metaphor for vantage, offering a wide-angle view to observe the year that’s been and look forward to the journey ahead, recognizing that we are both infinite and infinitesimal.
Full moon in Gemini December 2025
In terms of planetary power playing, the full moon in Gemini will oppose Venus, our planet of pleasure, and Mars, our planet of will, both stringing bows and striking up the band in the sign of Sagittarius.
This opposition highlights the push and pull between a desire to cultivate comfort and a deep need for relationships that reflect and support the elasticity of our becoming. What is a container for the static, and what is the midwife of the wild?
If it doesn’t make you want to howl, guzzle mead, beat your chest like the drum that it was born to be, tear at your hair, and burn your clothes once in a while, it probably ain’t for you for the long haul.
Who will be most affected by the full moon in Gemini?
Because this full moon is rising and shining in mutable Gemini, the mutable signs Gemini, Virgo, Sagittarius and Pisces will feel the effects of this culmination most acutely.
Cold Moon meaning
Per the Farmers’ Almanac, December’s full moon is known colloquially as the Cold Moon. Attributed to the Mohawk, the name evokes the frigid conditions that fall across the Northern Hemisphere at this time of year.
The chill is more pronounced in the Chinese name for this lunation, which doubles as a potential T. Swift breakup ballad: “Bitter Moon.”
December’s full moon is also known as the Long Night Moon, as it rises near the “longest night of the year”— the Winter Solstice — when the dark is at its darkest and most enduring, allowing the moon to burn brighter and longer.
The limited presence of the sun around the solstice led the Zuni tribe to poetically refer to December’s full moon as the “sun has traveled home to rest” moon.
When is the next full moon?
The next full moon and the very first of 2026 will be the full Wolf Moon in Cancer — rising, shining, and side-stepping on Saturday, January 3, 2026, at 10:00 am EST.
Under the light of this full moon, vague becomes vulgar to you, Gemini. A relationship that you’re struggling to muster bluster for? A job that numbs the mind but pads the pocket? Be gone.
While deflection is typically your most tried and true defense, you are now being called to either commit or quit.
Chin up, and pony up, my dudes.
Ahoy,Virgo! The opposition of this full moon splits the difference between your fourth house of family and foundation (Sagittarius) and your tenth house of career and legacy (Gemini).
Have you been using the obligations of the latter as an excuse to escape the demands of the former?
Are you “fixing” AKA hyperfixating/micromanaging work toil while letting emotional labor go untended?
I urge you to consider where you are essential and where you are expendable. Invest your time accordingly.
The full moon in Gemini throws a light on your seventh house of trusted partnership, Sagittarius, putting your commitment issues into stark relief.
You are the zodiac sign voted most likely to resist being “tied down,” yet your “need for freedom” is likely more about fear than true liberation. Add to it that your side-stepping and eye-rolling philosophizing amounts to an emotional hostage situation for anyone trying to get close to you.
If you need to walk the road alone a la Whitesnake, respect, but don’t drag a lover in a sidekick sidecar.
Be brave and be all in, whether solo or paired.
The Full moon in Gemini activates your fourth house of origin, Pisces. Where have you been evading the uncomfortable truth in service of the quiet dissatisfaction of the status quo?
The opposition between the moody moon and warlord Mars demands healthy, honest expression.
Avoidant behavior not only delays the inevitable but amplifies it. This Mercury-ruled moon wants you to step up and speak up. Say no before you feel overwhelmed, and clearly state your boundaries lest they become battle ramparts.
Astrologer Reda Wigle researches and irreverently reports on planetary configurations and their effect on each zodiac sign. Her horoscopes integrate history, poetry, pop culture, and personal experience. To book a reading, visit her website.
