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Celtic Rituals for the Full Harvest Moon

Sep 25
5 min read

I am always fascinated by Celtic rituals and folklore, most likely because of my heritage and past lives. However, that fascination becomes more insistent during the "ber" months. When September hits and the leaves start showing their resplendent colors, that is when I am most drawn to all things Irish, Scottish and Welsh. I must have had some really fantastic past life experiences during that time in those places. Today, we will talk about my favorite moon phase. The Harvest Moon.


The Harvest Moon asks for a different kind of attention. It rises close to the autumn equinox, when the long light of summer gives way to cooler nights, stored food, and the quiet work of preparing for winter. On September 26, a full Harvest Moon becomes a natural moment to pause, give thanks, release what has run its course, and honor the land that carried the season.


Celtic-based ritual fits this moon well, as long as it is approached with care. There was never one single “Celtic religion” practiced the same way everywhere. Irish, Scottish, Welsh, Cornish, Manx, Breton, and Gaulish traditions all had their own places, languages, spirits, and customs. Many full moon practices used today are modern, inspired by folklore, seasonal festivals, and the living relationship between people and land. That sounds a lot like doing grounding, doesn't it? Grounding is something we should all practice on a regular basis.


The best rituals are honest. They do not pretend to recreate a fixed ancient ceremony. They draw from Celtic themes of reciprocity, harvest, fire, water, ancestors, poetry, and place. What does that mean? It means that when engaging in a ritual in today's times, draw from those ancestral themes, but also draw from your own heart and soul. If you listen, your soul will lead you.



The Harvest Moon is the full moon closest to the fall equinox. Its name comes from the old seasonal reality of harvest work. Around this time, the moon often rises soon after sunset for several evenings, giving extra light at the end of the day. For farming communities, that mattered.


In a Celtic-inspired spiritual practice, the Harvest Moon can carry three central themes.


Gratitude for what has grown


This includes food, work, relationships, healing, skill, courage, and lessons. Gratitude is not only a feeling here. It is an offering. It recognizes that life is shared between soil, rain, sun, animals, plants, ancestors, neighbors, and unseen forces.


Release after the season of growth


By late September, not everything can keep growing. Some plants go to seed. Some fields are cut back. Some fruit falls. This moon invites a gentle but honest question: What needs to be gathered, and what needs to be laid down?


Preparation for the dark half of the year


Celtic seasonal thinking often honors thresholds. The year turns through bright and dark, growth and rest, activity and reflection. A September Harvest Moon stands near that doorway. It is not yet winter, but the path has turned toward it.


How Will I Prepare My Space ?


A Celtic-based Harvest Moon ritual does not need to be elaborate. A kitchen table, porch step, garden corner, windowsill, or quiet patch of grass can become sacred when treated with care. I will be using my front steps because they get the most light from the full moon. It's where i put my moon water jar for every full moon.


It's important to understand that even if the moon is coverd by clouds, that cloud cover does not cancel the power of the moon.


For the Harvest Moon, I do more than just put out water and crystals, I also put out items that speak to the intent of the season. I will be adding cinnamon sticks for prosperity, fresh sage to chase away any low vibrating souls that might be lingering, a piece of copper to enhance the energy, and a bouquet of flowers to add sweetness to the dark months.


With that said, this is how I do the Harvest Moon. The items I use are representivee to my own intent and may not align with your own. When you do your ritual, make it uniquely yours. That's how magick works.


The same goes with what I do next, but I always encourage clients and students to start with cleansing breaths. It's no different when doing the Harvest Moon ritual, I just add a little more intent to the cleansing breaths.


Stand or sit comfortably. Take three slow breaths.


On the first breath, notice the ground beneath you.

On the second breath, notice the air around you.

On the third breath, notice the light of the moon, whether seen or unseen.


Now, speak from the heart. Thank the earth for the harvest...this is YOUR harvest...so it could be just that you had a lovely and satisfying summer. It does't have to be harvest as one would think. You sowed the seeds for your life, now thank the universe for those that grew and became reality. It is also a time to releease those things that no longer serve you. Let them go. Here are some examples:


  • “I release shame about resting.”

  • “I release the thought that this season was wasted.”

  • “I release comparison.”

  • "I release disappointment in what did not come to fruition."

  • "I release what no longer serves my soul journey."




Eye-level view of a handwritten release note beside a candle and autumn leaves.
Writing a release turns a private feeling into a clear choice.



Walk under the moon in silence


One of the most powerful rituals is also the least dramatic. Take a quiet walk after moonrise. Leave your phone behind if you safely can, or keep it tucked away.


As you walk, notice signs of seasonal change:


  • Dry leaves underfoot

  • Seeds, pods, and berries

  • Cooler air

  • Bird calls or evening insects

  • The smell of earth, rain, woodsmoke, or cut grass


Do not rush to interpret everything. Let the land speak in its own way.


At the end of the walk, pick up one fallen natural object, only if it is allowed and abundant. Bring it home for your altar. If you are in a protected area, take a photo or memory instead.


Lessons Learned...

What did you learn these past few months? You know, our souls are here to learn lessons but if you never reflect on them...what did you really learn?

Ask yourself these questions:


  • What did this season teach me?

  • What do I want to carry into winter?

  • What should not come with me?


Write the answers in a journal. Over time, these entries become a seasonal record of your life.


This wraps up my thoughts for today. I can tell you they were all written from my heart and soul in hopes of resonating with all of you. in some manner. Many blessings to each of you...


 
 
 

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2025 by Teresa Keefer

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