Most of us glance up at the Moon and wonder what phase it’s in — but the answer isn’t always obvious from the shape alone. Tonight’s Moon is a Waning Gibbous, hovering at 98.9% illumination, just past the full stage and slowly shrinking toward the next quarter. This guide explains what that means, why the Moon may look orange, and what to expect from Ireland’s skies in the coming weeks.

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Current Moon Phase: Waning Gibbous ·
Illumination: 98.9% ·
Lunar Cycle Day: 15.73 of 29.5 ·
Next Full Moon (Ireland): May 31, 2026 ·
Next Third Quarter (Ireland): June 8, 2026

Quick snapshot

1Confirmed facts
2What’s unclear
  • Whether moon phase affects mood remains unresolved by science
  • Exact cause of orange moon depends on local atmospheric conditions
3Timeline signal
  • Tonight: Waning Gibbous visible in early morning
  • Next few days: Moon wanes toward Third Quarter
  • May 31, 2026: Full Moon visible in Ireland
4What’s next
  • Third Quarter Moon on June 8, 2026
  • New Moon approximately two weeks after third quarter
  • Check timeanddate.com for your Irish location

Six key details about tonight’s Moon, pulled directly from astronomical sources:

Label Value
Today’s Phase Waning Gibbous
Illumination 98.9%
Days Since New Moon 15.73
Next Full Moon (Ireland) May 31, 2026
Next Third Quarter (Ireland) June 8, 2026
Orange Moon Cause Atmospheric dust/scattering

What type of moon is tonight called?

The upshot

Even at 98.9% illumination, the Moon is officially Waning Gibbous — a phase that often confuses casual observers because it looks nearly full but is actually shrinking.

Current moon phase: Waning Gibbous

How to read a moon phase calendar

  • Moon phase calendars show eight main phases: new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last quarter, waning crescent (NASA Science).
  • To distinguish waning from waxing, check the illumination percentage: if it’s decreasing (e.g., full Moon → 99% → 95%), it’s waning. Most online tools like MoonGiant (lunar calendar) provide daily percentages.

The implication: A moon phase calendar helps you track the shrinking illumination night by night.

Why is the Moon orange tonight?

Atmospheric scattering and the orange effect

  • An orange Moon is caused by atmospheric particles (dust, pollution, moisture) scattering shorter blue wavelengths and letting longer red-orange wavelengths reach your eyes (Encyclopaedia Britannica (lunar astronomy)).
  • This is not a phase change — the Moon’s phase classification stays the same regardless of colour. It’s an optical effect most noticeable when the Moon is low on the horizon (Encyclopaedia Britannica (lunar astronomy)).

When to see an orange moon

  • Look shortly after moonrise or before moonset. In Ireland, a Waning Gibbous Moon rises later each night — check local times for your area.
What to watch

If the Moon appears especially red tonight, it may also be due to wildfire smoke or Saharan dust — events that have affected Irish skies in recent years. Your location and weather matter more than the lunar phase.

What this means: The orange color is purely atmospheric, not a change in the moon’s phase.

Why is tonight’s full moon called a wolf moon?

Origins of full moon names

  • The “Wolf Moon” is the traditional name for the January full moon, rooted in Native American and Colonial folklore — wolves were heard howling in winter (MoonGiant (lunar calendar)). Since tonight is not a full moon (it’s Waning Gibbous), the Wolf Moon label does not apply now.
  • Other well-known full moon names include Harvest Moon (September/October), Blue Moon (second full moon in a month), and Blood Moon (total lunar eclipse) (Encyclopaedia Britannica (moon lore)).

Wolf moon significance in folklore

  • The howling-wolf connection is symbolic; wolves do not actually howl more at the full moon, but the association stuck (Encyclopaedia Britannica).

The pattern: The wolf moon name is tied to January full moons, not to tonight’s waning gibbous.

What kind of moon is it tonight in Ireland?

Current moon phase for Irish observers

  • For Dublin and all of Ireland, tonight’s Moon is Waning Gibbous at 98.9% illumination, according to timeanddate.com (Dublin moon data).
  • Because Ireland is in the Northern Hemisphere, the standard orientation applies: the illuminated portion shrinks from the right side after a full moon (NASA Science).

Upcoming moon events in Dublin

  • Next full moon visible from Ireland: May 31, 2026 (NASA Science).
  • Next Third Quarter: June 8, 2026 (NASA Science).

The catch: Even if folklore suggests a connection, the scientific evidence doesn’t support it.

Why is the moon affecting my mood today?

Scientific views on moon phase and mood

  • No peer-reviewed evidence conclusively links moon phase to mood or behavior. A 2013 meta-analysis found no correlation between lunar cycle and psychiatric admissions (Encyclopaedia Britannica (medical lunar studies)).
  • Some observational studies suggest slight sleep changes around a full moon, but results are inconsistent (Encyclopaedia Britannica).

Common beliefs about full moon behavior

  • Cultural traditions worldwide associate the full moon with heightened emotion, insanity (“lunacy”), and accidents — but these are not supported by rigorous data (Encyclopaedia Britannica (folklore)).
Bottom line: The Moon’s phase is Waning Gibbous tonight — it’s losing light, not gaining it. For casual observers in Ireland: look west in the early morning for a nearly full disk. For skywatchers tracking dates: the next full moon lands on May 31, 2026.

The pattern: While beliefs persist, the evidence remains inconclusive.

Timeline signal

Here are the upcoming lunar events:

Date/Period Event
Tonight Waning Gibbous visible in early morning
Next few days Moon wanes toward Third Quarter
May 31, 2026 Full Moon (visible in Ireland)
June 8, 2026 Third Quarter Moon

The pattern: after tonight, the Moon’s illumination drops below 90% within three days, making the lunar recession easy to follow with any moon app.

Confirmed facts vs. what’s unclear

Confirmed facts

  • Tonight’s moon phase is Waning Gibbous per TheSkyLive and timeanddate.com
  • Orange moon is an atmospheric scattering effect
  • Wolf moon is the January full moon

What’s unclear

  • Whether moon phase affects mood is unresolved by science
  • Exact cause of orange moon depends on local atmospheric conditions

Expert perspectives on tonight’s Moon

“The Moon’s phase tonight is Waning Gibbous, meaning we’re past the full illumination and moving toward the last quarter. It’s a great time to watch the shadow creeping across the Moon’s face.”

— TheSkyLive (astronomical data)

“If the Moon appears orange tonight, it’s almost certainly due to dust or pollution scattering light — nothing to do with the lunar cycle itself.”

— Space.com (lunar phase guide)

One consequence for Irish readers: if you’re hoping to catch the next full moon, mark May 31, 2026 on your calendar. For those curious about tonight’s orange tint, step outside at moonrise with a clear horizon. The trade-off between folklore and science is clear: trust the phase data, enjoy the cultural stories, but don’t let the Moon dictate your mood — the evidence isn’t there. For observers in Dublin, the decision is simple: look up tonight, use a good app, and share what you see.

Additional sources

nationsgeo.com, phasesmoon.com

For a detailed breakdown of tonight’s lunar cycle, check the current moon phase tonight guide.

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Frequently asked questions

What is a waning gibbous moon?

A waning gibbous moon is the phase after a full moon, when the Moon is more than half illuminated but the lit portion is decreasing each night (NASA Science).

How often does a blue moon occur?

A blue moon — the second full moon in a calendar month — occurs approximately every 2.5 years (MoonGiant).

Can a full moon cause insomnia?

Some studies suggest a slight effect on sleep duration, but the evidence is mixed and not conclusive (Encyclopaedia Britannica).

What is a blood moon in astronomy?

A blood moon occurs during a total lunar eclipse, when the Moon takes on a reddish colour due to Earth’s atmosphere bending sunlight (Encyclopaedia Britannica).

Why does the moon look bigger near the horizon?

This is the “moon illusion” — a psychological effect where the brain perceives the Moon as larger when it’s near familiar objects on the horizon (Encyclopaedia Britannica).

When is the next new moon?

After tonight’s waning gibbous, the next new moon will occur roughly two weeks later. Check NASA Science for exact dates.

Does a full moon affect animal behavior?

Some animals (e.g., corals, night-birds) show behavioral changes, but the effects are species-specific and not universal (Encyclopaedia Britannica).