The next blue moon will be on 31 May 2026.

Quick Scoop

  • A blue moon is the name given to an “extra” full moon, not a moon that looks blue.
  • The upcoming blue moon is a calendar (monthly) blue moon: it’s the second full moon in May 2026.
  • Date and time: 31 May 2026, around 08:45 UTC (the exact clock time can vary a bit by time zone, but the date stays May 31 for most locations).

What “blue moon” means

  • Common modern meaning: the second full moon in a single calendar month.
  • Older/alternative meaning: the third full moon in a season that has four full moons.
  • In 2026, the May 31 event is the “second full moon in May,” so it counts as a blue moon under the common modern definition.

Extra fun fact

  • The May 31, 2026 blue moon is also a micromoon (the full moon near its farthest point from Earth, so it looks slightly smaller than usual).

Information gathered from public forums or data available on the internet and portrayed here.