May 2026 offers skywatchers a unique celestial double feature: the season’s first “micromoon” followed by a rare “Blue Moon” that is also a micromoon. While both events feature the Moon at its smallest apparent size of the year, they provide distinct opportunities for observation and photography.
The Flower Micromoon: Small, Distant, and Bright
The month begins with the Flower Moon, which reaches 100% illumination at 1:24 p.m. EDT on Friday, May 1. Although the peak illumination occurs during daylight hours for North America, the Moon will appear fully lit to the naked eye throughout the nights of Thursday, Friday, and Saturday.
This is classified as a micromoon because it coincides with the Moon’s apogee—the point in its elliptical orbit where it is farthest from Earth. At approximately 250,000 miles (402,000 kilometers) away, the Flower Moon is about 5% farther from us than average. Consequently, it appears slightly smaller and dimmer than a typical full moon. This stands in stark contrast to the “supermoons” expected later in the year, particularly the notably large supermoon scheduled for Christmas Eve.
Why this matters: The micromoon phenomenon highlights the elliptical nature of the Moon’s orbit. Understanding these variations helps contextualize the dramatic size differences seen between supermoons and micromoons throughout the calendar year.
The Moon Illusion and Color Shifts
Despite its physical distance, the Flower Moon will still appear large to observers when it rises on the horizon. This is due to the moon illusion, a psychological effect where the brain perceives the Moon as larger when viewed against foreground objects like trees or buildings.
As the Moon rises shortly after sunset on May Day (marking the midpoint between the spring equinox and summer solstice), it may also take on an orange hue. This color shift is caused by Rayleigh scattering, where sunlight passes through more of Earth’s atmosphere at low angles, scattering blue light and allowing red and orange wavelengths to dominate.
A Rare Blue Moon Finale
May concludes with a celestial rarity: a Blue Moon on May 31. In astronomical terms, a Blue Moon is the second full moon to occur within a single calendar month. According to NASA, only 6% of full moons qualify as Blue Moons, and they can only happen in months with 31 days, appearing in the final few days of the month.
Adding to its uniqueness, May’s Blue Moon is also a micromoon. In fact, it will be the most distant and smallest full moon of the entire year. This makes May 2026 a special month for lunar enthusiasts, offering two distinct views of the Moon at its minimum apparent size.
Naming Traditions and Observation Tips
The “Flower Moon” name reflects the blooming flora of the Northern Hemisphere in May. However, it carries many other historical names, including the Budding Moon, Egg Laying Moon, and Planting Moon. The Anishinaabe people of the Great Lakes region referred to it as Nimebine Giizis, or Sucker Moon.
While the naked eye is sufficient to appreciate the Moon’s phase and color, enhanced viewing reveals more detail.
* Telescopes and Binoculars: A backyard telescope or stargazing binoculars can help spot famous landmarks, such as Apollo landing sites and major craters.
* Photography: A camera with a decent zoom lens can capture stunning images of the Moon’s surface features, especially when it is low on the horizon.
Conclusion: May 2026 presents a rare opportunity to observe the Moon at its smallest apparent size twice in one month. From the orange-hued rise of the Flower Micromoon to the record-small Blue Moon at month’s end, these events offer a clear demonstration of orbital mechanics and atmospheric effects.
