May's Flower Micromoon Shines Small Tonight, Followed by a Rare Blue Micromoon

Tonight, the first full moon of May, known as the Flower Moon, will rise shortly after sunset, offering skywatchers a captivating celestial display. This year's Flower Moon is a micromoon, appearing slightly smaller and dimmer due to its position at the moon's farthest point from Earth.

Adding to the excitement, May 2026 will feature a rare second full moon on May 31, called a Blue Moon, which will also be a micromoon. This makes May a unique month with two full moons, a phenomenon that occurs in only about 6% of full moon cycles.

What Makes the Flower Moon Special This Year?

The Flower Moon reaches full illumination at 1:24 p.m. EDT on May 1, but will be visible in its full glory during the evening hours. It rises just after sunset on May Day, symbolizing the midpoint between spring equinox and summer solstice in the Northern Hemisphere.

This full moon is a micromoon, meaning it occurs when the moon is near apogee, its farthest distance from Earth—about 250,000 miles away. This distance makes the moon appear about 5% smaller and dimmer than average, a subtle contrast to the larger supermoons expected later this year.

The Moon Illusion and Color Effects Enhance the Viewing Experience

Despite its smaller size, the Flower Moon will appear impressively large near the horizon due to the 'moon illusion,' where the brain perceives the moon as bigger when seen alongside terrestrial objects like trees or buildings.

Additionally, the moon will take on an orange hue as it rises, caused by Rayleigh scattering—an atmospheric effect that scatters shorter wavelengths of light and allows longer, reddish wavelengths to dominate.

Cultural Significance and Names of the Flower Moon

The Flower Moon is named for the abundance of blooming flowers in May across the Northern Hemisphere. Native American tribes have various names for this moon, including the Budding Moon, Egg Laying Moon, Planting Moon, Mothers' Moon, Bright Moon, Hare Moon, and Grass Moon.

The Anishinaabe people of the Great Lakes region call this full moon Nimebine Giizis, or Sucker Moon.—Center for Native American Studies

A Rare Blue Micromoon Caps Off May 2026

On May 31, the month will feature a second full moon, known as a Blue Moon—a rare event that happens in only about 6% of full moon cycles. This Blue Moon will also be a micromoon, making it the smallest and most distant full moon of the year.

This rare occurrence makes May 2026 a special month for moon enthusiasts, offering two opportunities to witness full moons with unique characteristics.

Tips for Observing and Photographing the Full Moons

• Watch the moonrise in the east during dusk for the most dramatic views.
• Use binoculars or a backyard telescope to spot lunar landmarks like Apollo landing sites and craters.
• Capture stunning photos with a decent camera, especially during moonrise when colors and size illusions are most striking.

Whether you're a casual observer or an avid astronomer, these full moons provide a perfect chance to connect with the night sky and appreciate Earth's natural satellite.