Skywatchers across the United Kingdom are set to witness a striking lunar display this week as the June full moon, commonly known as the “strawberry moon,” will appear unusually low on the horizon. This visual phenomenon, which is expected on the night of June 30, is considered rare and will not be seen again in this manner until 2043.

The moon’s low trajectory is a result of a long-term orbital cycle. The moon orbits Earth on a path that shifts over an 18.6-year period, causing the points where it rises and sets to vary. Currently, the moon is near one of the most extreme positions in this cycle, resulting in its notably lower path in the sky than during a typical full moon in June.

On this night, observers looking southeast shortly after sunset—between approximately 9:30 p.m. and 10 p.m., depending on location—will see the full moon sitting very close to the horizon. It will maintain a low position throughout the night, reaching its highest point around 1 a.m. but still remaining near the skyline. The moon may appear larger than usual due to the “moon illusion,” a psychological effect that makes the moon look bigger when it is near familiar terrestrial landmarks such as buildings, trees, or hills. This perceived enlargement occurs even though the moon is actually marginally smaller than average during this time, as it nears the farthest point in its orbit from Earth.

The “strawberry moon” name originates from North American traditions and corresponds to the seasonal harvest of wild strawberries, rather than referring to the moon’s color. However, the moon is likely to exhibit a deep orange or reddish hue while close to the horizon. This coloration results from Earth's atmosphere scattering shorter blue wavelengths of light when the moon’s rays pass through a thicker layer of air near the horizon, leaving behind warmer tones.

Assuming clear skies, this event offers a rare and visually captivating opportunity for UK residents to experience one of the more dramatic full moons in recent memory.