May 31, 2026 Blue Moon and Micromoon seen across Europe, UK viewing sites

A second full moon in May 2026 – known as a “Blue Moon” – will occur on 31 May at 10:45 UTC. Because it follows a first full moon on 1 May, the year will have 13 full moons in total. The same lunar passage is also classified as a “micromoon”, meaning the Moon is near its farthest point from Earth and will appear slightly smaller and dimmer, although it will not take on a blue colour.

In the United Kingdom, several locations have been highlighted as optimal for observing the event. Northumberland National Park was ranked second in a list of the best UK spots, praised for its very low light‑pollution score (0.199) and a modest 29 % chance of rain on the night. The park was described as “the number two place to see the blue moon this May.” Other high‑scoring sites include Bodmin Moor, the North York Moors and Hadrian’s Wall. Viewers are advised to choose dark‑sky areas, consider weather, and possibly bring a telescope for a clearer sighting.