South Africans are in for a rare celestial treat this May, with two full moons set to appear in a single month – a phenomenon often referred to as a Blue Moon.
According to astronomical data, the first full moon will rise on 1 May 2026, with the second closing out the month on 31 May 2026.
Why a Blue Moon is unusual
The moon follows a cycle of roughly 29.5 days, which doesn’t line up neatly with the calendar.
That’s why most months only get one full moon. But every few years, the timing shifts just enough to squeeze in a second one, creating a Blue Moon.
It’s not something you see often (this is where that saying comes from!). On average, it happens about once every two to three years.
What South Africans can expect this May
Both moons should be clearly visible across the country, weather permitting.
The 1 May full moon kicks off the month with a bright, early evening rise at 19:23.
The 31 May full moon will appear again at the very end of the month at 10:45, giving skywatchers a second chance
Even better, the moon will appear “full” for a night or two on either side of each date, so you won’t miss it if skies are cloudy on the exact day.
The 31 May moon will also be a micro moon, which occurs when the full moon is at the point in its orbit where it is farthest from Earth (known as apogee).
This means that this moon may appear slightly smaller and dimmer than usual.
It’s not something most people will notice immediately, but side-by-side with a “normal” full moon, the difference becomes clearer.
