The June full moon will be the third and final supermoon, with its orbit closer to Earth than usual when it turns full.
It will appear full for around three days this time, from early Wednesday morning through early Saturday morning, according to NASA.
In Vietnam, sky gazers will be able to see it biggest and brightest at 1-2 a.m. on Friday.
The two previous supermoons came in April and May.
The event in May was also the only total lunar eclipse of 2021.