16% of the average but compared to micro full moon, 30% brighter: https://www.timeanddate.com/astronomy/moon/super-full-moon.html https://www.timeanddate.com/a

16% of the average but compared to micro full moon, 30% brighter: https://www.timeanddate.com/astronomy/moon/super-full-moon.html https://www.timeanddate.com/astronomy/moon/super-full-moon.h... --- I've also read (but can't find the links for numbers) that the brightness of a full moon compared to just a couple of days before and after is on orders of magnitude brighter. It might be that a supermoon is 150% brighter than 2 days before, for example.