Can't do IPA on my phone, unfortunately. Most of the time I've heard "mraw/mrah" and, in searching a while i found that some people say "m'noo". I'm far from fluent, though, so I can only say what I've heard. I downloaded an app "How to Say: Pronunciation App" and teanglann.ie really helps.
I pronounce it like m'naw but yeah it's pronounced different around Ireland.
Usually m'naw but some pronounce it m'raw. I forget which part of the country does that.