February has been used as a name three times in the UK, according to the records. They're all female & all have ordinary middle names - am betting at least one of them swapped!
I don't love any of the months as names, although the more unusual ones are fun to see.
May is okay.
June and
April are also okay, but seem a little elderly, &
August sounds very
German to me as a name and I want to pronounce it 'ow-goowst'.
July sounds like 'd'you lie'. January has a nice sound, but it's a cold gloomy month to be named for. March sounds like a command. Not wild about the others.
Medi is also okay (
September in Welsh, sometimes used as a name) but I don't think it would work too well outside Wales.