Can i climb Mt Fuji mid september time? Approx the 22nd or 23rd?Yes, if you prepare well and have experiences with high mountains, i.e. are able to judge the weather conditions and potential dangers.
If so, would i need hiking boots etc?
Hiking boots are always recommended, although you see hikers doing it in regular shoes. Among the people you see limping down the mountain, most do not have proper footware. An injury to your ankles can be potentially very dangerous in the off-season.