Rai Falls sits on the Rai River within the Pelorus Bridge Scenic Reserve, roughly midway between Nelson and Blenheim on New Zealand's South Island.

The falls are visible directly from the highway — no walking track is required — making them one of the more effortless roadside stops in the Marlborough region.

At around 5 metres in height, they function more as a powerful rapid than a dramatic plunge, but the surrounding native bush and river scenery add to their appeal.

The Rai River above the falls is noted as productive trout water, reportedly holding over 200 fish per kilometre and designated fly-fishing only. Kayakers also monitor flow conditions at the falls as a gauge point on the river.

The nearest town is Havelock, about 25 kilometres to the south.