Tourists from around the world visit Japan during cherry blossom season, which is usually in the spring. But more than 300 people reported seeing a mid-October surprise.
Reports of the famous pink and white flowers have come in from one of the southernmost cities to one in the northern region.
A tree doctor told Japanese broadcaster NHK that recent typhoons stripped many of the trees of their leaves, and losing those leaves early caused the trees to bloom.
Japan has seen two major typhoons in the last few months.
