Thick fog across parts of coastal Otago delayed two boat arrivals and caused early flight disruption at Dunedin Airport.
An Air New Zealand spokesman said about 60 passengers were affected when heavy fog disrupted two early ATR services.
Flight NZ5741, due to land in Dunedin at 7.45am, instead returned to Christchurch, and Flight NZ5742, due to leave for Christchurch at 8.15am, was cancelled.