Low visibility and snow forced a trip by New Zealand Prime Minister John Key to the South Pole to be cancelled on Saturday.
Mr Key arrived in Antarctica on Friday night and was due to depart for the Pole early on Saturday.
But snow overnight resulted in low visibility, which stops aircraft flights.
Mr Key can't make the trip on Sunday, because aircraft are not used in Antarctica on Sundays, which is a rest day.
However he will still host a dinner on Sunday night for American scientists at Scott Base, which celebrates its 56th anniversary on Sunday.
Former prime minister Helen Clark visited the South Pole in 2007.