A polar blast moving north over the South Island of New Zealand causes major disruptions and claims at least one life.
- Volunteers are working to save the remaining live pilot whales beached at Farewell Spit on New Zealand's South Island. Project Jonah reports that 75 percent of the more than 400 stranded whales are dead.
- A 6.4 magnitude earthquake occurs near the town of Kaikoura on the South Island of New Zealand.
- Official alternative names are announced for the North Island and South Island of New Zealand with Te Ika-a-Maui and Te Waipounamu as the respective Maori language names.
- A cold snap in New Zealand causes widespread snow on both the North and South Islands, disruption to power supplies and the closures of roads and Wellington International Airport.
- 2011 Canterbury earthquake:An earthquake of 6.3 magnitude strikes the region of Canterbury in the South Island of New Zealand, disrupting communications to the area and closing Christchurch Airport.
- Receivers of the Pike River Mine on the South Island of New Zealand lay off 114 workers following the closure of the mine after the Pike River Mine disaster.
- A third explosion within a week occurs at the Pike River Mine on the South Island of New Zealand, where 29 men are presumed dead.
- Twenty-nine coal miners and officials are feared trapped following an explosion at the Pike River Coal Processing Plant at Atarau in the Grey District of the South Island of New Zealand.
- A plane crash near Fox Glacier in the South Island of New Zealand is believed to have killed 9 people.
- A large storm in New Zealand leaves 100,000 people without power and takes the roof off Stadium Southland in Invercargill on the South Island.