Christchurch marks midwinter

On the morning of June 21st, over 100 hardy souls (and a few dogs) charged into the ocean at New Brighton Beach for the New Zealand Antarctic Society’s inaugural Midwinter Polar Plunge.

As the sun rose above the horizon, an enthusiastic countdown sent the group racing towards the 10°C ocean that links Ōtautahi Christchurch with Antarctica.

The event celebrated the most important day in the Antarctic calendar, honouring the 927 people currently wintering over on the ice.

While much of Antarctica remains covered in 24 hours of darkness, the sunrise during the plunge symbolised the slow return of light to the frozen continent.

Traditionally, some coastal Antarctic stations celebrated midwinter with an icy swim, though many, including Scott Base, have since retired the practice. As one of only five international gateway cities to Antarctica, Christchurch is perfectly placed to keep the tradition alive.

"Midwinter was my favourite celebration during my two winters on the ice," said Jonny Harrison. "To recreate that spirit here in Christchurch, with the wider community, is something special."

The event was co-hosted by the Step Ahead Trust, which supports members of the community with mental health conditions. This partnership encouraged open dialogue about mental health, raising awareness of the challenges faced both in Antarctica and at home.

With strong support for the event, organisers are already planning for a bigger splash next year. Mark your calendar for the 2026 edition of the midwinter polar plunge!

• Article written by Matty Jordan.
• Images by Jonny Harrison @jonnyharrisonnz.