Shutterstock/Andrey Armyagov September 30, 2021 Marine heatwaves during winter could have dire impacts on New Zealand fisheries and herald more summer storms João Marcos Azevedo Correia de Souza, MetService — Te Ratonga Tirorangi; Amandine Schaeffer, UNSW Sydney; Jonathan Gardner, Te Herenga Waka — Victoria University of Wellington, and Robert Smith, University of Otago The oceans around New Zealand are warming faster in winter than in summer. During the winter of 2021, most coastal areas were warmer than usual, and this is likely to bring more storms during summer.