Subtropical in the north and temperate in the south. The north has no extremes of heat or cold but winter can be quite cool in the south, with snow in the mountains. The eastern areas often experience drought conditions in summer; the west, particularly in South Island, has more rain.

Lightweight cottons and linens are worn in North Island most of the year and in summer in South Island. Mediumweights are worn during winter in South Island. Rainwear is advisable throughout the year, and essential if visiting South Island's rainforest areas.