South Island's east connects Christchurch's earthquake-rebuilt Cardboard Cathedral with Kaikoura's whale-watching coast, the Marlborough Sauvignon Blanc valleys, and Abel Tasman's golden-sand walking track.
New Zealand summer with Abel Tasman track at peak, Marlborough vineyards at full leaf, and Kaikoura sperm whales reliable year-round but seas calmest in summer.
Spring shoulder with Marlborough vineyards leafing out, Kaikoura whale watching at peak with calm seas, and Christchurch's Hagley Park cherry blossoms in late September.
Autumn shoulder with Marlborough vintage harvest, Abel Tasman walking pleasant, and Christchurch Buskers Festival in mid-January aside, the harvest season at peak.
Cool South Island winter with Methven's Mount Hutt ski runs, Christchurch's lower temperatures, and Kaikoura whale watching continuing year-round.