We will spend 2 wks traveling around the South Island (Blenheim, Hokitika, Franz Joseph, Wanaka, Te Anau, Queenstown, Aoraki, Akaroa) the first half of March. We will do a combination of short hikes and outdoor activities, wine tasting, rafting, day cruise as well as a lot of windshield time driving between all. I understand we need to be prepared for rain and insects as well as sun and warm days. We have waterproof walking shoes, nylon hiking pants, long underwear, rain parka, sun wear.
How likely are we to get a freak snow storm or cold snap that early in the season? I have read oft-repeated advice to layer up but don't really understand what that really means. What specific suggestions can you offer for clothing that will be light weight, not bulky and be multi-use, both on this trip as well as others in the future?