Temperatures indoors are more of the winter shock for me than the outdoor conditions. Insulation and central heating are rarities because of the temperate climate, so if you attend a function in a cavernous old building, that is when you need to wear your heaviest winter gear. How it happens I do not know, but the temperature indoors will chill to the bone, while outside it will feel uncharacteristically, er, not freezing.
A, my eight year old, has yet to wear a coat after fifteen New Zealand months. In fact, shoes are a rarity. Crocs are the flavor most appealing because they can be thrown off easily. As we walk to the bus stop, I no longer ramble on about how the commuters cruising through our great metropolis (pun) will be shocked that a cloaked and shod mom accompanies her bare legged, bare armed and bare foot son-- oh the scorn.
I joke with my Kiwi friends that they only wear cute coats and boots so they can vary their wardrobe, not for need of warmth. Some chuckle and agree-- but some immigrants speak of acclimatizing after a couple of years and actually feeling more cold in the winter, which will be an experiment only involving me. My husband has a gene strain that produces immunity to the cold. I believe my husband and son will continue to wear the same attire all year long; they rarely wore coats in the (literally) freezing weather of the US.
Sunshine is the beauty of the New Zealand winters: when you get it, which is frequent, it will heat you to the bone and give your spirit a glow.