Stewart Island is off the southern end of the South Island of New Zealand, comprising Rakiura National Park and the small town of Oban (population 400ish).
This latitude is referred to as “the Roaring Forties,” and for good reason. It’s alternately sunny, raining, windy, cloudy, clear, or some combination thereof.
Rainbows have been pretty frequent. There were several over the bay as I ate dinner at the South Sea Hotel. They kept shifting with the clouds and rain and sun.