A jogger makes his way through a soggy Victoria Park, in Auckland. La Nina traditionally brings plenty of moisture to the north, but this time has been different. Photo / Michael Craig

People across the North Island may have to endure this summer’s sticky humidity into autumn, because of an unusual La Nina climate system that isn’t moving away any time soon.

The naturally occurring, ocean-driven phenomenon
– the strongest in nearly a decade – has been meddling with our…

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