The North Island is experiencing the last few days of decent weather before a sharp drop in temperatures over the weekend.
NIWA weather forecaster Chris Brandolino told The AM Show the warm weather Kiwis have been enjoying is on its way out, at least temporarily.
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"[For the] upper North Island, today will be one of the last decent days in terms of the combination of sunshine and relative warmth.
"Tomorrow, the following day and through the weekend I think temperatures are going to be cooler than certainly what we've become accustomed to."
But the cold weather won't last long and temperatures will rise again next week. It's expected to stay warmer than average for some time after that.
"Looks like we'll find temperatures going warm again... next week, especially for the South Island and that will work its way into the North Island.
"Then overall for the next three months our expectation is that temperatures will be average or above average."
Brandolino said NIWA was still looking into the figures, but March 2019 is expected to be either the warmest, or the second warmest month ever for New Zealand.
He said this was down to factors such as a warm Tasman Sea, winds from the northeast and climate change.