Central and northern regions of New Zealand have been warned to expect showers today.

MetService duty forecaster Claire Flynn said people in northern and eastern regions would be dodging showers all day.

While the showery weather would also affect the rest of the island, it was set to clear sooner in the day.

Auckland could expect a comfortable 20C but Wellington would be slightly cooler on 15C thanks to a southerly change.

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It was a different story in the South Island with a mainly fine day in store for most, save a few showers in the far south.

Ms Flynn said Christchurch and Dunedin would enjoy a brisk but fine 16C day.

Earlier, MetService lifted a thunderstorm watch that it had issued this morning for northern regions of the North Island. The warning covered Auckland, Coromandel Peninsula, Waikato and Bay of Plenty.

Duty forecaster Claire Flynn said heavy showers were now over the Coromandel Peninsula but lightning activity had stopped.

The rain was expected to move off to sea.

MetService warned to expect intense localised downpours of up to 30mm in an hour as the stormy weather passes overhead.

It predicted possible surface and flash flooding, especially in low-lying areas such as streams, rivers or narrow valleys, and slips.

MetService said the front had already produced up to 30mm of rain in some places.