A period of hot and muggy weather has arrived from the tropics - and is bringing plenty of rainy days and humid nights.
NIWA forecaster Chris Brandolino said Christchurch is set to hit 26 deg C later today as the rain clears.
He told Morning Report while it's sticky in the lower North Island and upper South Island, the upper North Island will be feeling it the worst.
Dew point temperatures are "pretty high" at 17, but the upper North Island temperatures are at around 20C making it very sticky, he said."There is relief on the way so if you're not a fan of bad hair days, high humidity and sleepless nights, we're thinking basically today a change will happen."
Brandolino said by tomorrow morning should bring some relief.
However, heading into the weekend the humidity looks set to return and last until mid-week, he said.Meanwhile, drivers on the South Island's West Coast are being asked to drive cautiously due to surface flooding caused by heavy rain.
The warning applies from Hokitika south to Haast.
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