The tsunami warning issued for New Zealand on Saturday night has been cancelled.
The warning was issued following the large eruption at Hunga-Tonga-Hunga-Ha'pai in Tonga.
"The advice from GNS Science, based on ocean observations, is that the Beach and Marine threat has now passed for all areas," NEMA said in a statement from overnight.
"Strong and unusual currents and unpredictable surges will continue for up to another 24 hours in some locations around the entire country.
"People should remain vigilant and take extra precautions with regards to beach and ocean activities."