Foreign Minister Winston Peters is accompanying Ardern on a week-long trip to Samoa, Niue, Tonga and the Cook Islands.
A sudden downpour of rain in Samoa today sent the media and delegations scrambling, but stopped just in time for Ardern to inspect the guard of honour.
Ardern also announced today that $3 million worth of extra funding has been committed to Samoa to help with the recovery from Cyclone Gita last month.
She said the country suffered damage to business and homes, as well as a large landslide that will cost a lot to clean up.