Latest from Niwa

'Threat multiplier': What is fuelling ex-tropical Cyclone Tam?
Maritime NZ says some of the winds forecast are the strongest since 2017.

Heavy rain, 100km/h winds: Severe storm approaching NZ upgraded to Tropical Cyclone Tam
'It will bring significant weather to the upper North Island late Wednesday to Thursday.'

Pair rescued from Nelson flood waters in day of wild weather
Heavy rain has slammed the country.

Upper North Island braces for overnight downpours before Friday rush hour chaos
Aucklanders may be in for a long commute to work tomorrow morning, with heavy rain tipped.

Govt allows Chinese ship to undertake research in NZ waters
Researchers from eight countries, including NZ, joined the 56-day expedition.

Why this week’s rain won’t be enough to end NZ drought
Auckland can expect warm nights with lows around 18C this week.

'Atmospheric river': Large weather system set to strike NZ
A large weather system approaching from the Tasman Sea is set to strike mid-week.

Popular day hike deceptively dangerous
Easter visitors are warned not to be complacent about the Tongariro Crossing.

How NZ scientists aim to protect critically endangered leatherbacks
Experts from three countries are studying leatherback turtles in Whakatāne.

Storm disrupts flights around NZ: Heavy rain hits, temp plunge
While South Island gets battered, North Island in for a different forecast.

'Wet weekend': Rain, hot muggy nights for start of Auckland Anniversary Weekend
Warm, muggy temperatures cloak the North Island with only one cloudless day.

Storm hits: Power cuts, road closures as rivers rise in Northland
Severe weather watches and warnings are in force.

‘Extreme care’: Thunderstorms, downpours bear down on Nth Island, wind warnings for harbour bridge
Civil Defence has warned people to keep watch on the incoming storm due from 3pm today.

19hr deluge: Thunderstorms, gales prompt warnings
Civil Defence has warned people to keep watch on the incoming storm due from 3pm today.

Auckland’s weather forecast goes downhill: Showers, strong winds forecast amid SailGP
Increasing cloud expected for City of Sails, along with showers, and a daily high of 24C.

Summer's coming! Warm air from subtropics headed our way in late January
Good weather should coincide with Waitangi Day and regional anniversary holidays.

Dargaville records lowest annual rainfall as dry spell continues
Record dry weather recorded in parts of Northland, but growers cheer no heavy rain.

Auckland’s scratchy ‘sea lice’ problem spreading
Swimmers have reported itching, rashes or red spots after entering the water in Auckland.

Thundestorm alerts issued around NZ, motorists warned to take care
Motorists are being warned to drive 'carefully' as heavy falls start in Rotorua, Taupō.

North Island braces for thunderstorms, hail and heavy downpours
Motorists are being warned to drive 'extremely carefully'.

Heavy rain warning issued for BoP, outlook for Christmas Day
An orange heavy rain warning is in force for the Bay of Plenty for Saturday.