Climate

Weak La Niña conditions continued in the tropical Pacific during March 2018, but trends in low-level winds and in sub-surface ocean temperatures during the month indicate that the event is coming to an end.
New Zealand is situated in the latitudes of prevailing westerlies and exposed coastal locations often experience strong winds, with generally lighter winds elsewhere.
Easter Sunday offers the best weather of the long holiday weekend, according to NIWA forecaster Maria Augutis - but the rest of the break isn’t looking too bad either.

Twice a day at 1pm and 8.30 pm Sean Hartery, NIWA, and Peter Kuma, University of Canterbury, head for the Fantail at the very back of the ship to release their weather balloons.

Climate scientists and glaciologists are taking to the skies this week to find out how New Zealand’s glaciers are faring following this summer’s record-breaking warmth.
Two ex-tropical cyclones impact New Zealand
New Zealand's hottest summer on record.
With La Niña’s influence waning over the next three month period, New Zealand’s regional climate over March – May 2018 is expected to be driven by the warmer than average ocean waters that are present around the country.
Despite a sub-tropical storm and two ex-tropical cyclones, this summer is about to become the hottest in history.
Apart from waning La Niña conditions, New Zealand’s regional climate over the next three month period is expected to be dominated by the very warm ocean waters present around the country, in the Tasman Sea, and in the Southwest Pacific Ocean.
January 2018 was New Zealand’s hottest month on record (since 1909) using NIWA’s seven-station series. Dozens of locations observed their record or near-record high mean temperature for January.
A very warm and dry month
A year of weather extremes across New Zealand
Four seasons with a little bit of everything. It started with the bummer summer… then came the fires, rain, flooding and a very weird November. But it’s all in a year of weather as NIWA wraps up the seasonal highlights.
If history is anything to go by, Wellington and Christchurch are the main centres most likely to experience a dry Christmas Day, while Auckland and Hamilton are the least likely. That’s according to a new climate study undertaken by NIWA meteorologist Ben Noll.
Equal second-warmest spring on record for New Zealand
Hot in the south and dry countrywide to end spring
More than 50 “weather detectives” from 20 countries will be in Auckland next week to share their experiences saving snippets of meteorological history that will ultimately help scientists better understand the processes of climate variability and change.
A weekly update describing soil moisture across the country to help assess whether severely to extremely dry conditions are occurring or imminent. Regions experiencing these soil moisture deficits are deemed “hotspots”. Persistent hotspot regions have the potential to develop into drought.
Does climate change affect the position of the Subtropical Front around New Zealand? This has important consequences for New Zealand's climate and biological productivity.
A very dry and warm month for the South Island interior
The tropical Pacific is still officially in a ENSO (El Niño Southern Oscillation) neutral state, but some indicators have leaned more towards La Niña conditions during the course of October 2017.
A large area of high pressure will take up residence east of New Zealand for the next few days, bringing more unusual springtime warmth to parts of the South Island from tomorrow through to late next week, says NIWA forecaster Seth Carrier.

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