ENSO-neutral conditions are now in place, and there is a 70% chance that ENSO-neutral conditions will continue during June-August 2025, followed by a 60% chance that ENSO-neutral will remain in place ...

ENSO-neutral conditions are now in place, and there is a 70% chance that ENSO-neutral conditions will continue during June-August 2025, followed by a 60% chance that ENSO-neutral will remain in place ...

Probabilities are assigned in three categories: above average, near average, and below average. Temperatures are very likely to be above average (60% chance). Rainfall totals are about equally likely ...

The best laid Antarctic plans are entirely at the mercy of Antarctic sea ice, which can change very rapidly. Early in the voyage I met with the ship’s bridge team, including Ice Pilot Evan Solly – a ...

Temperature 2024 was New Zealand’s 10th-warmest year on record, based on NIWA’s seven station series which begins in 1909. Annual temperatures were above average (0.51-1.20°C above the annual average) ...

The tables below show the probabilities (or percent chances) for each of three categories: above average, near average, and below average. In the absence of any forecast guidance there would be an ...

Rainfall Rainfall was below normal (50-79% of normal) or well below normal (<50% of normal) for much of the country. Rainfall was above normal (120-149% of normal) or well above normal (>149% of ...

Coastal sea surface temperatures (SSTs) remained generally above average around the country, ranging from about 0.5˚C to 1.0˚C above average during the past 30 days, but marine heatwave conditions ...

A new species has been named after favourite Wellington brewpub Fork and Brewer. NIWA Marine Biologists Rachael Peart (left) and Kareen Schnabel (right) with competition winner, Fork and Brewer's Head ...

A La Niña Watch remains in effect, with a little over 50% chance that La Niña officially develops by the end of the year. However, this event is likely to be weak and short-lived and might stay below ...

A mystery specimen has been identified as a species never documented in New Zealand waters. Thousands of specimens were collected during NIWA’s three-week Ocean Census voyage to the unexplored Bounty ...

The NIWA and MetService assessment of tropical cyclone (TC) activity for the coming season indicates normal to below normal activity. (Tropical cyclones are categorised in strength from 1 to 5, with 5 ...