These climate maps are updated daily and are based on data from our National Climate Database.

CASAL is an advanced software package developed by NIWA for fish stock assessment.

NIWA's mission is to conduct leading environmental science to enable the sustainable management of natural resources for New Zealand and the planet.

These datasets are available in a range of formats.

Sea surface temperatures in the southern Tasman Sea rose to exceptionally high levels in late 2017 and early 2018. These temperatures were far above any others previously observed at that time of year in the region, and extended west from New Zealand to Tasmania and mainland southeast Australia.

At the age of seven, NIWA’s youngest climate scientist, Nava Fedaeff, swapped sub-arctic Siberia for balmy Auckland – and her first job was to learn to swim.

This project demonstrates how to assess high value alternative land-use options by means of a quantitative analysis of the growing potential of selected niche crops and tree species.

Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori.

Because of its exposure to disturbed weather systems from the Tasman Sea, this climate zone is often quite windy, but has few climate extremes.