On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

NOAA SST Anom April 2012

Differences from average global sea surface temperatures for 8th April to 5th May 2012. Map courtesy of NOAA Climate Diagnostics Centre (http://www.cdc.noaa.gov/map/images/sst/sst.anom.month.gif).