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

NOAA sea surface temperature anomaly map

Differences from average global sea surface temperatures for 4th September 2011 to 1st October 2011. Map courtesy of NOAA Climate Diagnostics Centre (http://www.cdc.noaa.gov/map/images/sst/sst.anom.month.gif).