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

NOAA SST May 2013

Differences from average global sea surface temperatures for 5th of May to 1st of June 2013. Map courtesy of NOAA Climate Diagnostics Centre (http://www.cdc.noaa.gov/map/images/sst/sst.anom.month.gif).