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

NOAA SST Apr 2013

Differences from average global sea surface temperatures for 31st of March to 27th of April 2013. Map courtesy of NOAA Climate Diagnostics Centre (http://www.cdc.noaa.gov/map/images/sst/sst.anom.month.gif).