May 2023 – hydrological variables highlights: Credit: Copernicus Climate Change Service/ECMWF. Light blue bars denote sea surface temperature and dark blue bars denote marine air temperature shifted by 1☌. Temperatures (☌) averaged over ice-free seas for the month of May from 1979 to 2023. Temperatures over the ocean are already reaching record levels and our data indicates that the average temperature over all ice-free seas for May 2023 was higher than for any other May."
An El Niño signal continued to emerge over the tropical eastern Pacific.Īccording to Samantha Burgess, Deputy Director of C3S, "May 2023 was the 2nd warmest globally as we are seeing the El Niño signal continuing to emerge in the equatorial Pacific.It was notably cooler than normal over Australia and from North-West India to southern Siberia.Parts of Canada, Africa and South-East Asia were significantly warmer than normal.Temperatures on average were close to normal over most of Europe.Sea surface temperature and marine air temperature averaged over all ice-free seas were the highest on record for May.The month was the joint second warmest May globally, less than 0.1☌ cooler than the warmest May on record.The Copernicus Climate Change Service (C3S), implemented by the European Centre for Medium-Range Weather Forecasts on behalf of the European Commission with funding from the EU, routinely publishes monthly climate bulletins reporting on the changes observed in global surface air temperature, sea ice cover and hydrological variables. All the reported findings are based on computer-generated analyses using billions of measurements from satellites, ships, aircraft and weather stations around the world. Surface air temperature anomaly for May 2023 relative to the May average for the period 1991-2020.
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