BBC News By Matt McGrath image copyrightGetty Images image captionLa Niña has already brought heavy rains to some regions and will likely see slightly cooler conditions in 2021 UK Met Office scientists are forecasting that 2021 will be a little cooler around the world, but will still be one of the top six warmest years. The La Niña weather phenomenon will see temperatures edge down but greenhouse gases will remain the biggest influence. Researchers say the world will likely be around 1C warmer than the pre-industrial era. It will be the seventh year in a row close to or above this mark.