What does the data show? The data shows monthly averages of surface temperature (°C) for 1991-2020 from HadUK gridded data. It is provided on a 2km British National Grid (BNG).   What are the naming conventions and how do I explore the data? This data contains a field for each month’s average over the period. They are named 'tas' (temperature at surface) and the month. E.g. 'tas March' is the average surface temperature for March in the period 1991-2020.   To understand how to explore the data, see this page: https://climatedataportal.metoffice.gov.uk/pages/user-guide Please note, if viewing in ArcGIS Map Viewer, the map will default to ‘tas January’ values.   Data source:  HadUK-Grid v1.1.0.0 (downloaded 11/03/2022)   Useful links Further information on HadUK-Grid Further information on understanding climate data within the Met Office Climate Data Portal