Average rainfall figures (1st October to 28th February) are provided on to a 1km grid to reflect the wide geography of Wales and provide accurate localised data. Figures are based upon the met office’s 1981 – 2010 averaging period. Further information Citable as: Met Office; Hollis, D.; McCarthy, M.; Kendon, M.; Legg, T.; Simpson, I. (2018): HadUK-Grid gridded and regional average climate observations for the UK. Centre for Environmental Data Analysis, 2021. http://catalogue.ceda.ac.uk/uuid/4dc8450d889a491ebb20e724debe2dfb