Bydd cau ysgolion mewn tywydd garw yn effeithio’n fawr ar y sector cyhoeddus a’r sector preifat am fod rhieni’n gorfod gadael eu gweithleoedd i ofalu am eu plant. Y pennaeth a’r awdurdod lleol fydd yn penderfynu a ddylid cau ysgol. Y llynedd, yn ystod yr hydref/gaeaf, cyhoeddodd Llywodraeth Cymru arweiniad yn rhoi cyngor i ysgolion ynglŷn ag aros ar agor neu gau mewn tywydd gwael eithafol. Fe’i cyhoeddwyd ar y cyd â Chymdeithas Llywodraeth Leol Cymru. Mae’n cynnwys asesiad risg cyffredinol, y gellir ei addasu ar gyfer amgylchiadau pob ysgol, ac mae’n rhoi enghreifftiau o’r problemau a allai wynebu ysgolion, ac awgrymiadau ynglŷn â’u datrys. Mae’r cyngor yn dal yn gyfredol a gellir cael gafael arno ar-lein drwy wefan Llywodraeth Cymru.
School closures during severe weather have a broad impact on both the public and private sectors as parents are drawn away from their place of work in order to provide child care. The decision to close a school lies with the head teacher and local authority. Last autumn/winter the Welsh Government issued guidance which gave advice to schools on whether to remain open or close in extremely bad weather. It was a joint publication with the Welsh Local Government Association. It includes a general risk assessment, which can be adopted to suit every school's circumstances and provides examples of the issues that schools may face, with suggestions on how to tackle them. The advice remains current and can be accessed online through the Welsh Government's website.