Bydd ysgolion yn ceisio rhoi gwybod i rieni, disgyblion a staff os bydd angen cau ysgol y tu allan i'r calendr ysgol safonol cyn gynted â phosibl.
Pan fo’r tywydd yn wael, caiff y dudalen hon ei diweddaru'n uniongyrchol gan ysgolion.
I edrych am ysgolion sy’n cael eu cau yn y dyfodol, edrychwch ar ein rhestr o ysgolion y bwriedir eu cau.
| Ysgol | Statws | Dyddiad | Gwybodaeth Ychwanegol |
|---|---|---|---|
| Coleg Cymunedol Y Dderwen | Agored | 08/08/2026 | |
| Cylch Meithrin Pencoed | Agored | 08/08/2026 | |
| Darpariaeth Amgen y Bont | Agored | 08/08/2026 | |
| Prawf ysgol | Agored | 08/08/2026 | |
| Ysgol Arbennig Heronsbridge | Agored | 08/08/2026 | |
| Ysgol Bryn Castell | Agored | 08/08/2026 | |
| Ysgol Brynteg | Agored | 08/08/2026 | |
| Ysgol Fabanod Bryntirion | Agored | 08/08/2026 | |
| Ysgol Fabanod Cefn Glas | Agored | 08/08/2026 | |
| Ysgol Gyfun Bryntirion | Agored | 08/08/2026 | |
| Ysgol Gyfun Cynffig | Agored | 08/08/2026 | |
| Ysgol Gyfun Gymraeg Llangynwyd | Agored | 08/08/2026 | |
| Ysgol Gyfun Maesteg | Agored | 08/08/2026 | |
| Ysgol Gyfun Porthcawl | Agored | 08/08/2026 | |
| Ysgol Gymraeg Bro Ogwr | Agored | 08/08/2026 | |
| Ysgol Gynradd Abercerdin | Agored | 08/08/2026 | |
| Ysgol Gynradd Afon-y-Felin | Agored | 08/08/2026 | |
| Ysgol Gynradd Archddiacon John Lewis | Agored | 08/08/2026 | |
| Ysgol Gynradd Betws | Agored | 08/08/2026 | |
| Ysgol Gynradd Blaengarw | Agored | 08/08/2026 | |
| Ysgol Gynradd Bracla | Agored | 08/08/2026 | |
| Ysgol Gynradd Bro Ogwr | Agored | 08/08/2026 | |
| Ysgol Gynradd Bryncethin | Agored | 08/08/2026 | |
| Ysgol Gynradd Brynmenyn | Agored | 08/08/2026 | |
| Ysgol Gynradd Caerau | Agored | 08/08/2026 | |
| Ysgol Gynradd Cefn Cribwr | Agored | 08/08/2026 | |
| Ysgol Gynradd Coety | Agored | 08/08/2026 | |
| Ysgol Gynradd Corneli | Agored | 08/08/2026 | |
| Ysgol Gynradd Croesty | Agored | 08/08/2026 | |
| Ysgol Gynradd Cwmfelin | Agored | 08/08/2026 | |
| Ysgol Gynradd Ffaldau | Agored | 08/08/2026 | |
| Ysgol Gynradd Garth | Agored | 08/08/2026 | |
| Ysgol Gynradd Gatholig St Robert | Agored | 08/08/2026 | |
| Ysgol Gynradd Gatholig y Santes Fair | Agored | 08/08/2026 | |
| Ysgol Gynradd Gatholig y Santes Fair a Sant Padrig | Agored | 08/08/2026 | |
| Ysgol Gynradd Gymraeg Calon Y Cymoedd | Agored | 08/08/2026 | |
| Ysgol Gynradd Gymraeg Cynwyd Sant | Agored | 08/08/2026 | |
| Ysgol Gynradd Hengastell | Agored | 08/08/2026 | |
| Ysgol Gynradd Litchard | Agored | 08/08/2026 | |
| Ysgol Gynradd Llangrallo | Agored | 08/08/2026 | |
| Ysgol Gynradd Llangynwyd | Agored | 08/08/2026 | |
| Ysgol Gynradd Maes yr Haul | Agored | 08/08/2026 | |
| Ysgol Gynradd Mynydd Cynffig | Agored | 08/08/2026 | |
| Ysgol Gynradd Nant-y-moel | Agored | 08/08/2026 | |
| Ysgol Gynradd Nantyffyllon | Agored | 08/08/2026 | |
| Ysgol Gynradd Notais | Agored | 08/08/2026 | |
| Ysgol Gynradd Parc y Gorllewin | Agored | 08/08/2026 | |
| Ysgol Gynradd Pen-y-bont | Agored | 08/08/2026 | |
| Ysgol Gynradd Pencoed | Agored | 08/08/2026 | |
| Ysgol Gynradd Plasnewydd | Agored | 08/08/2026 | |
| Ysgol Gynradd Porthcawl | Agored | 08/08/2026 | |
| Ysgol Gynradd Tondu | Agored | 08/08/2026 | |
| Ysgol Gynradd Trelales | Agored | 08/08/2026 | |
| Ysgol Gynradd Tremains | Agored | 08/08/2026 | |
| Ysgol Gynradd Tynyrheol | Agored | 08/08/2026 | |
| Ysgol Gynradd Y Drenewydd | Agored | 08/08/2026 | |
| Ysgol Gynradd y Pîl | Agored | 08/08/2026 | |
| Ysgol Gynradd yr Eglwys yng Nghymru Pen-y-fai | Agored | 08/08/2026 | |
| Ysgol Iau Llangewydd | Agored | 08/08/2026 | |
| Ysgol Pencoed | Agored | 08/08/2026 | |
| Ysgol Uwchradd Gatholig Archesgob McGrath | Agored | 08/08/2026 | |
| Ysgol Y Ferch O'r Sger Corneli | Agored | 08/08/2026 |
