Schools and colleges will remain open for children of critical workers and vulnerable learners, as well as for learners who need to complete essential exams or assessments.
Bydd ysgolion a cholegau yn parhau i fod ar agor i blant gweithwyr hanfodol a dysgwyr sy'n agored i niwed, yn ogystal ag i ddysgwyr sydd angen cwblhau arholiadau neu asesiadau hanfodol.