Mae Rheoliadau Diogelu Iechyd (Cyfyngiadau Coronafeirws) (Rhif 5) (Cymru) 2020 yn ei gwneud yn ofynnol cynnal adolygiad o'r rheoliadau coronafeirws bob tair wythnos. Roedd yr adolygiad tair wythnos diweddaraf i gael ei gwblhau erbyn 26 Mai.
The Health Protection (Coronavirus Restrictions) (No. 5) (Wales) Regulations 2020 require a review of the coronavirus regulations to be undertaken every three weeks. The most recent three-week review was due to be completed by 26 May.