And strengthened guidance will advise face coverings are worn in all public places, including public transport, to help keep Wales safe.
Bydd canllawiau’n cael eu cryfhau i gynghori pobl i wisgo gorchuddion wyneb ym mhob lle cyhoeddus, gan gynnwys trafnidiaeth gyhoeddus, i helpu i ddiogelu Cymru.