Since the start of the pandemic, 17,125 cases of Covid-19 have been confirmed in Wales.
Health Boards Aneurin Bevan, Cwm Taf Glamorgan and Hwyel Dda reported no new cases on Sunday.
The Betsi Calwaladr University Health Council saw the largest increase with 18 new cases.
Cardiff and Vale Board of Health and Powys Board of Health both saw one new case, and Swansea Bay saw two new cases.
It comes as the Welsh government confirmed on Saturday that campsites and tourist accommodation with shared facilities, like hotels, could reopen.
On Monday, July 27, cinemas, museums and beauty salons are also expected to open and a new rule making it mandatory to wear a face mask on public transport comes into force.
The following businesses can open their doors on Monday:
- beauty salons
- nail salons
- tattoo shops
- game rooms
- museums and galleries
On Saturday July 25, Wales recorded no new coronavirus deaths for the fifth time in a week.
No new deaths have been reported by PHWs on 11 occasions this month (July 6, 10, 12, 13, 16, 18, 20, 21, 23, 24 and 25).
However, this does not necessarily mean that no one has died with the virus on these specific dates, as it can take several days for a death to be officially recorded.