Ospreys take on Toulouse, while Scarlets are at home to Exeter.
KO for both games is at 13:35
More top news
Carwyn Jones and Leanne Wood join forces to put forward an alternative plan for the UK's departure from the European Union
Winter sunshine with cloud creeping in during the afternoon and a frosty night ahead.
The Revd Canon Joanna Penberthy has been consecrated as Bishop of St Davids in "an historic" day for the Church in Wales.