Carmarthen was affected by flooding on Sunday
A band of heavy rain could bring further flooding to parts of Wales on Monday night.
Worst affected areas are likely to be north and west Wales, where National Resources Wales (NRW) issued nine flood warnings and 22 alerts on the weekend.Two flood warnings cover the Lower Dee Valley from Llangollen to Wrexham and Tenby, Pembrokeshire.
NRW has warned people to prepare, with it expecting to issue more flood warnings on Monday.
The highest rainfall is likely on high ground in the Cambrian Mountains, Snowdonia and the Brecon Beacons.
A spokesman said drains may struggle to cope with the volume of water and roads could be closed.
Swollen rivers could also cause disruption in the south Wales valleys.
