The Met Office has issued a heavy rain warning for:
Carmarthenshire, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Powys, Rhonnda Cynon Taff, Swansea, Blaenau Gwent, Bridgend, Caerphilly, Torfaen, Cardiff, Newport, Vale of Glamorgan, Ceredigion, Pembrokeshire, Wrexham, Denbighshire and Gwynedd
The Met Office says surface water flooding is likely on stretches of the road network, and in places strong winds will lead to considerable spray.
There are hazardous driving conditions because of rain on the M4 in both directions between J22 M49 and J30 A4232 (Cardiff Gate).
The Met Office has issued a yellow "be aware" warning of rain for South and West Wales tonight.
The Environment Agency now has 28 flood alerts (down from 33) in force across Wales.
The Environment Agency has issued 25 flood alerts for Wales from Gwynedd to the Vale of Glamorgan.
It says an alert means flooding is possible. Be prepared.
There are hazardous driving conditions because of rain on the M4 Second Severn Crossing in both directions between M4 J22 / M49 and J30 A4232 (Cardiff Gate).
Environment Agency Wales has issued six flood alerts for Wales. People in areas at risk of flooding are warned to be prepared.
There are delays of up to 30 minutes on Arriva Trains Wales and Crosscountry services between Gloucester and Newport because of flooding at Lydney.
Rain means there are poor driving conditions on the M4 between J22 Pilning and J30 Cardiff Gate
There are poor driving conditions on the M4 between J30 Cardiff Gate and J49 Pont Abraham because of rain.
