The A264 at Faygate is blocked both ways due to flooding,
According to traffic reports, there are delays from Tower Road to Clovers Way. Traffic between Crawley and Horsham is affected.
Meanwhile, the B2116 at Plumpton is also blocked both ways due to flooding near Plumpton College.
It is affecting traffic between Lewes and Ditchling.
Rail passengers may also be facing delays this morning following the earlier closure of the line between Brighton and Lewes.
Southern said there may be some delays and cancellations to some services.