The facilities for household waste at Roughmute near Bonnybridge and Kinneil Kerse near Bo’ness will remain open seven days a week until Sunday, June 28.
Entry will be from 8am until 6pm – with last admission at 5.45pm.
The local authority said both sites remain very busy with over 10,000 vehicles accessing the centres.
Temporary traffic control measures established in conjunction with Police Scotland and the council’s Roads Services will remain in place, to help maintain the clear way on the main roads to both sites and minimise congestion.
The council warned: “The direct access roads to both sites must be kept clear at all times - this allows other road traffic, which may include emergency vehicles and public transport services to flow uninterrupted.
“Our traffic management plan for reopening, as agreed with Police Scotland, does not allow vehicles to perform a right turn into either site - traffic information and diversion signs are in place on access routes to both sites.
“You may as a result be asked to either consider visiting at a later time or date – google maps feature on the recycling centres webpage shows a live traffic feed for each site.
“When necessary you will be asked to keep moving, with no queuing permitted beyond points being managed by site staff, and follow the diversion (a loop is in place should you wish to reattempt access). When sites are busy, this may mean that you are moved on and the vehicle behind you is allowed access, this being possible as a vehicle has subsequently left site.”
The local authority is urging people to only visit a site if they cannot safely store waste at home.
They have also asked the public to “be patient and courteous with site staff, and each other”.