These conditions could result in large waves and some high water levels around the times of high tides.

Actions have included putting up temporary barriers at Littlehampton East Bank. This will result in some road closures while the barriers are in place. The agency is also putting up extra defences in Arundel, Newhaven and Shoreham.

Its teams are out clearing blockages and checking flood defences across the southeast and will continue to closely monitor the situation.

Duty Manager Mike O'Neill said: "Although there is still uncertainty over where the highest tides will be, we are ready, taking action and doing as much as we can to reduce flood risk.

"We advise people to remain vigilant for flood warnings across Sussex. If they receive a flood warning they should take appropriate action to protect their property."

People are urged to sign up for flood warnings  and avoid walking along coastal paths and promenades when there are large waves.