Nic Lonsdale, duty watch manager at Portland Coastguard, said: "We are urging people to observe the warning signs and stay away from the edge." The cliffs at Durdle Door and Lulworth have been crumbling since the start of year.
In January, the steps to the famous landmark collapsed. Earlier this month, coastguards warned that the path was beginning to fall away.
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Southend United are promoted to League One after a nail-biting play-off final against Wycombe, which they won 7-6 on penalties.
Kate Haskell has the weekend forecast for the east of the region
Kate Haskell has the weekend forecast for the west of the region.