Search resumes for man missing overnight in Botany Bay after boat capsize

A search for a fisherman missing in Sydney's Botany Bay after his boat overturned last night will resume today.

Three men were in the small boat when it overturned on to rocks in 2.5 metre swell near Cruwee Cove about 7pm.

Emergency services launched a search and found two of the men clinging to rocks at the bottom of a cliff. However, they were unable to locate the third man.

"Conditions to access these patients in this overturned vessel were quite tricky," a lifesaver said.

"The location is remote for Sydney – it's the end of Botany Bay National Park, which involved hiking some 10 [to] 15 minutes down a track towards patients."

Police and lifeguards will resume the search at sunrise.