Newlyn Fish Festival has been held for many years on August Bank Holiday Monday - the last Monday of August. However, for the last few years, this has not happened following both COVID and alterations/changes in the harbour. It is, however, hoped for it to return soon and, when it does, Newlyn will become host to visitors from all over the country and further afield for this Annual Newlyn Fish Festival, celebrating Newlyn's heritage of fishing and seagoing which have been a vital part of Cornish life since time immemorial.

The Harbour is filled with fishing boats of all types and sizes, as well as visiting boats ranging from modern Naval craft to wooden sailing ships. Many of the boats are open to visitors who can learn much of the hardships of the men who make their living from the sea.

In the main Fish Market, displays of the types of fish to be found regularly landed here can be seen - including shark, rays and skate, as well as the more commonly known fish - and many local chefs demonstrating their skills in preparation of all types of local fish and seafood. Stalls selling fish, fish products and numerous nautical items complete the Market displays. Outside, around the quay, are numerous other stalls, nautical demonstrations and entertainments to complete the enjoyment of this very popular event.