The bay sits on a geological fault line, which contributed to the formation of the large sandy basin.
Għadira Nature Reserve was restored from a former salt marsh that had been used as a parking lot in the 1970s.
The shallow incline of the seabed makes it one of the few beaches in the Maltese archipelago suitable for non-swimmers to walk safely far from the shore.
The beach is a nesting site for protected flora, including the sand-dune stabilizing Sea Daffodil.
During the winter months, the adjacent nature reserve acts as a vital freshwater stopover for bird species migrating between Europe and Africa.
Mellieħa Bay, also known as Għadira Bay, is the largest sandy beach in Malta, spanning approximately 800 meters. The beach is characterized by its exceptionally shallow waters, which remain waist-deep for a considerable distance from the shore. It is a Blue Flag certified site, recognized for its water quality and environmental management. The shoreline features fine golden sand, distinguishing it from the rocky coastlines common elsewhere on the island. A protected nature reserve, Għadira Nature Reserve, is located immediately inland from the beach, serving as a sanctuary for migratory birds. The area is positioned at the base of the hill leading up to the historic village of Mellieħa. The beach infrastructure includes extensive sunbed rentals and several seaside food outlets. Due to its orientation, it offers calm conditions even when winds are blowing from the west.
The elevated vantage point on the road leading down from Mellieħa village provides a panoramic view of the entire bay curve.
Bring water shoes if you prefer stability on the seabed, though the sand is largely uniform.
Utilize the designated swimming zones clearly marked by buoys to avoid areas reserved for watercraft.
Visit the nature reserve visitor center located across the main road to learn about the local ecosystem.
Avoid parking on the main road verge if the designated parking lots are full, as local authorities strictly enforce traffic regulations.
Lifeguard services are typically active only during the peak summer bathing season.
Cover up when leaving the immediate beach area to enter shops or restaurants; do not remove sand or pebbles from the beach.