Tasi Tibalau, Coastal beach in Gugleur, Timor-Leste.

Tasi Tibalau is a beach on the Savu Sea in Suco Gugleur, Maubara administrative post, Liquiçá municipality. Its eastern end is closed by the Tibalau rock standing in the sea, at the edge of a natural pool formed by smaller rocks; the Tetum name means "Tibalau Sea". Further east the Maraes river reaches the sea.

Tasi Tibalau lies in Suco Gugleur, in the Maubara administrative post of Liquiçá municipality, on the Savu Sea coast. The beach is bounded to the east by the Tibalau rock, which stands at the end of a natural pool formed by smaller rocks; further east the Maraes river reaches the sea. The site is known as a lulik place, and local people hold that the natural forces there are responsible when rain fails or animals disappear.

Local people view the natural pool beside Tibalau rock as a sacred place and maintain traditional beliefs that discourage swimming in these waters. This respect for the site shapes how visitors interact with the beach today.

The beach is about one hour's drive from Dili, making it a convenient destination for visitors seeking coastal recreation outside urban areas. The accessible location and nearby river mouth create varied conditions depending on tide and season.

Where the Marae River meets the sea, the water creates unusual color patterns that shift with light and tides, making the view change throughout the day. This interaction supports the diverse marine life in the coastal zone.