Peru

The eruption of the Tonga volcano triggered a tsunami in Peru, among other countries (e.g., Tonga, Fiji, American Samoa, Vanuatu, and along the Pacific rim, including damaging tsunamis in New Zealand, Japan, the United States, the Russian Far East, Chile).

The recorded height of the tsunami was:
- 2 m (6 ft 7 in) in Lambayeque;
- 0.68 m (2 ft 3 in) in the port of Callao;
- 0.72 m (2 ft 4 in) in Marcona District;
- 0.65 m (2 ft 2 in) in Paita.

According to the testimony of bathers, the sea came out almost fifty meters outside its natural shore and surprised bathers in areas such as Paracas, Yumaque and with less intensity in San Andres, Leticia and Pisco Playa.

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Two women in northern Peru drowned in the swell when 2 m (6 ft 7 in) waves hit Naylamp beach, Lambayeque, dragging a truck into the sea (the driver of the truck escaped).

Twenty-two ports along northern and central Peru were closed due to the tsunami.

Substantial material damage was inflicted on coastal businesses and the beach areas. Videos showed the tsunami flooding the streets.
Restaurants and boats in Lagunillas beach and San Andrés District were damaged by waves. Many beachgoers were evacuated to safety while businesses closed.

Damage to piers and some homes occurred in the capital, Lima. In some areas, boat owners dragged their boats onto shore to prevent the waves from damaging them.

The Peruvian Civil Defense Institute said on 17 January that an oil spill occurred at the La Pampilla refinery. The spill was caused by tsunami waves moving a ship while transporting oil onto the refinery.

The oil spill affected some 1,187 km2 (458 sq mi) of sea and 1,740 km2 (670 sq mi) of beach-coastal strip, and more than 500 ha (1,200 acres) of protected natural areas in Peru.