More heavy rain is forecast, reservoirs are at full capacity and rivers are overflowing.

Water has inundated 58 of 77 provinces, with 25 still badly hit. Huge tracts of farmland are submerged, threatening this year's rice crop.

Water is also lapping at the walls of Buddhist temples in the ancient capital of Ayutthaya, a World Heritage Site.

Officials are struggling to drain water from one of the ancient city's best known temples, Wat Chaiwatthanaram, after a makeshift dyke on the Chao Phraya river was breached.

The northern city of Chiang Mai, another popular tourist destination, has also been badly hit by floods.

The capital Bangkok has so far been spared, but it is under threat as tropical storm Nalgae is expected to bring more in the next few days.

Flooding has affected more than two million people.

The government says it will draft a plan to improve prevention measures and warning systems.