Flood water has now spread to Ranong, bringing total southern provinces now stricken by floods to 10.
Although floods in many urban areas in towns have receded with business slowly returning, but in most suburban areas the situation remains critical.
Nakhon Si Thammarat airport remained closed today as flood water still submeges its runway.
The flood level at the runway rose higher today from yesterday, prompting airport authorities to watch the water closely before making announcement of any change on a daily basis.
It could not say exactly when to open the airport again.
Trains from Bangkok to the South could travel only to Chumphon station as several sections of the rail lines are still submerged.
The State Railways of Thailand said no bus transportation to other destinations will be provided after the trains reach Chumphon.
Asia 41 highway is reported to be passabke for all vehicles this morning as flood water has receded.
Meanwhile flood situation in Lang Suan district of Chumphon has eased this morning with flood water in the town completely receded.
Townspeople are cleaning their houses and shops.
But authorities still warn people to prepare as more rains are expected as new round of flash flood could be possible.
Ranong became the latest southern provinces to be hit by flood today due to heavy rains.
Overall flood situation in the southern region remains critical, particularly in Phatthalung, Narathwat, Nakhon Si Thammarat and Chumphon where many areas are still cut off by floods
In Chumphon four districts are still submerged.
Yesterday Lang Suan district was hard-hit after forest runoff flooded government offices and hospital in municipal area in two metres high of floodwater.
In Nakhon Si Thammarat's Cha-uat district, it was still facing critical flood situation as the Cha-uat district municipality market was under more than two metres high of floodwater.
The strong tide of the floodwater has damaged a bridge on Ban Tul- Cha-uat road. The military have deployed the soldiers to build the temporary bridge for the villagers to travel.
In Trang, almost 3,000 households along the both sides of the Trang river bank urgently moved their belongings into higher ground.
In Phatthalung, the inundation has widened particularly in the provincial seat, Khuan Khanun and Pa Phayom which were severely affected from the heavy rain.
The flood has caused the economic area in the provincial seat, the government offices, hospital under almost two metres of floodwater. The authorities have helped the villagers to evacuate into the safe place.
In Surat Thani, flood situation has relatively eased and authorities are assessing flood damages in order to give assistance to affected people.
A landslide had blocked the road and cut off more than 130 households from outside world for three days. More than 100,000 chicken in the farms were killed by the flood and sending the smell of rotten chicken around the area. Authorities have to help bury the dead chicken to prevent the disease.
Source: Thai Public Broadcasting Service (Thai PBS)