Beginning on 14 December 2014, a series of floods from the northeast monsoon hit Indonesia,[11] West Malaysia, Southern Thailand, and later Sri Lanka in South Asia.

[22] Hundreds of houses in the Bengkalis Regency of Riau were submerged waist-deep (1 metre (3.3 ft)), but the approximately 500 residents are still at home as there is no place to take refuge.

[6][7] Several Keretapi Tanah Melayu (KTM) intercity train services along the East Coast route were disrupted on 18 December following the floods.

[12][17][40] However, the exact numbers of evacuees, missing persons and deaths are unknown, as the Malaysian flood centre was unable to provide any accurate figures.

[41] Some victim were found in miserable condition after surviving on one meal of rice a day after being stranded in the floods, who was interviewed by Aaron Ngui.

[44] On 21 December, a Bell 206 helicopter which departed for relief missions crashed in Yala's Muang District due to bad weather, injuring four crewmen.

[45] Because of the incident, Thai southern army has imposed a ban on all types of aircraft from 22 to 26 December and were ordered to use only ground vehicles to patrol flooded areas.

[45] Eight of sixteen districts in Songkhla Province, including Hat Yai, Sadao, Rattaphum, Khuan Niang, Chana, Thepha, Na Thawi and Sabai Yoi also have been declared disaster zones.

[49] An estimated 1.1 million people were affected by torrential rainfall, widespread floods, landslides, mudslides and high winds since 19 December 2014.

With the flood situation being gradually normalised, people living in safety centres or with host families have begun to return home.

[52] In Thailand, sandbag barriers were stacked around Nong Chik Hospital in Pattani, with four pumps working around the clock to keep out the flood water.

Authorities also started to release excessive water from Bang Lang Dam which would later affect riverside communities on the banks of Pattani River in Bannang Sata and Krong Pinang District.

[59][60] Indonesia — Some Indonesian agencies prepared shelters in the affected districts, including at police and military headquarters and houses of worship.

[66] Thailand — Prime Minister Prayut Chan-o-cha has instructed related officials to quickly provide aid to victims in the southern floods.

[47] Deputy Minister of Interior Suthee Markboon has assigned the Disaster Prevention and Mitigation Office in each province to urgently deliver assistance to people affected by flooding, survey the damages and expedite a recovery plan.

[69] However, the Prime Minister later ended his vacation amidst criticism from the public when he was seen playing golf with Barack Obama in Hawaii, United States.

[70] Najib stressed that the golf game was necessary in establishing diplomatic ties with the United States and the event has been planned much earlier even before the flood started.