Thailand declares disaster zones in eight provinces after floods kill at least 13 people, while the worst monsoon in decades hits Malaysia. (Reuters)

Torrential rains have deluged Sri Lanka, southern Thailand, Indonesia and Malaysia in recent days, leading to flooding throughout the region.

In Malaysia, the government called the flooding the worst in three decades. Over 100,000 people have been forced from their homes and five have died. Malaysian Prime Minister Najib Razak has cut short a visit with President Obama in Hawaii to deal with the crisis.

“I’m deeply concerned by the floods and am returning to see the situation for myself. My thoughts and prayers are with all who are suffering,” Najib said in posts on social media Friday.

President Barack Obama plays golf with Malaysian Prime Minister Najib Razak, right, Wednesday, Dec. 24, 2014, at Marine Corps Base Hawaii’s Kaneohe Klipper Golf Course in Kaneohe, Hawaii during the Obama family vacation. (AP Photo/Jacquelyn Martin)

Southern Thailand has also been hit hard by relentless rain, where at least 13 have died from recent flooding according to Reuters.

“The daily rainfall totals across the south of Thailand have been in excess of 50mm [2 inches] for the last few weeks,” reports Al Jazeera. “On Monday, Pattani recorded 84mm [3.3 inches] of rain whilst Hat Yai had 92mm [3.6 inches]. The floodwaters now stand waist-deep or higher in many areas.”

Christians attend the mass service at a flooded church in Bandung, Indonesia, on December 25, 2014.( TIMUR MATAHARI/AFP/Getty Images)

About 34,000 people were forced from their homes in Indonesia this week, and a state of emergency was declared in Bandung, a sprawling city with a population of over 8.6 million.

Indonesian police help prisoners who were evacuated from a local prison due to flooding in Lhoksukon, Aceh province December 23, 2014. A total of 200 prisoners were forced to evacuate after flood waters from heavy rains reached 2 meters high. Picture taken December 23, 2014. (REUTERS/Antara Foto/Rahmad)

In Sri Lanka, floods and mudslides have killed at least 14 people and driven 80,000 people from their homes according to the AFP news service.

A Sri Lanka Army media unit handout image released on 26 December 2014 shows army personnel engaged in rescue missions in the highly flooded Vanni area in Polonnaruwa, Sri Lanka, December 25, 2014. Thousands are displaced due to the untimely rains and heavy floods in most areas of the island. (EPA/ARMY MEDIA UNIT HANDOUT)

Heavy rains are common in Southeast Asia at this time of year due to the northeast monsoon, although moisture levels are currently above normal for the time of year.  More waves of heavy rain may affect the region through the weekend.

European model shows waves of heavy rain affecting parts of the region through this weekend. (

Parts of this same region afflicted by flooding are also commemorating the 10-year anniversary of the Indian Ocean tsunami that claimed over a quarter million lives.