Indonesia: Floods and Landslides - Nov 2025

On 13 November, a landslide occurred in Majenang district, Cilacap regency, Central Java, Indonesia. The National Disaster Management Agency (BNPB), by 16 November, reported 13 fatalities and 10 people who missing [...] The ASEAN Disaster Information Network (ADINet) reported nine people injured, 106 people displaced as 16 houses were destroyed. [...] The regency of Cilacap declared a state of emergency for floods and landslides for 30 days, from 14 November to 14 December 2025.

Heavy rainfall and strong winds have affected the Sumatra island, north-western Indonesia over the previous week, which caused floods and landslides resulted in casualties and damage. The severe weather was also due to the passage of Tropical Storm SENYAR over the northern Sumatra island from 24 to 27 November. The Indonesian National Board for Disaster Management (BNPB) and media reported, as of 28 November, up to 60 fatalities, 59 people missing, approximately 8,000 evacuated people and about 2,000 damaged buildings across the provinces of North Sumatra, West Sumatra and Aceh. The worst affected regencies across the North Sumatra province are Sibolga - with 47 fatalities - Central Tapanuli, South Tapanuli, North Tapanuli, and Mandailing Natal. (ECHO, 28 Nov 2025)

The humanitarian impact is increasing on Sumatra Island following recent intense rainfall. The worst-affected provinces are Aceh, North Sumatra, and West Sumatra. According to the BNPB, 442 people have died: 217 in North Sumatra, 96 in Aceh, and 129 in West Sumatra; 402 people remain missing. Additionally, the IFRC reports 646 injured people, nearly 300,000 displaced individuals, and 1.1 million affected. (ECHO, 1 Dec 2025)

[...], the International Federation of Red Cross and Red Crescent Societies (IFRC) reports 593 fatalities, 468 missing people, and 2,600 injured across the provinces of West Sumatra, North Sumatra, and Aceh. Additionally, 1.5 million people have been affected, and almost 600,000 have been displaced. (ECHO, 2 Dec 2025)

BNPB reported that as of December 4, the death toll had reached 836 in 50 affected districts/cities in the three provinces. A total of 518 people are missing. As of December 3, 2,664 people were reported injured. The number of IDPs has reached 881,035 people as of December 4. In North Sumatra, there are 40,355 IDPs; in Aceh, 817,856; and in West Sumatra, 22,824. (OCHA, 4 Dec 2025)

The humanitarian impact in Indonesia continues to worsen following recent floods in three provinces of Sumatra, in Aceh, West Sumatra, and North Sumatra. According to the National Disaster Management Authority (BNPB), 969 people have died, with the highest fatalities in Agam Regency (181), Aceh Utara (138), and Tapanuli Tengah (110). 252 people remain missing, and almost 158,000 houses have been damaged. Approximately 890,000 people have been evacuated, with the majority in Aceh Tamiang, Aceh Timur, and Aceh Utara. (ECHO, 10 Dec 2025)

The Indonesian National Board for Disaster Management (BNPB) reports, as of 15 December, 1,016 fatalities, of whom 424 are across the Aceh province, 349 across the North Sumatra province and 243 more in the West Sumatra province. In addition, 212 missing people were reported across the three aforementioned affected provinces. The BNPB also reports 624,670 displaced people. (ECHO, 15 Dec 2025)

In recent days, parts of Java and Kalimantan have experienced heavy rainfall and strong winds, leading to floods and severe weather-related incidents. According to the national authorities, one person was injured and 60 houses were damaged due to extreme weather in Sampang Regency, East Java. In Jember Regency, East Java, 14 people were evacuated as nearly 1 300 houses were flooded, while over 1 500 homes were impacted in Banyuwangi Regency. In South Kalimantan, floods affected 289 houses in Banjar Regency. Meanwhile, the death toll from flooding in northwestern Sumatra, which started in mid-November, has risen to 1 059, with over 50 people missing. (ECHO, 18 Dec 2025)

According to the National Disaster Mitigation Agency (BNPB), Bima Regency in West Nusa Tenggara Province has been impacted, with nearly 2000 people affected and 603 houses damaged. Additionally, North Sulawesi, North Sumatra, and East Java provinces were also affected by flooding, with over 120 houses damaged. (ECHO, 23 Dec 2025)

As of December 28, 2025, BNPB reported that the number of IDPs had decreased to 399,172 people. The death toll has reached 1,140, and 163 people are missing in the three provinces. 19 districts/cities have established an Emergency Transition to Recovery Status. Four districts/cities are in the process of determining the Emergency Transition Status to Recovery. (IHCP, 30 Dec 2025)

As of January 1, 2026, the National Disaster Management Agency (BNPB) reported that the number of displaced persons had decreased to 380,360. The death toll had reached 1,157, and 165 people were missing in the three provinces. The most significant number of displaced persons was in Aceh Province, with 356,655 displaced. In North Sumatra, 13,770 people were displaced, and in West Sumatra, there were 9,935 displaced. 23 districts/cities have declared a transition from emergency to recovery status (6 in Aceh, 8 in North Sumatra, and 9 in West Sumatra). Meanwhile, seven districts/cities are in the process of declaring a transition from emergency to recovery status (one in Aceh, five in North Sumatra, and one in West Sumatra). (IHCP, 2 Jan 2026)

On 6 January, flash floods caused by heavy rainfall have stuck Sitaro Islands regency, North Sulawesi province, central Indonesia, resulting in fatalities and damage. According to the National Agency for Disaster Countermeasure (BNPB), as of 7 January, 16 people were killed, 22 people injured, and 682 people displaced. (ECHO, 7 Jan 2026) On 7 January 2026, a severe flood event affected West Halmahera Regency in North Maluku Province (central-eastern Indonesia), resulting in casualties, displacement, and infrastructure damage. According to the ASEAN Disaster Information Network (ADINet), two fatalities have been reported, with 1,500 displaced people and approximately 3,500 affected individuals. Residential areas and road access have been inundated in multiple locations. (ECHO, 8 Jan 2026)

As of 12 January 2026, the total number of fatalities has reached 1,180, with 145 individuals reported missing and approximately 238,000 people displaced. Damaged infrastructure included 175,000 houses (53,400 heavily damaged, 45,100 moderately damaged, and 76,600 slightly damaged), 215 health facilities, approximately 3,200 educational facilities, 803 places of worship, 776 bridges, and around 2.1K roads. (AHA Centre, 12 Jan 2026)

As of January 14, 2026, the National Disaster Management Agency (BNPB) reported that the number of displaced persons had decreased to 131,500. The death toll had reached 1,190, with 141 missing across the three provinces. The largest number of displaced persons was in Aceh Province, with 107,100 IDPs. In North Sumatra, 13,600 IDPs, and in West Sumatra, 10,900 IDPs. (OCHA, 14 Jan 2026)

Since 17 January, heavy rainfall and consequent flooding affected west and central Java, Indonesia. The ASEAN Disaster Information Network reported two fatalities, 7,954 displaced and 73,261 affected people in West Java; 4,910 people displaced and 88,941 affected in Central Java. (ECHO, 20 Jan 2026) As of 21 January, ADINet reported more than 2,400 people internally displaced, almost 14 000 people affected, and roughly 5,000 houses damaged or destroyed. (ECHO, 21 Jan 2026)

A landslide triggered by high-intensity rainfall occurred at approximately 0230H UTC+7 in Cisarua Sub-district, West Bandung Regency, West Java Province. According to BNPB, as of 25 January, a total of 17 casualties were reported, and search and rescue (SAR) operations continued, with 23 people rescued and 74 persons still reported missing as of the reporting time. Approximately 666 people remained displaced across 2 evacuation centres, and 52 houses had been reported as heavily damaged. (AHA Centre, 25 Jan 2026)

As of January 23, 2026, [...] the National Disaster Management Agency (BNPB) reported that the number of displaced persons (IDPs) had decreased to 113,900. The death toll has reached 1,200, with 143 people missing in the three provinces. The largest number of displaced persons is in Aceh Province (91,703 IDPs). In North Sumatra, 11,346 IDPs, and in West Sumatra, 10,854 IDPs. A total of 175,050 houses have been damaged, with 53,412 houses severely damaged, 76,553 lightly damaged, and 45,085 moderately damaged. The number of severely damaged houses in Aceh reached 32,084. Meanwhile, 6,074 houses were severely damaged in North Sumatra and 4,742 in West Sumatra. [...] As of January 21, 37 districts/cities have declared a transition from emergency to recovery (12 in Aceh, 14 in North Sumatra, and 11 in West Sumatra), and 6 regions in Aceh have extended their emergency response status. (OCHA, 27 Jan 2026)

The death toll continued to rise after the massive landslide triggered by heavy rainfall on 24 January in Pasirlangu Village, Cisarua sub‑district, West Bandung Regency, West Java province. According to the National Agency for Disaster Countermeasure (BNPB), after four days of search operations, 48 people had been confirmed dead. As of 28 January, more than 30 people were missing. (ECHO, 28 Jan 2026)

Very heavy rainfall has been affecting the Java island (central Indonesia) since 28 January, causing floods, flash floods and overflowing rivers (in particular the Cilanang, Srenseng and Medana rivers) that have resulted in population displacement and damage. The most affected area includes the Greater Jakarta area and the Indramayu regency (West Java province). The ASEAN Disaster Information Network (ADINet) reports, as of 3 February, nearly 1 700 displaced people, of whom a number are across 11 evacuation centres throughout the island. In addition, ADINet also reports a total of more than 20 600 affected people across the West Java, Central Java, East Java and Banten provinces and the Greater Jakarta area. Nearly 3 150 damaged houses were also reported. (ECHO, 3 Feb 2026)

Since 7 February, heavy rainfall has triggered floods in Central Java, Banten, and West Nusa Tenggara in southern Indonesia, affecting thousands. According to the ASEAN Disaster Information Network (ADINet), a flash flood in Sumbawa (West Nusa Tenggara) affected 4 572 people, while rising river levels in Pandeglang (Banten) affected 1 869 individuals. Meanwhile, in Kendal (Central Java), 1 700 people were affected by flooding due to persistent heavy rainfall. (ECHO, 12 Feb 2026)

From 12 to 13 February, heavy rains and overflowing rivers caused severe flooding in Indonesia’s East and West Nusa Tenggara provinces, leaving one person missing and residents affected. According to the ASEAN Disaster Information Network (ADINet) on 13 February, the event affected a total of 1 006 people in West Nusa Tenggara’s Bima Regency, where a bridge linking Sumi and Nggelu villages, a school, and three roads were also damaged. In neighboring East Nusa Tenggara’s Malaka Regency, 120 people were reported affected. (ECHO, 19 Feb 2026)

In the recent days, the Special Region of Yogyakarta (DIY) on central‑southern Java, experienced heavy rain and strong winds, which caused severe weather‑related incidents and landslides that resulted in casualties and damage. According to the ASEAN Disaster Information Network (ADINET), in the town of Bantul three people have been injured, 208 were affected as well as 52 houses as a result of the severe weather conditions. In the neighboring Gunung Kidul Regency, landslides destroyed one house, damaged thirty more, affected 165 people and displaced 113 residents. (ECHO, 20 Feb 2026)

Heavy rain and strong winds have been affecting Java Island and the Lesser Sunda Islands, causing severe weather‑related incidents and floods that have resulted in casualties and damage. National authorities report that 31 people have died and five others have been displaced by the heavy rain and strong winds in Singasari Village, Karanglewas District, Central Java Province. In addition, more than 1,500 people were affected by flooding in at least three villages of West Nusa Tenggara Province. (ECHO, 24 Feb 2026)

[...] flooding occurred on 24 February at 2100H (UTC+7) after rising river levels inundated residential areas with water depths of 1-3 m. The flood affected 10 sub-districts in Nunukan Regency, including Lumbis Hulu, Lumbis Pensiangan, Lumbis Ogong, Lumbis, Sembakung Atulai, Sembakung, Krayan, Krayan Timur, Krayan Barat, and Sebuku. As of 1 March at 2218H (UTC+7), BNPB reported that around 4K households (12.5K people) were affected, with 30 people displaced to BPBD post in Lumbis. Reported damage includes 10 businesses, 17 educational facilities, 12 health facilities, 31 government offices, 18 public facilities, 19 places of worship, and one electricity pole. (AHA Centre, 3 Mar 2026)

After the lahar event triggered by heavy rainfall on 3 March along the western slope of Mount Merapi, the death toll rose to two, two others are still missing, and six people were injured in the Magelang regency. National authorities and the ASEAN Disaster Information Network (ADINet) also reported that the event affected 133 people, 33 houses, four bridges and four roads across the regencies of Magelang and Kebumen (Central Java province). In addition, Central Java experienced strong winds that caused severe weather‑related incidents, resulting in at least three fatalities in the Pemalang regency. (ECHO, 5 Mar 2026)

Heavy rainfall and strong winds were reported across various regencies and cities in Java, Bali, and West Nusa Tenggara. According to the BMKG, these phenomena were indirect effects of the development of INVEST 90S over the waters south of Java and Bali. [...] According to BNPB, these disasters resulted in 18 fatalities, 10 missing persons, and 29 injured. More than 23,000 families (84,000 people) were affected, with over 1,000 persons displaced (AHA Centre, 9 Mar 2026)

In recent days heavy rain has caused flooding in West Java Province, leading to casualties and damage. According to the ASEAN Disaster Information Network (ADINet), three people have been injured and more than 400 individuals have been affected in Bandung city, where one house was destroyed. In Bogor Regency, the flood has affected over 300 people. (ECHO, 13 Mar 2026)

Heavy rainfall has been affecting the southern Sumatra island and the neighbouring western Java island since 4 April, causing floods, flash floods and overflowing rivers that have resulted in casualties, population displacement and damage. In Sumatra, the ASEAN Disaster Information Network (ADINet) reports as of 7 April, one still missing person, 3 801 affected people and 717 damaged houses across the Lampung and Bengkulu provinces. In Java, ADINet reports 360 displaced people (of whom 120 evacuated in two evacuation centres), more than 11 100 affected people and over 3 000 damaged houses across the Banten and West Java provinces. (ECHO, 7 Apr 2026)

[...] flooding has been affecting West and Central Java provinces since 10 April causing casualties and damage. According to ADINet, one person died and one has been injured in Blora regency (Central Java), 73 people have been displaced in Bandung regency in West Java province, and a total of 3 503 people have been affected. In addition, 922 houses have been affected in Bandung regency. (ECHO, 13 Apr 2026)

On 14 April, Surakarta city in Central Java, Indonesia, has been affected by heavy rainfall and the overflow of the Kali Jenes river, triggering floods and resulting in displacement. According to the ASEAN Disaster Information Network (ADINet), as of 14 April, 109 people were displaced and a total of 2 860 affected. (ECHO, 16 Apr 2026)

On 22 April, heavy rainfall triggered widespread flooding across Indonesia, causing casualties, displacement and damage to infrastructure. The ASEAN Disaster Information Network (ADINet) reports that, in North Sumatra, one person was injured and a total of 600 individuals were affected. Three houses were completely destroyed, together with a bridge and a school, while another 150 houses sustained damage. In North Sulawesi, coastal flooding displaced 16 people and impacted 236 residents living in 59 homes. In East Java, the overflow of the Welang River Basin affected 5 420 people across 1 355 houses, while in South Jakarta, flooding caused by the Ciliwung River’s overflow affected 2 513 people living in 937 houses. (ECHO, 24 Apr 2026)

Sarolangun Regency (Jambi Province, Sumatra Island) has experienced heavy rainfall, leading to flooding and resulting damage. According to the ASEAN Disaster Information Network (ADINet), almost 6 800 people have been affected, five houses have been destroyed, and four others have been damaged. (ECHO, 28 Apr 2026)

[...] heavy rain and strong winds have affected the provinces of East Nusa Tenggara and Central Java, causing floods and resulting in casualties and damage. According to the ASEAN Disaster Information Network (ADINet), one person died and 562 people have been affected by floods in Lembata (East Nusa Tenggara Province, eastern Indonesia). In Banjarnegara Regency (Central Java), strong winds injured two people and affected around 100 others. (ECHO, 30 Apr 2026)