# El Niño impact on Indonesia climate and agriculture > Live situation record from CLSTR: https://clstr.news/situations/el-nio-impact-on-indonesia-climate-and-agriculture > Updated: 2026-09-11T01:00:00.000Z. Sources: 37. Developments: 6. The El Niño phenomenon has strengthened in Indonesia, leading to forecasts of a delayed rainy season and a more intense dry season. Experts from the Institut Teknologi Bandung warned that the delay, potentially pushing the rainy season to early or mid-January 2027, could impact agricultural productivity. By late August, the Meteorology, Climatology, and Geophysics Agency (BMKG) confirmed that El Niño has reached a strong level, with a peak expected between August and September 2026 that may last until early 2027. This peak is projected to result in a drier dry season across approximately 25.41 percent of Indonesia’s land area. As of September 7, 2026, drought conditions in Central Java have expanded to affect 30 of 35 regencies, prompting the Regional Disaster Management Agency (BPBD) to distribute over 36 million liters of clean water to more than 1.1 million people. Environmental risks remain high; 14 hotspots were recently detected in Bulungan, North Kalimantan, while police in Riau are using drones to combat fires. To assist in Kalimantan, the Japanese government has deployed three CH-47 Chinook helicopters and 180 personnel. By early September 2026, BMKG reported highly variable weather patterns. While much of the country remains in a dry season, atmospheric dynamics like the Madden-Julian Oscillation, Kelvin waves, and cyclonic circulation are triggering localized rainfall, thunderstorms, and strong winds in parts of Sumatra, Kalimantan, West Java, and Papua. Conversely, regions in Nusa Tenggara, Sulawesi, and Papua are experiencing extreme heat, with temperatures exceeding 35 degrees Celsius. In Sampang, East Java, the dry season is expected to persist until December, leading to severe water shortages in both rural and urban areas. In response to the ongoing drought, the Ministry of Public Works has addressed impacts in 1,760 of 2,200 identified locations. ## Claims - Jakarta is expected to experience mostly sunny or partly cloudy weather on August 28, 2026. (corroborated by 2 sources) - Heavy rain is expected in Aceh and North Sumatra provinces. (corroborated by 2 sources) - Six regions in Maluku are predicted to have sunny weather on August 28, 2026. (single source) - Kota Sorong and Kabupaten Sorong are forecast to have partly cloudy weather on August 28, 2026. (single source) - Kota Malang is predicted to be dominated by sunny weather on August 28, 2026. (single source) - Sudjatmiko urged that BMKG's early warnings should serve as a basis for government policy and transportation safety decisions. (single source) - The Merah Putih Bridge in Klamana, Sorong, was inaugurated to improve transportation access for approximately 2,438 residents. (single source) - A very strong El Nino phenomenon is predicted to last until early 2027. (single source) - The peak of the dry season in Indonesia is expected to occur between August and September 2026. (single source) - The transition to the rainy season is predicted to occur between mid-October and late November 2026. (single source) - 30 out of 35 regencies and cities in Central Java are affected by drought. (single source) - Approximately 36.2 million liters of clean water have been distributed to drought-affected areas in Central Java. (single source) ## Timeline ### 2026-09-11: Indonesia implements emergency measures against El Nino drought Indonesia is deploying emergency drought and fire mitigation measures across agricultural and energy sectors to counter a strong El Nino phenomenon expected to persist into early 2027. 2 sources. https://clstr.news/cluster/indonesia-implements-emergency-measures-against-el-nino-drought ### 2026-09-09: Indonesia weather shows variable patterns with heatwaves and localized rain BMKG reports variable weather across Indonesia, with El Nino driving a prolonged dry season and heatwaves in some regions, while atmospheric dynamics trigger localized rain and storms in others. 9 sources. https://clstr.news/cluster/bmkg-warns-of-rain-and-strong-winds-in-parts-of-indonesia ### 2026-09-07: Indonesia faces extreme weather and El Nino risks through 2027 Indonesia faces extreme weather due to a strong El Nino lasting until 2027, causing droughts in Central Java and forest fires in Kalimantan, which Japan is helping to combat with helicopter support. 24 sources. https://clstr.news/cluster/bmkg-issues-weather-forecasts-for-yogyakarta-and-west-java ### 2026-09-03: El Nino threatens global weather stability and Indonesian inflation El Nino is projected to intensify through 2027, potentially becoming the strongest on record, while Bank Mandiri warns it could drive Indonesian inflation to 3.5 percent by late 2026. 4 sources. https://clstr.news/cluster/el-nino-threatens-global-weather-stability-and-indonesian-inflation ### 2026-08-27: Indonesia weather: BMKG warns of strong El Nino and reports varied regional conditions BMKG reports varied weather across Indonesia, including sunny conditions in Jakarta and Maluku, while warning of a very strong El Nino peak in September/October. Infrastructure improvements continue in Sorong. 9 sources. https://clstr.news/cluster/bmkg-reports-strong-el-nio-peak-and-dry-season-forecasts-for-indonesia ### 2026-08-13: El Nino strengthens, delaying Indonesia's rainy season Strengthening El Nino is predicted to delay Indonesia's rainy season until January 2027, threatening agricultural productivity and reducing rainfall levels in regions like West Java. 4 sources. https://clstr.news/cluster/el-nino-strengthens-delaying-indonesias-rainy-season --- Cite as: El Niño impact on Indonesia climate and agriculture. CLSTR, https://clstr.news/situations/el-nio-impact-on-indonesia-climate-and-agriculture