TEMPO.CO, Jakarta - The Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG) predicts that most areas of West Java will experience moderate rainfall of 50-150 millimeters in the first decade of February 1 to 10, 2026. Meanwhile, several areas, such as North Bekasi, East Purwakarta, Sumedang, Majalengka, Central Cirebon, Kuningan, and North Ciamis, are predicted to experience heavy rainfall of 200-300 millimeters per decade.
According to the West Java BMKG Climatology Station, the majority of West Java, or 84 percent, will experience moderate rainfall. This includes the cities and regencies of Bogor, Depok, parts of Bekasi, Karawang, Subang, Indramayu, parts of Cirebon, Sukabumi, Cianjur, most of Purwakarta, Greater Bandung, Garut, Tasikmalaya, Pangandaran, Banjar, and South Ciamis.
Meanwhile, 13 percent of the region will experience high rainfall, namely in North Bekasi, East Purwakarta, Sumedang, Majalengka, Central Cirebon, Kuningan, and North Ciamis. Meanwhile, 3 percent of the region is predicted to experience low rainfall, ranging from 0 to 50 millimeters per decade, namely in southern Cianjur.
According to the Meteorology, Climatology, and Geophysics Agency (BMKG), areas advised to be alert for high rainfall include Bekasi, Karawang, Sumedang, Cirebon, and Ciamis regencies. Majalengka and Kuningan should be on high alert.
Diana Hertanti, a weather forecaster from the BMKG West Java Climatology Station, stated that atmospheric dynamics are predicted to still support the potential for water vapor supply and the growth of convective clouds, as well as increased rainfall in parts of West Java. This is due to relatively warm sea surface temperatures around Indonesian waters.
Furthermore, wind gyrations and convergence zones are still likely to form in West Java. "Atmospheric waves are predicted to be active in parts of West Java at the beginning and end of this week," Diana said in a written statement on Sunday, February 1, 2026.
Meanwhile, atmospheric lability, which is in the mild to strong category, increases the potential for convective cloud formation on a local scale.
The potential for moderate to very heavy rain accompanied by lightning and strong winds is likely to occur on a local scale and for short durations during the week of February 2-8, 2026, namely on February 2 in Bekasi, Bogor, Depok, Karawang, Purwakarta, Subang, Cianjur, Sukabumi, Bandung, West Bandung, Sumedang, Cirebon, Indramayu, Majalengka, Kuningan, Garut, Tasikmalaya, Ciamis, Banjar, and Pangandaran.
Meanwhile, on February 3 in Depok, Subang, Cianjur, Bandung, West Bandung, Sumedang, Cirebon, Majalengka, Kuningan, Garut, Tasikmalaya, and Ciamis. On February 4th, in Bogor, Purwakarta, Subang, Cianjur, Sukabumi, Bandung, Sumedang, Majalengka, Kuningan, Garut, Tasikmalaya, Ciamis, and Banjar. Thursday, February 5th, in Purwakarta, Cianjur, Sukabumi, Bandung Regency, Cirebon Regency, Kuningan, and Garut.
The potential for moderate to very heavy rain accompanied by lightning and strong winds is localized and of short duration on Friday, February 6th, in Bogor Regency, Purwakarta, Subang, Cianjur, Sukabumi Regency, Cimahi City, Sumedang, Cirebon, Kuningan, Garut, Tasikmalaya, Ciamis, and Banjar.
The same potential is present on February 7th in Bekasi Regency, Bogor Regency, Purwakarta, Subang, Cianjur, Sukabumi Regency, Sumedang, Cirebon Regency, Kuningan, Garut, Tasikmalaya Regency, and Ciamis. On February 8th, in Bekasi, Depok, Cianjur, Sukabumi, Garut, Tasikmalaya, and Ciamis,
The Meteorology, Climatology, and Geophysics Agency (BMKG) urges the public and relevant agencies to remain vigilant for weather conditions that can change at any time and have the potential to cause hydrometeorological disasters, such as heavy to very heavy rain, strong winds, flooding, landslides, and fallen trees.
Read: Heavy Rain Forecast Across Indonesia This Week, Jakarta Stays on Alert
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