TEMPO.CO, Jakarta - Indonesia's Meteorology, Climatology, and Geophysics Agency (BMKG) has forecast that most parts of West Java will experience low-category rainfall by the end of June 2026. However, some areas remain at risk of moderate to heavy rain over three consecutive days earlier this week.
West Java Rainfall Forecast
From June 21-30, the BMKG Climatology Station in West Java predicts that around 89 percent of the province will receive low-category rainfall, estimated at 0-50 millimeters per 10 days. Meanwhile, around 11 percent of the region has the potential to experience moderate rainfall of 50-75 millimeters.
Areas with the potential for moderate rainfall include Bogor City, most parts of Bogor Regency, North Sukabumi, South Tasikmalaya, parts of Garut, and Pangandaran. The longest dry period was recorded in Karang Kendal, Cirebon Regency, which experienced 25 consecutive rainless days.
BMKG said the current global climate analysis indicates that the El Niño phenomenon could reduce rainfall in several parts of Indonesia, including West Java.
However, BMKG West Java Climatology Station forecaster Alita Nuraeni said several atmospheric conditions are still supporting increased moisture supply and local convective cloud growth in some areas over the next week.
Warm sea surface temperatures in several Indonesian waters are contributing to water vapor availability for cloud formation, while atmospheric instability levels vary from light to strong.
“Although overall rainfall in West Java is tending to decrease, the potential for light to moderate rainfall can still occur locally, especially in the afternoon to evening in some areas of West Java,” Alita said in a statement on Sunday, June 21, 2026.
Potential Heavy Rain and Thunderstorms
BMKG also warned of the possibility of moderate to heavy rainfall accompanied by lightning and strong winds on a local and short-duration basis.
On Monday, June 22, the weather potential is expected in Bogor Regency, Depok City, Purwakarta, Subang, Cianjur, Sukabumi Regency, Bandung Regency, West Bandung, Majalengka, Kuningan, Garut, Tasikmalaya Regency, and Ciamis.
Light rain is possible between 07:00 AM and 01:00 PM WIB in parts of Bekasi Regency, Bogor Regency, Sukabumi Regency, Cianjur, Karawang, Subang, Purwakarta, Sumedang, Majalengka, and Kuningan.
Between 01:00 PM and 07:00 PM WIB, light to moderate rain is expected in parts of Bogor City, Bekasi Regency and City, Sukabumi Regency and City, Cianjur, Karawang, Subang, Purwakarta, West Bandung, Bandung Regency and City, Garut, Tasikmalaya Regency, Ciamis, Banjar City, Sumedang, Majalengka, Kuningan, and Indramayu Regency.
Moderate to heavy rain may occur locally in parts of Bogor Regency and Depok City.
From 07:00 PM to 01:00 AM WIB, light to moderate rain may occur in parts of Bogor City, Bekasi City, Sukabumi Regency, Subang, Purwakarta, West Bandung, Bandung Regency and City, Garut, Tasikmalaya, Ciamis, Majalengka, Kuningan, Indramayu, and Cirebon Regency and City.
Meanwhile, moderate to heavy rain is possible locally in parts of Bogor Regency, Bekasi Regency, Karawang, Cianjur Regency, and Sumedang.
Weather Outlook for Tuesday and Wednesday in West Java
The potential for moderate to heavy rainfall accompanied by lightning and strong winds on Tuesday, June 23, is expected in Bogor Regency, Cianjur, Sukabumi Regency and City, Bandung Regency, West Bandung, Cirebon Regency, Garut, Tasikmalaya Regency, Ciamis, and Banjar City.
On Wednesday, June 24, similar weather conditions are expected in Bogor Regency, Cianjur, Sukabumi Regency, Bandung Regency, West Bandung, Cimahi City, Indramayu Regency, Kuningan, Garut Regency, and Tasikmalaya Regency.
Read: BMKG Predicts Jakarta Will Be Cloudy in the Morning, Partly Rainy in the Afternoon
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