Weather Forecast 29 May 2026: Tropical Cyclone Jangmi Triggers Thunderstorms Across Indonesia
The Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG) has issued an early warning for Friday, 29 May 2026. The presence of Tropical Cyclone Jangmi in the northern Philippines is the main cause of increased potential for extreme weather across several regions of Indonesia.
According to BMKG’s latest monitoring, Tropical Cyclone Jangmi has been detected north of the Philippines near Papua with maximum wind speeds of 35 knots and a minimum air pressure of 998 hPa. Over the next 48 to 72 hours, the system is forecast to strengthen and move northwest.
This phenomenon has triggered the formation of convergence zones (wind meeting areas) and confluence stretching from the northern Pacific Ocean, Maluku, to Papua. Additionally, cyclonic circulation in the South China Sea has formed another convergence zone from Natuna Island to Sumatra and Java.
Unstable atmospheric conditions have significantly increased the growth of rain clouds.
BMKG advises the public to remain vigilant against potential hydro-meteorological disasters due to extreme weather. Floods, landslides, fallen trees, and waterlogging may occur, particularly in disaster-prone areas.
Residents should always monitor weather updates through the BMKG Info app or the official website www.bmkg.go.id for real-time data before engaging in outdoor activities.
- What is the main cause of heavy rain in Indonesia currently?
The primary cause is Tropical Cyclone Jangmi in the northern Philippines, which attracts air masses and creates wind convergence zones in Indonesian regions.
- Will Jakarta experience rain on 29 May 2026?
Yes, according to BMKG, Jakarta is forecast to experience thunderstorms.
- Which cities should be cautious of thunderstorms?
Major cities including Jakarta, Surabaya, Yogyakarta, Denpasar, Makassar, and Banda Aceh.