Weather Forecast, Sunday 17 May: Heavy to Very Heavy Rain Expected in NTB and Papua

The Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG) has issued an early warning regarding the potential for extreme weather across much of Indonesia on Sunday, 17 May 2026. The formation of a cyclonic circulation in the waters west of North Sumatra and the Makassar Strait is triggering significant cloud development and increased rainfall.

Based on validated data from the BMKG server as of 16 May 2026 at 22:10 WIB, weather conditions at several key locations show an increasing trend in humidity. In the Gambir area, Central Jakarta, the weather is overcast with a temperature of 26°C.

Meanwhile, in the Citarum area, Bandung, light rain has begun to fall, with air temperatures reaching 21°C.

The BMKG instructs people in the central and eastern regions of Indonesia to increase their preparedness. There is potential for heavy to very heavy rain that can trigger hydrometeorological disasters such as floods and landslides.

Here is a summary of the weather forecast for major cities in Indonesia valid on Sunday, 17 May 2026:

The formation of a convergence zone (wind meeting) extending from the west coast of Aceh to Papua is a major factor in increasing rainfall. The BMKG explained that the combination of cyclonic circulation and air mass confluence creates very unstable atmospheric conditions.

People are advised to remain vigilant against secondary impacts such as falling trees due to strong winds and transportation disruptions. Always monitor updated weather information through official BMKG channels to mitigate disaster risks independently.