According to reports, the Meteorology, Climatology and Geophysics Agency (BMKG) predicts that most areas in Indonesia will experience rainfall on Monday (18 August), with varying intensities.

• Several major cities in Sumatra are expected to experience light rainfall, including Palembang, South Sumatra, and Tanjung Pinang, Riau Islands. Moderate rainfall is likely to impact Pangkal Pinang, Bangka Belitung Islands. Rain accompanied by lightning should be expected in Jambi, Bengkulu, and Bandar Lampung
• Light rainfall is forecast for Surabaya, East Java. Meanwhile, thunderstorms are likely to impact Semarang, Central Java, and Yogyakarta.
• In Bali and Nusa Tenggara, Mataram, West Nusa Tenggara, has the potential for rainfall accompanied by lightning. Furthermore, in Kalimantan, light rainfall is forecast for Tanjung Selor, North Kalimantan; Samarinda, East Kalimantan; Palangkaraya, Central Kalimantan; Banjarmasin, South Kalimantan; and Pontianak, West Kalimantan.
• Light rainfall is forecast for Makassar, South Sulawesi; Kendari, Southeast Sulawesi; Palu, Central Sulawesi; and Gorontalo. Moderate rainfall is likely to impact Mamuju, West Sulawesi. Meanwhile, rainfall accompanied by lightning is likely in Manado, North Sulawesi.
• In eastern Indonesia, light rainfall is forecast for Ternate, North Maluku; Sorong and Manokwari, West Papua; and Nabire, Jayapura, and Jayawijaya in Papua. Rainfall accompanied by lightning is likely to impact Ambon, Maluku, and Merauke, South Papua.