On Sunday, May 7, 2026, the Indonesian Meteorology, Climatology, and Geophysics Agency (BMKG) issued a widespread weather forecast predicting rain across the majority of Indonesia. BMKG forecaster Bintari, in a public briefing, warned residents to prepare for varying conditions ranging from light showers to potential thunderstorms and heavy downpours across several major islands.
Regional Weather Forecasts for May 7, 2026
According to the BMKG, weather patterns across the archipelago are varied for this Sunday:
- Sumatra: Jambi City is expected to be cloudy. Light rain is forecast for Padang, Pangkal Pinang, Bengkulu, and Palembang. Medan City may see moderate rain, while residents in Banda Aceh, Pekanbaru, Tanjung Pinang, and Bandar Lampung are advised to watch for potential thunderstorms.
- Java: Conditions are largely overcast. Surabaya and Semarang are expected to be cloudy, while Jakarta, Serang, Bandung, and Yogyakarta will likely be shrouded in thick clouds.
- Kalimantan: Light rain is anticipated across major cities, including Pontianak, Samarinda, Tanjung Selor, Palangkaraya, and Banjarmasin.
- Bali and Nusa Tenggara: Mataram City is forecast to be sunny with clouds. Kupang City will be cloudy, while Denpasar is expected to be shrouded in thick clouds.
- Sulawesi: Kendari City will be cloudy, while Gorontalo and Makassar are expected to be heavily overcast. Palu and Manado are likely to see light rain, with moderate rain expected in Mamuju.
- Maluku and Papua: Ambon City is heavily overcast, and Ternate may see light rain. In Papua, Jayapura is cloudy, while Manokwari and Merauke will be shrouded in thick clouds. Light rain is likely in Sorong and Jayawijaya, with moderate rain expected in Nabire.
Impact and Safety Warnings
The BMKG has specifically signaled a need for increased vigilance in three regions due to the threat of heavy to very heavy rainfall: North Sumatra, Central Kalimantan, and West Sulawesi. These areas face the highest risk of weather-related disruption according to the agency’s latest data.
What May Happen Next
Given these forecasts, residents in the identified regions of North Sumatra, Central Kalimantan, and West Sulawesi should monitor local updates for potential weather warnings. If the predicted heavy rainfall persists, it could lead to localized flooding or travel disruptions in those specific areas. As the BMKG continues its monitoring, the agency may release further advisories if the intensity of these systems shifts throughout the day.
