As of Friday, July 31, 2026, several parts of Indonesia remain at risk of moderate to heavy rain and... As of Friday, July 31, 2026, several parts of Indonesia remain at risk of moderate to heavy rain and strong winds even though the country is already deep into the dry season. BMKG says localized heavy rainfall can still develop in certain areas, creating short-term risks for travel and daily activities.
BMKG's monitoring for the second ten-day period of July shows that dry conditions are becoming increasingly dominant across the country. Around 92.93% of Indonesia's territory recorded low rainfall, while moderate rainfall covered only 6.63% and high rainfall just 0.45%. The agency also found that rainfall conditions in about 89.97% of the country were below normal.
That does not mean rainfall has disappeared. Between July 24 and 27, BMKG recorded 128 millimeters of rain per day in North Sumatra and up to 116 millimeters per day in West Sumatra. These figures show how heavy rain can still occur locally even while the broader seasonal pattern remains dry.
According to BMKG, several atmospheric factors are behind the current situation, including active Kelvin waves, the Equatorial Rossby wave, and the Madden-Julian Oscillation in parts of Sumatra. Tropical Cyclone Noul over the Philippine Sea, north of North Maluku, is also contributing additional moisture to the atmosphere and supporting cloud growth, particularly over North Kalimantan.
The same weather pattern can increase surface wind speeds to more than 20 knots in some areas. BMKG warns that strong winds combined with heavy rain can bring down trees, cause minor building damage, and disrupt public activities.
For Friday, July 31, areas with potential moderate to heavy rain include Aceh, North Sumatra, Riau, the Riau Islands, South Sumatra, South Sulawesi, and the Highland Papua region. Areas at risk of strong winds include Bali, Banten, West Java, the Bangka Belitung Islands, Maluku, East Nusa Tenggara, South Sulawesi, and North Sulawesi.
BMKG expects some of these conditions to continue into Saturday, August 1. Moderate to heavy rain may affect Aceh, North Sumatra, West Sumatra, Riau, West Java, Central Sulawesi, and Highland Papua, while strong winds could affect Banten, West Java, Bangka Belitung, Maluku, East Nusa Tenggara, South Sulawesi, and North Sulawesi.
So even though Indonesia is in the dry season, people should not assume every day will be completely dry. Heavy rain can still develop locally, and when it comes with strong winds, the risks include flooding, standing water, falling trees, and disruptions to travel and outdoor activities.See More
BMKG Warns Of Heavy Rain And Strong Winds Across Several Parts Of Indonesia
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BMKG Warns Of Heavy Rain And Strong Winds Across Several Parts Of Indonesia (Image: Negeri Konoha)
As of Friday, July 31, 2026, several parts of Indonesia remain at risk of moderate to heavy rain and... See More
