Bali expects delayed rains as flood and landslide risks persist

Bali — Bali’s 2026/2027 rainy season is expected to begin later than usual, while the risk of heavy rain, flooding, landslides and falling trees remains, according to Bali Post and Indonesia’s Meteorology, Climatology, and Geophysics Agency, known as BMKG, in reports published around Oct. 1, 2026.

The change comes as BMKG’s forecast for Sept. 25-Oct. 1 describes dry conditions as still dominant across much of Indonesia, including Bali. The agency said rainfall in much of the country was expected to remain in the low-to-moderate category, at 0–150 mm per ten-day period, while some areas could still receive heavy rain.

Why Bali’s delayed rains still matter

For foreign residents and visitors, a delayed rainy season does not mean that roads, slopes and urban drainage systems are free from weather-related disruption. Short periods of intense rain can still produce flooding, landslides and falling trees even during a generally dry pattern. BMKG’s forecast specifically identifies Bali among the areas where low rainfall is expected to dominate, but also notes that atmospheric conditions may support heavy rain in some regions.

Bali Post reported that the island’s rainy season for 2026/2027 is forecast to arrive later than normal. The report attributed the warning about continuing hydrometeorological risk to BMKG and said residents should remain alert to heavy rain that could trigger flooding, landslides and fallen trees.

BMKG’s weekly outlook said weather from Sept. 25-27 was generally expected to range from partly cloudy conditions to light rain. From Sept. 28-Oct. 1, similar conditions were forecast across Indonesia, while the agency continued to identify the potential for heavy rain in some areas.

Sources

• Bali Post — established regional news organisation
• BMKG — Indonesia’s Meteorology, Climatology, and Geophysics Agency
• rri.co.id
• bali.idntimes.com
• bali.tribunnews.com