How Long Will the 2026 Dry Season Last? Check BMKG's Predictions

The Indonesian Agency for Meteorology, Climatology, and Geophysics (BMKG) has released its forecast for the dry season this year in Indonesia. Through the Dry Season Prediction Report 2026, BMKG outlines the onset of the dry season, its peak, and the estimated duration across various regions.

Onset of the 2026 Dry Season in Indonesia

According to the BMKG report, the dry season in Indonesia will begin gradually from April to June 2026. Some regions will enter the dry season as early as April, while others will follow in May and June.

BMKG explains that the dry season typically starts in southern parts of Indonesia, such as Nusa Tenggara, Bali, and parts of Java, before spreading to other areas. This aligns with Indonesia’s annual climate patterns influenced by monsoon wind movements.

The report notes that transitional periods or pancaroba will still occur in several regions before the dry season fully dominates, allowing sporadic rainfall.

Peak of the Dry Season: August-September

According to BMKG, the peak of the dry season is expected in August to September 2026 across most of Indonesia. During this period, rainfall will be low, and weather conditions will be drier.

BMKG also explains that the peak dry season is usually marked by longer dry spells and rising daytime temperatures. This situation requires anticipation from the agriculture sector, water management, and forest and land fire mitigation.

This forecast is based on analysis of atmospheric dynamics and global climate conditions affecting rainfall patterns in Indonesia throughout 2026.

How Long Will the 2026 Dry Season Last?

BMKG states that the duration of the dry season varies by region in Indonesia. Generally, the dry season can last around 3 to 6 months depending on each area’s climate characteristics.

Regions like Nusa Tenggara, eastern Java, and parts of Bali typically experience longer dry seasons. Meanwhile, Sumatra and Kalimantan tend to have shorter durations due to local rainfall influences.

The BMKG report also indicates that the end of the dry season is expected in October to November 2026, when rain begins to return, marking the gradual onset of the rainy season.

BMKG’s Advice for Facing the Dry Season

BMKG urges local governments and the public to prepare anticipatory measures for the 2026 dry season. According to the official BMKG report, the agriculture, water resources, and disaster sectors need to plan to minimise the dry season’s impacts.

Some steps that can be taken include irrigation management, water conservation, and vigilance against potential forest and land fires. BMKG also encourages regular monitoring of weather information so that the public can adjust their activities to climate conditions.