List of Indonesian Regions Entering the Dry Season in April 2026
Several regions in Indonesia are beginning to enter the dry season in April 2026. The Meteorology, Climatology, and Geophysics Agency (BMKG) notes that the seasonal transition is occurring gradually across various areas, starting from certain regions before spreading to others.
Information on regions entering the dry season is crucial for the public to anticipate dry weather, particularly in the agricultural sector, water resources, and daily activities. So, which regions are already experiencing the dry season, and what is the forecast for the 2026 dry season in Indonesia?
Regions Already Entering the Dry Season
BMKG states that parts of Indonesia have entered the dry season in April 2026. Based on the number of Seasonal Zones (ZOM), approximately 7% of Indonesia’s regions, or 49 ZOM, have been recorded as experiencing the dry season.
“Based on the number of ZOM, 7% of Indonesia’s regions (49 ZOM) are experiencing the Dry Season,” BMKG wrote, according to the data update on 31 March 2026.
The regions currently experiencing the dry season include:
small parts of Aceh
small parts of North Sumatra
small parts of Riau
parts of Central Sulawesi
parts of South Sulawesi
parts of Southeast Sulawesi
small parts of West Nusa Tenggara (NTB)
small parts of East Nusa Tenggara (NTT)
parts of Maluku
small parts of West Papua
This data indicates that the dry season is beginning in several regions on a limited basis and is not yet widespread across Indonesia. BMKG emphasises that the onset of the dry season occurs gradually in line with atmospheric dynamics and monsoon movements.
Regions Predicted to Enter Dry Season in April
BMKG previously predicted that regions entering the early dry season in April 2026 would reach 114 ZOM, or about 16.3% of the total seasonal zones in Indonesia. This period marks the initial transition from the rainy season to the dry season, occurring gradually.
According to BMKG’s official website, the early dry season will begin in the Nusa Tenggara region and then expand to other parts of Indonesia. After April, 184 ZOM are predicted to enter the dry season in May and 163 ZOM in June 2026.
BMKG explains that the seasonal transition is influenced by changes in monsoon winds, from the Asian Monsoon to the Australian Monsoon, which is the primary indicator of the dry season’s onset in Indonesia.
Forecast for the 2026 Dry Season in Indonesia
BMKG predicts that the 2026 dry season will arrive earlier in parts of Indonesia. As many as 325 ZOM, or about 46.5% of the regions, are estimated to experience an earlier onset of the dry season than normal conditions.
Additionally, rainfall accumulation during the dry season is predicted to be in the below-normal category in most of Indonesia, namely around 64.5% of ZOM. This condition indicates the potential for a drier dry season than usual.
BMKG also estimates that the peak of the 2026 dry season in Indonesia will occur in August across about 61.4% of the regions. Moreover, more than half of the regions are predicted to experience a longer dry season duration than normal, so the public is urged to increase vigilance against the potential for drought and forest or land fires.
The 2026 dry season is expected to progress gradually from April to mid-year, with drier characteristics in several regions. BMKG advises the public to continue monitoring the latest weather and climate information through official channels to anticipate the impacts of the dry season from the outset.