List of Indonesian Regions Entering the Dry Season in May 2026, Which Ones?

The transition of seasons in Indonesia does not occur simultaneously across all regions. So, which areas are expected to start experiencing the dry season in May 2026? See the following explanation.

Previously, BMKG predicted that the onset of the 2026 dry season would begin gradually from April and continue until June. Several seasonal zones entered the dry season earlier in April, and this trend continues into May with a broader coverage of regions.

Regions Predicted for Dry Season Onset in May

Referring to the Dry Season Prediction Book 2026 published by BMKG, in May 2026 there are 184 Seasonal Zones (ZOM) or about 26.3% of Indonesia’s territory predicted to start entering the dry season.

These regions include northern Aceh, parts of North Sumatra, parts of Riau, a small part of the Riau Islands, parts of Jambi, parts of South Sumatra, and Lampung. In addition, most of Java Island is also predicted to start experiencing the dry season during this period.

BMKG also notes other regions included in the May 2026 early dry season prediction, including central Bali, a small part of West Nusa Tenggara, southeastern Central Kalimantan, western South Kalimantan, and western South Sulawesi. Several regions in eastern Indonesia are also included, such as parts of Maluku, eastern Papua, Papua Pegunungan, and parts of South Papua.

Dry Season Prediction for 2026 in Indonesia

In general, BMKG predicts that the onset of the 2026 dry season in Indonesia will occur gradually starting from April, May, to June. In its executive summary, it is stated that most regions will enter the dry season during that period, with the largest portion occurring in May.

In terms of the season’s nature, BMKG estimates that most of Indonesia’s regions will experience conditions drier than normal. This is indicated by the dominance of below-normal rainfall categories during the dry season period.

The peak of the 2026 dry season is predicted to occur starting in August in most of Indonesia’s regions. In addition, the duration of the dry season is also expected to tend to be longer compared to the average climatological conditions in many regions.

This information is important as a reference for various sectors in preparing anticipatory measures, from water resource management to the agricultural sector. By understanding the seasonal predictions early, the public can be better prepared to face the potential impacts of this year’s dry season.