BMKG Warns of 6-Meter High Waves in Bali Waters

High waves of up to six meters are expected in the waters off southern Bali between August 5 and 8, 2026, according to the Center for Meteorology, Climatology, and Geophysics (BMKG) Region III Denpasar. Forecaster Luh Nyoman Didik Tri Utami attributed the phenomenon to an active Australian monsoon.

This monsoon triggers consistent strong winds blowing southward, with speeds forecast to reach 46 kilometers per hour. These winds transfer energy to the water's surface over the open Indian Ocean, forming higher waves as they approach shallower coastal areas. The BMKG predicts similar wave heights of 4–6 meters in the southern part of the Lombok Strait during the same period.

Other areas will experience less intense conditions. The Badung Strait and the southern Bali Strait are forecast to see waves of 2–4 meters. Meanwhile, the northern Lombok Strait is expected to have waves between 1.25–2.5 meters. These conditions pose risks to maritime safety.

The BMKG has issued specific advisories for various maritime operators. Ferry operators are urged to remain vigilant for wind speeds of 21 knots and wave heights of 2.5 meters. Barge operators should exercise caution with winds at 16 knots and waves at 1.5 meters. Fishers are advised to be alert to winds exceeding 15 knots and waves reaching 1.25 meters. The public is encouraged to monitor the latest weather updates from BMKG.

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Caused by an active Australian monsoon