BMKG Warns of 4-Meter High Waves in the Indian Ocean and North Natuna Sea

3 hours ago 2

November 17, 2025 | 02:25 pm

TEMPO.CO, Jakarta - The Meteorology, Climatology, and Geophysics Agency (BMKG) has issued an early warning of potentially high waves in several areas of Indonesian waters on November 17-20, 2025.

According to BMKG forecaster Marina Ayu, wind patterns in northern Indonesia generally move from northwest to northeast, with speeds ranging from 6 to 25 knots. In southern Indonesia, winds typically move from southeast to southwest, with speeds ranging from 6 to 25 knots.

"The highest wind speeds were observed in the western Indian Ocean from Nias to the Mentawai Islands, the Karimata Strait, and the northern Pacific Ocean off Papua," Marina said in a written statement on Monday, November 17, 2025.

She said that these conditions have caused waves to reach heights of 1.25 to 2.5 meters in the northern part of the Malacca Strait and in the southern Indian Ocean off the coasts of Banten, West Java, Central Java, Yogyakarta, East Java, Bali, West Nusa Tenggara, and East Nusa Tenggara. They have also caused waves to reach these heights in the northern and southern parts of the Karimata Strait.

Similar waves are likely to occur in the western, central, and eastern parts of the Java Sea; the southern, central, and northern parts of the Makassar Strait; the Maluku Sea; and the northern Pacific Ocean off the coasts of Maluku, Southwest Papua, West Papua, and Papua; the western, central, and eastern parts of the Arafura Sea.

Meanwhile, very high waves of 2.5 to 4.0 meters are likely to occur in the western Indian Ocean off the coasts of Aceh, Nias Islands, Mentawai Islands, Bengkulu, Lampung, and the northern Natuna Sea. "Potential high waves in several areas could pose risks to maritime safety," she said.

Marina urged the public to be cautious, especially fishermen using fishing boats. They should avoid wind speeds exceeding 15 knots and wave heights above 1.25 meters. Barges should be wary of wind speeds exceeding 16 knots and wave heights above 1.5 meters.

For ferry boats, they are advised to avoid wind speeds exceeding 21 knots and wave heights above 2.5 meters, while larger vessels such as cargo ships and cruise ships are asked to be cautious of wind speeds exceeding 27 knots and wave heights above 4.0 meters.

"We urge people living and working near areas prone to high waves always to remain vigilant," Marina said.

Editor's Choice: BMKG Warns of a Twofold Rise in West Java Rainfall Risk During the Second Ten Days

Click here to get the latest news updates from Tempo on Google News

BMKG Warns of a Twofold Rise in West Java Rainfall Risk During the Second Ten Days

7 jam lalu

BMKG Warns of a Twofold Rise in West Java Rainfall Risk During the Second Ten Days

The BMKG says that the potential for high rainfall in West Java, Indonesia, has doubled in the second ten days.

BMKG Forecasts Rain in Jakarta and Surrounding Areas from Afternoon Until Evening

8 jam lalu

BMKG Forecasts Rain in Jakarta and Surrounding Areas from Afternoon Until Evening

BMKG predicts the potential for light rain in parts of North Jakarta, West Jakarta, and South Jakarta starting at 13:00 WIB (Western Indonesian Time).

BMKG Predicts Rain in Parts of Greater Jakarta This Morning, with Widespread Rain in the Afternoon

1 hari lalu

BMKG Predicts Rain in Parts of Greater Jakarta This Morning, with Widespread Rain in the Afternoon

The Meteorology, Climatology, and Geophysics Agency (BMKG) advises the public to be wary of drastic weather changes, from sunny to heavy rain.

West and East Java Put on Alert as BMKG Warns of Heavy Rain This Week

3 hari lalu

West and East Java Put on Alert as BMKG Warns of Heavy Rain This Week

According to BMKG, the potential for the growth of rain clouds in various regions in Indonesia remains significant for the next week, November 14-20, 2025.

BMKG: Greater Jakarta Braces for Widespread Rainfall, Strong Winds Possible

3 hari lalu