Tomorrow's Weather Forecast for Kepri Region, BMKG: High Waves in Anambas and Natuna Waters The Hang Nadim's Meteorology, Climatology and Geophysics Agency (BMKG) class I Batam released a weather forecast for the Riau Islands region. Sabtu, 6 Maret 2021 14:41 TRIBUNBATAM.id, BATAM - The Hang Nadim's Meteorology, Climatology and Geophysics Agency (BMKG) class I Batam released a weather forecast for the Riau Islands region. BMKG estimates that Riau Islands weather is cloudy and there's the potential for light rain to occur in the morning until noon on Sunday (7/3/2021). BMKG also issued early warnings of high sea waves in several areas of the Riau Islands.