Lunar New Year on February 17, BMKG Predicts Rainy Weather in Several Regions

Jakarta - The Meteorology, Climatology, and Geophysics Agency (BMKG) has predicted the potential for extreme weather in parts of Indonesia from February 15-21, 2026. The potential increase in rainfall is triggered by the strengthening of the Asian Monsoon.

BMKG Acting Deputy for Meteorology Andri Ramdhani explained based on the latest analysis that the Asian Monsoon has intensified. This monsoon is bringing quite dominant westerly wind flows, accelerating the growth of convective clouds in western and southern Indonesia. This condition is reinforced by Madden-Julian Oscillation (MJO) activity in its Indian Ocean phase, as well as atmospheric Kelvin and Rossby waves that trigger wind convergence, particularly along the southern coast of Java to Nusa Tenggara.

“The combination of these factors increases the potential for moderate, heavy, to very heavy rainfall that may be accompanied by lightning and strong winds in several regions throughout the period of February 15-21, 2026,” Andri said, as quoted from the BMKG website on Sunday (2/15/2026).

Andri explained that during the period of February 15-16, extreme weather has the potential to occur in several regions of Indonesia, including Jakarta.

“On February 15-16, extreme weather has the potential to occur in Aceh, North Sumatra, West Sumatra, Bengkulu, Lampung, Banten, West Java, DKI Jakarta, Central Java, DIY, East Java, Bali, NTB, North Sulawesi, Highland Papua, and Papua,” he said.

This potential still looms during the Lunar New Year celebration on February 17. Entering February 17-18, the potential still threatens Aceh, West Sumatra, Bangka Belitung Islands, Lampung, Banten, DKI Jakarta, West Java, Central Java, DIY, East Java, Bali, NTB, East Kalimantan, and North Sulawesi.

Meanwhile, he warned that on February 19, the regions that need to be on alert are the Bangka Belitung Islands, West Sumatra, East Java, West Kalimantan, Central Kalimantan, and Highland Papua.

Then on February 20-21, the potential continues primarily in West Sumatra, East Java, Bali, NTB, and NTT.

BMKG Acting Director of Public Meteorology Ida Pramuwardani emphasized the importance of heightened vigilance to anticipate potential hydrometeorological disaster impacts in several regions.

“Regional governments along with relevant agencies are expected to continue strengthening preparedness and mitigation measures according to the risk levels and vulnerability characteristics of their respective areas,” Ida added.

BMKG reminded the public, particularly those in disaster-prone areas, to increase vigilance while remaining calm and avoiding activities in high-risk locations such as river basins, landslide-prone slopes, and areas susceptible to flooding and inundation.