Indonesia is entering the peak of the rainy season in December, with heavy rainfall expected across 303 seasonal zones in western regions, representing 43.4% of the total. This results from the combined effects of various climate factors including La Niña phenomenon, Madden-Julian Oscillation, Rossby waves, and Kelvin waves. Particularly during the Christmas and New Year holidays, precipitation is likely to increase further, necessitating preparations for potential disasters such as floods, flash floods, and landslides. Additionally, cold surges may generate high waves at sea, requiring shipping companies and maritime transport operators to exercise caution.
