The Meteorology, Climatology, and Geophysics Agency (BMKG) of Denpasar has confirmed that the November forecast has already come true. Since mid-December 2024, heavy rains have been occurring in several regions of Bali and are expected to continue until the end of the month.
Air mass movements around Bali have contributed to the growth of rain clouds and strong winds reaching speeds of up to 45 km/h, blowing from the southwest to the northwest.
Tourists engaging in activities along the coast, especially in southern Bali waters, are advised to exercise caution. Wave heights between 2.5 to 4 meters (moderate category) are predicted from December 18-22, with waves in the Lombok area reaching up to 2 meters. Such conditions pose risks to shipping and fishing activities and may cause disruptions or delays in ferry services. BMKG strongly advises against engaging in sea activities during adverse weather conditions.
The agency explained that rainfall levels of 200-300 mm over ten days or 150-200 mm in a single day are classified as a warning signal. This level of rainfall has been recorded in the southern part of Badung Regency. There is a high likelihood of heavy rain in several areas of Bali (especially Tabanan, Badung, Gianyar, and Bangli) from December 18-21 and in early January 2025.
Weather conditions on the island at the end of the year are influenced by natural phenomena such as the Madden-Julian Oscillation (MJO) in its fifth phase, which promotes the formation of rain droplets in the atmosphere. Additionally, Kelvin waves are active, increasing the likelihood of rain cloud formation in and around Bali.
BMKG urges the public to remain vigilant regarding possible extreme weather events and their impacts, including thunderstorms with lightning, strong winds, flooding, landslides, and fallen trees.
Stay cautious when engaging in outdoor activities, spending time on the beach, or riding motorcycles. Keep monitoring weather updates to ensure your safety.
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