Authorities have issued an alert for potential extreme weather conditions across Bali during the period from January 21 to January 27, 2026. Most parts of the island have entered the peak of the rainy season, with atmospheric conditions indicating an increased likelihood of heavy rainfall, strong winds, and high sea waves in surrounding waters.
Official observations indicate that the current situation is influenced by the active Asian monsoon, combined with the formation of a wind convergence pattern over the Bali region. High levels of moist air have also been detected extending to the upper layers of the atmosphere, reaching approximately the 200 millibar level. These combined factors are contributing to heightened convective activity, which increases the potential for extreme weather events during the coming days.
Widespread Heavy Rainfall and Thunderstorms
Moderate to heavy rainfall accompanied by thunder or lightning is expected to affect a broad range of areas across Bali. Regions included in this weather outlook are Badung Regency, Denpasar City, Tabanan Regency, Bangli Regency, Gianyar Regency, Karangasem Regency, Jembrana Regency, Buleleng Regency, and Klungkung Regency.
The forecast indicates that the potential for intense rainfall is not limited to specific zones but may occur across coastal areas, lowlands, and higher elevation regions. The increased convective activity, driven by high atmospheric moisture content, supports the formation of rain clouds capable of producing significant precipitation and thunderstorms across these locations.
Strong Winds Recorded in Southern Bali
Strong winds are also a key concern during the alert period. Based on the latest observational data from the I Gusti Ngurah Rai Meteorological Station, maximum wind speeds in southern Bali have reached 38 knots, equivalent to approximately 70.3 kilometers per hour.
The potential for strong winds extends across the same regions identified for heavy rainfall, including Badung, Denpasar, Tabanan, Bangli, Gianyar, Karangasem, Jembrana, Buleleng, and Klungkung. These wind conditions are closely linked to the ongoing activity of the Asian monsoon and the presence of wind convergence patterns over the island.
High Sea Waves in Northern and Southern Waters
Marine conditions around Bali are also expected to be affected by the prevailing weather patterns. Sea wave heights are forecast to reach between 1.25 and 2.5 meters in the northern waters of Bali and the northern part of the Lombok Strait.
Higher waves, ranging from 2.5 to 4.0 meters, are expected in the southern part of the Bali Strait, the Badung Strait, the southern section of the Lombok Strait, and the southern waters of Bali. Persistent strong winds over these maritime areas are the primary factor contributing to the increased wave heights during the forecast period.
Ongoing Monitoring and Advisory
Communities and relevant institutions are advised to remain alert to sudden changes in weather conditions, as the potential for extreme weather is expected to persist over the next seven days. Continuous monitoring is being carried out based on the latest meteorological observations to assess evolving conditions.
Further updates will be issued as new data becomes available, in line with observed atmospheric developments across Bali and its surrounding waters.
