18 Sep 2023

General Weather Situation

Brunei Darussalam is currently towards the end of Southwest Monsoon period, where southwesterly is weakening. Weak southwesterly and strong northeasterly flow of wind will cause moist atmospheric condition favorable to active weather condition for the next few days.

Brunei Darussalam Meteorological Department’s Meteorological Observation Station, at the Brunei International Airport has recorded a total rainfall amount of 329.6 since 1st September 2023. This value has reached slightly above normal amount of rainfall, by which the normal amount of rainfall for September (1991-2020) is 235.1 mm.

Brunei Darussalam Weather Forecast
Active weather conditions are expected from today (18 September 2023) until Friday (22 September 2023) with occasional heavy thundershowers affecting many areas of the country. Wind speed may reach up to 45 km/h during or near heavy thundershowers.

Over Brunei waters, sea state is generally at slight, between 0.4 and 0.8 meters.

Our Advice
Members of the public are advised to take precautionary actions with respect to the forecasted active weather condition. There is a high risk of flash floods especially at low-lying and flood prone areas as well as near the river banks during continuous heavy rain and also during high tide. Risk of landslide and fallen trees are also possible during heavy showers and gusty condition.

Public, road users and fishermen are advised to always be up to date with the latest weather forecast, advisory and warning issued by Brunei Darussalam Meteorological Department, and to take necessary actions to ensure safety.

We shall continue to monitor the weather conditions and will issue weather advisories or warnings if necessary. Latest weather information, advisories and warnings can be accessed easily through our mobile app, Brunei WX, as these weather information, advisories and warnings can be received immediately after they are issued. Latest weather information can also be obtained by contacting the duty meteorological forecaster at our Forecast Centre, through our Weather Line 114, by visiting our website at or follow our Facebook (@bruneiweather), Instagram ( and our Telegram Channel (Brunei Weather).

Wallahu a’lam Bissawab.