September weather forecast
Brunei

September stands as a climatic culmination in Brunei, with the southwest monsoon exerting its full force. The consistent rainfall of August evolves further, making this month one of the wettest in the nation's calendar. The elements come together to craft a symphony of rain, wind, and persistent warmth, painting a vivid portrait of Brunei's tropical rainforest climate.

The temperatures during September remain in the familiar range of 24°C (75.2°F) to 36°C (96.8°F). However, the continual rainfall often tempers the peak temperatures, providing brief respites from the persistent heat. It's not uncommon for days to start warm and sunny, only to be overtaken by afternoon showers that provide a cooling effect.

Compared to August, September experiences a slight elevation in the frequency and intensity of its rainfall. The showers are heavier and more sustained, symbolizing the zenith of the wet season. These rains nourish the land, with the Borneo rainforests displaying their most vibrant shades of green during this period.

Banda Seri Begawan remains the focal point of Brunei's climatic tapestry. While its urban structures continue to amplify the warmth, the consistent rainfall of September ensure that the city doesn't stray far from the national average. However, the juxtaposition of rain and urban heat can occasionally lead to high humidity levels, making certain days feel particularly sticky and oppressive.

The winds in September, predominantly influenced by the southwest monsoon, maintain their course with speeds ranging from 10km/h (6.2mph) to 12km/h (7.5mph). These winds not only bring moisture from the sea but also play a pivotal role in distributing the rain across the nation. As September wanes, there's an underlying anticipation of the forthcoming transitional phase, where Brunei will gradually pivot towards the northeast monsoon and the patterns associated with it.

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• Bandar Seri Begawan - September »
  The months with the lowest humidity are August and September, with an average relative humidity of 75%. The months with the lowest humidity in Bandar Seri Begawan are August and September, with an average relative humidity of 75%.
• Kuala Belait - September »
  Striding into the last quarter, September in Kuala Belait denotes a turn in weather with a significant decrease in rainfall to 79mm (3.11"), the lowest so far in the year. On the first day of September in Kuala Belait sunrise is at 06:17 and sunset at 18:29.
• Seria - September »
  The month with the least rainfall in Seria is September, when the rain falls for 22.5 days and typically collects 79mm (3.11") of precipitation. The month with the least rainfall in Seria is September, when the rain falls for 22.5 days and typically collects 79mm (3.11") of precipitation.
• Kampong Keriam - September »
  September's weather in Kampong Keriam records a drop in average rainfall to 113mm (4.45") dispersed across 25.9 days, marking the end of the rainy season. In Kampong Keriam during September, the rain falls for 25.9 days and regularly aggregates up to 113mm (4.45") of precipitation.
• Kampong Kiarong - September »
  The months with the lowest humidity in Kampong Kiarong are August and September, with an average relative humidity of 75%. The months with the lowest humidity in Kampong Kiarong are August and September, with an average relative humidity of 75%.
• Kampong Beribi - September »
  In Kampong Beribi during September, the rain falls for 25.9 days and regularly aggregates up to 113mm (4.45") of precipitation. In Kampong Beribi, in September, it is raining for 25.9 days, with typically 113mm (4.45") of accumulated precipitation.
• Jerudong - September »
  The months with the lowest humidity in Jerudong are August and September, with an average relative humidity of 75%. August and September, with an average relative humidity of 75%, are the least humid months in Jerudong.
• Panaga - September »
  In Panaga, during September, the rain falls for 22.5 days and regularly aggregates up to 79mm (3.11") of precipitation. On the last day of September, in Panaga, sunrise is at 06:10 and sunset at 18:15 +08.
• Batu Apoi - September »
  August and September, with an average relative humidity of 77%, are the least humid months in Batu Apoi. In Batu Apoi, Brunei, during September, the rain falls for 25.1 days and regularly aggregates up to 103mm (4.06") of precipitation.
• Melilas - September »
  The months with the lowest humidity in Melilas are August and September, with an average relative humidity of 78%. The months with the lowest humidity in Melilas are August and September, with an average relative humidity of 78%.
• Sukang - September »
  In Sukang in September, during 24.1 rainfall days, 100mm (3.94") of precipitation is typically accumulated. August and September, with an average relative humidity of 78%, are the least humid months in Sukang.