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December in Bandar Seri Begawan sees daytime temperatures around 31°C (88°F) and lows of 24°C (75°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Our weather planner can help you find worldwide destinations with pleasant weather during this period. February and March typically offer the best weather for Bandar Seri Begawan.
Pick a month to see the average temperature, rainfall and sunshine in Bandar Seri Begawan - and find the best time to visit.
49-year average (1977-2025)
Based on our historical records, temperatures in Bandar Seri Begawan typically stay consistent throughout December, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 24°C (75°F).
49-year average (1977-2025)
Average daily rainfall for each day of the month based on long-term records.
Browse day-by-day weather records for Bandar Seri Begawan spanning 50 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Based on weather observations in Bandar Seri Begawan between 1981 and 2025, these are the recorded extremes during December.
Find out more about the weather in Brunei Darussalam and which places have the best travel conditions in this month. See all of Brunei Darussalam in December →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm weather calls for comfortable, breathable clothing in December. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Temperature Rainfall Sunshine Wind Speed
See the full Bandar Seri Begawan climate overview or explore weather in Brunei Darussalam.
Where to go in December - average daytime high across popular destinations.
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