Bandar Seri Begawan weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Fair
Best time to visit: July, September – March
What is the weather like in Bandar Seri Begawan in December?
In December, Bandar Seri Begawan is hot: daytime highs average 29 °C, and even at night it stays warm at around 24 °C. The sea averages 29.4 °C – almost as warm as a bath. Expect around 5 hours of sunshine a day. It is the rainy season: rain falls on about 26 days, totalling 236 mm. The air is often humid and muggy. All in all, December is a so-so month for a holiday in Bandar Seri Begawan.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 43 | 43 | 45 |
| Day | 29° | 29° | 29° |
| Night | 24° | 24° | 24° |
| Sea | 30° | 29° | 29° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 27 | 26 | 24 |
More details for December
- Daylight
- 11 h 50 min06:20 – 18:11
- UV index
- 10 · very highclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 10 km/haverage daily peakAll months
- Cloud cover
- 88 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Time zone
- UTC+8Asia/Brunei
How the score comes together
- Temperatureweight 50 %75 %
- Sunshineweight 20 %28 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Bandar Seri Begawan in December: quick answers
Is Bandar Seri Begawan hot in December?
Yes. In December, Bandar Seri Begawan is hot: daytime highs average 29 °C and nights stay around 24 °C. On about 4 days the thermometer climbs to 30 °C or more.
Can you swim in Bandar Seri Begawan in December?
Yes. In December the sea averages 29.4 °C – almost as warm as a bath.
Does it rain much in Bandar Seri Begawan in December?
It rains often – on about 26 days, adding up to 236 mm.
Bandar Seri Begawan month by month
The whole year in Bandar Seri BegawanAll destinations: BruneiWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences