Bandar Seri Begawan weather in December

December in Bandar Seri Begawan: sweltering, soaked, with clean air — a gamble, with 27 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Bandar Seri Begawan🇧🇳 Brunei · Malaysia, Singapore & Sumatra · City51
  1. 56Jan
  2. 64Feb
  3. 58Mar
  4. 58Apr
  5. 54May
  6. 57Jun
  7. 59Jul
  8. 57Aug
  9. 56Sep
  10. 51Oct
  11. 52Nov
  12. 51Dec

#12 of 12 months in Bandar Seri Begawan · #1140 of 1413 destinations to visit in December · comfort 51/100 (tier D)

Days
32°C
Nights
24°C
Wet days
27
Sun
8.5 h
Humidity
88%
Daylight
12 h
Bandar Seri Begawan, Brunei
Photo: vitalina · Pexels

Traveller notes on Bandar Seri Begawan in December

Other months in Bandar Seri Begawan

Detailed August-specific weather trip reports for Bandar Seri Begawan are limited on the forum, with the destination's Tripadvisor weather overview describing conditions typical of Brunei's equatorial location: hot and humid enough that visitors should expect to sweat outdoors regardless of season. Unlike the Philippines to the northeast, Brunei sits close enough to the equator that it falls outside the main Pacific typhoon belt, so the destination's genuine year-round rain risk isn't typhoon-driven the way it is further north. Given the limited destination-specific detail for August exactly, this note leans on Brunei's broader equatorial pattern: expect hot, very humid conditions with a real, fairly consistent chance of rain regardless of month, rather than a sharply defined wet-versus-dry season. Posters generally rate August as hot, humid and genuinely rain-prone for Bandar Seri Begawan, in line with its equatorial setting rather than any dramatic seasonal swing.
Tripadvisor community · August · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe Bandar Seri Begawan's climate in blunt terms - hot and humid enough that visitors should expect to sweat, with conditions described elsewhere by posters as hot and humid interspersed by short showers. Posters specifically raised the question of whether February brings sustained heavy rain or just occasional passing showers, reflecting real uncertainty among visitors about how wet this month actually runs; the region's showers here tend to be frequent rather than rare, so travelers should plan for rain most days rather than treating February as a clearly dry month. Posters consistently recommend light, breathable clothing and an umbrella on hand regardless of how sunny the morning looks, given how quickly a shower can roll in.
Tripadvisor community · February · 1 month ago · Read more on Tripadvisor ↗

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Bandar Seri Begawan climate normals — December

Daytime high32°C / 89°F🔥 sweltering
Nighttime low24°C / 75°F
Feels like (high)38°C / 100°F
Sea temperature31°C / 87°F♨️ bath-warm
Rainfall273 mm / 10.8 in⛈ soaked
Rainy days27 days
Humidity88%💦 very humid
Dew point25°C / 77°F
Sunshine8.5 h/day
Daylight11.8 h
Wind9 km/h / 6 mph
Air quality (US AQI)48🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Bandar Seri Begawan in December

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

Quietschool holidays in 5 of the markets that fill it, one of its worst months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Best months for Bandar Seri Begawan's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherBandar Seri Begawan's weather doesn't swing hard through the year — comfort stays fairly steady in every month.

JFMAMJJASOND

What's on in Bandar Seri Begawan in December

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Brunei December Festival

    22 Dec – 1 Jan · usuallyMajor festival

    The tourism board runs ten days of markets, river events and food stalls around the capital from 22 December to New Year's Day. For a country with no bars and no nightlife to speak of, it is the busiest the city gets. Source ↗

  • Season

    Wet season

    MonsoonRisk

    27 rainy days and about 273 mm in the month — the real kind of rainy season, not afternoon showers.

    from the climate normals

What's on around the world in December →

Where is Bandar Seri Begawan?

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Bandar Seri Begawan in December — FAQ

Is December a good time to visit Bandar Seri Begawan?
December in Bandar Seri Begawan: sweltering, soaked, with clean air — a gamble, with 27 rainy days. It ranks #12 of 12 months for Bandar Seri Begawan on SeasonMap's comfort score (51/100).
What is the weather like in Bandar Seri Begawan in December?
In December, Bandar Seri Begawan averages a daily high of 31.9°C and a low of 24.1°C, with about 273.2 mm of rain over roughly 27.2 rainy days.
What is the air quality in Bandar Seri Begawan in December?
Bandar Seri Begawan has a mean US Air Quality Index of about 48 in December.