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Climate · Bandar Seri Begawan

Bandar Seri Begawan in September

Hot and wet, as the days hold steady.

Typical weather, averaged over 30 years

September in Bandar Seri Begawan is hot: highs near 89°F, lows near 76°F. Rain falls on about six days a week, and daylight holds at about 12 hours 8 minutes.September in Bandar Seri Begawan is hot: highs near 32°C, lows near 24°C. Rain falls on about six days a week, and daylight holds at about 12 hours 8 minutes.

High
89°F32°Caverage
Low
76°F24°Caverage
Wet days
6a week · 79% of days
Daylight
12h 08mon average

Is September a good time to visit Bandar Seri Begawan?

A good month, just outside Bandar Seri Begawan's most comfortable months, which run in two parts: July, or November to February.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 89°F in September, against 87°F to 90°F through the year.Highs near 32°C in September, against 31°C to 32°C through the year.

Chance of a wet day

79% of days in September, against 71% to 94% through the year.

Cloud cover

76% cover in September, against 75% to 79% through the year.

Daylight

12h 08m in September, against 11h 51m to 12h 24m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the most comfortable months. Hover or tap a week for its figures.

Either side

  1. August90°32°low 76°low 24°5 wet days a weekRain on about five days a week.
  2. September89°32°low 76°low 24°6 wet days a weekRain on about six days a week.
  3. October88°31°low 76°low 24°6 wet days a weekRain on about six days a week.

Where Bandar Seri Begawan sits, in September

Asia/Brunei
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:11 AMsets 6:20 PM
Above the sea
0 mlow-lying
Latitude
4.9°Nnorthern hemisphere
Nearest of ours
our one place here

The land around Bandar Seri Begawan, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Bandar Seri Begawan is our one place in Brunei so far. Clock times are local, for the 15th.

See September on the planning mapThe whole year in Bandar Seri Begawan

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Bandar Seri Begawan. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.