September weather forecast and climate
Bandar Seri Begawan, Brunei

A scenic reflective view of the majestic grandeur of the Sultan Omar Ali Saifuddin Mosque, in Bandar Seri Begawan, Brunei
A scenic reflective view of the majestic grandeur of the Sultan Omar Ali Saifuddin Mosque, in Bandar Seri Begawan, Brunei

What is the temperature in September in Bandar Seri Begawan?

In September, in Bandar Seri Begawan, Brunei, the average high-temperature is 32°C (89.6°F), and the average low-temperature is 23.1°C (73.6°F).

How much does it rain in Bandar Seri Begawan in September?

In Bandar Seri Begawan, in September, it is raining for 19 days, with typically 264.4mm (10.4") of accumulated precipitation.

How warm is the water in September in Bandar Seri Begawan?

In Bandar Seri Begawan, in September, the average water temperature is 29.5°C (85.1°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.
Average temperature in September - Bandar Seri Begawan, Brunei
  • Average high temperature in September: 32°C

The warmest month (with the highest average high temperature) is May (32.6°C).
The month with the lowest average high temperature is January (30.4°C).

  • Average low temperature in September: 23.1°C

Months with the highest average low temperature are April and May (23.7°C).
The coldest month (with the lowest average low temperature) is July (23°C).

Average rainfall in September - Bandar Seri Begawan, Brunei
  • Average rainfall in September: 264.4mm

The wettest month (with the highest rainfall) is November (339.9mm).
The driest month (with the lowest rainfall) is March (118.7mm).

Average rainfall days in September - Bandar Seri Begawan, Brunei
  • Average rainfall days in September: 19 days

The month with the highest number of rainy days is November (23 days).
The month with the lowest number of rainy days is March (11 days).

Average sea temperature in September - Bandar Seri Begawan, Brunei
  • Average sea temperature in September: 29.5°C

Best months for swimming (with the highest average sea temperature) are June and July (30.3°C).
The coldest month (with the lowest average sea temperature) is February (26.9°C).

Average daylight in September / Average sunshine in September - Bandar Seri Begawan, Brunei
  • Average daylight in September: 12.1h

Months with the longest days are June and July (Average daylight: 12.4h).
The month with shortest days is December (Average daylight: 11.8h).

  • Average sunshine in September: 6.6h

The month with most sunshine is April (Average sunshine: 8h).
The month with least sunshine is January (Average sunshine: 6.3h).

Average UV index in September - Bandar Seri Begawan, Brunei
  • Average UV index in September: 12

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October and November (UV index 12).
The month with the lowest UV index is December (UV index 11).

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