Swimming in Brunei in september 2025 Sea temperature by city in september
Do you want to go to the beach in Brunei in september 2025? Is it the right month to go for pleasant temperatures and staying in the water for a long time? The answer is on this page with the sea temperatures in september in Brunei by city and our opinion on the chances of enjoying pleasant sea conditions.
Sea temperature in Brunei in september 2025
Here, find the average sea temperature in Brunei in september in several coastal cities.
86°F
min: 83°F / max: 88°F
86°F
min: 84°F / max: 88°F
Pekan Tutong
85°F
min: 83°F / max: 88°F
Seria
86°F
min: 84°F / max: 88°F
Where should you go swimming in Brunei in the month of september?
Swimming in Brunei in september is ideal
In september in Brunei swimming conditions are generally the same everywhere.
In september in Bandar Seri Begawan, Kuala Belait, Pekan Tutong and Seria, swimming conditions are perfect! With water reaching a maximum of 88°F and an average of 86°F, going in the water (and staying there!) feels great.
Where to go swimming in Brunei in september: the map of sea temperatures
ideal swimming 
pleasant swimming 
cool swimming 
cold swimming 
freezing swimmingWater temperature and seasonal norms in september
Bandar Seri Begawan
| September | |||
| Average sea temperature | 86°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 88°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 11.3in | ||
| Number of days of precipitation | 16 jour(s) (55%) | ||
| Cloud cover | 38% | ||
| Our opinion | ideal swimming |
More information on swimming in Bandar Seri Begawan in september
Kuala Belait
| September | |||
| Average sea temperature | 86°F | ||
| Minimum sea temperature | 84°F | ||
| Maximum sea temperature | 88°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 90°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 8.7in | ||
| Number of days of precipitation | 13 jour(s) (45%) | ||
| Cloud cover | 38% | ||
| Our opinion | ideal swimming |
More information on swimming in Kuala Belait in september
Pekan Tutong
| September | |||
| Average sea temperature | 85°F | ||
| Minimum sea temperature | 83°F | ||
| Maximum sea temperature | 88°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 88°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 11.3in | ||
| Number of days of precipitation | 16 jour(s) (55%) | ||
| Cloud cover | 38% | ||
| Our opinion | ideal swimming |
Seria
| September | |||
| Average sea temperature | 86°F | ||
| Minimum sea temperature | 84°F | ||
| Maximum sea temperature | 88°F | ||
| Average outside temperature | 85°F | ||
| Maximum outside temperature | 90°F | ||
| Minimum outside temperature | 81°F | ||
| Precipitation | 8.7in | ||
| Number of days of precipitation | 13 jour(s) (45%) | ||
| Cloud cover | 38% | ||
| Our opinion | ideal swimming |
List of coastal cities in Brunei
| Bandar Seri Begawan in september | ideal swimming |
| Kuala Belait in september | ideal swimming |
| Pekan Tutong in september | ideal swimming |
| Seria in september | ideal swimming |