Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 29.1 °C | 28.5 °C | 27 days | Unfavourable season |
| February | 29.2 °C | 27.7 °C | 21 days | Unfavourable season |
| March | 30 °C | 28 °C | 25 days | Unfavourable season |
| April | 30.6 °C | 29.4 °C | 26 days | Unfavourable season |
| May | 30.7 °C | 30.4 °C | 26 days | Unfavourable season |
| June | 30.2 °C | 30.3 °C | 23 days | Unfavourable season |
| July | 30.3 °C | 30 °C | 21 days | Unfavourable season |
| August | 30.4 °C | 30.1 °C | 23 days | Unfavourable season |
| September | 30.2 °C | 29.9 °C | 23 days | Unfavourable season |
| October | 29.8 °C | 29.7 °C | 27 days | Unfavourable season |
| November | 29.8 °C | 29.9 °C | 28 days | Unfavourable season |
| December | 29.4 °C | 29.4 °C | 28 days | Unfavourable season |
Nearby in October
Before you go
Three things to check once you have picked your dates.
Entry
No visa needed for stays of up to 90 days. Passport valid for at least 6 months. Submit the e-arrival declaration form before you travel (may be requested at check-in); get your passport stamped on entry.
For a British passport, per the UK Foreign Office on 19 March 2026. Rules change: check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 19 March 2026
Health
Vaccines · hepatitis B if you are not already vaccinated; hepatitis A and Japanese encephalitis depending on activities and areas visited. Routine vaccines up to date (measles in particular).
Yellow fever · No yellow fever locally, vaccine not recommended. Certificate required only if you arrive from a country with yellow fever risk.
Malaria · None.
Mosquitoes · dengue reported: protect yourself from bites.
Per the CDC (page reviewed 25 August 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in Bandar Seri Begawan in October?
The sea averages 29.7°C in October — yes, pleasant swimming.
How hot is Bandar Seri Begawan in October?
Expect 29.8°C in the afternoon and 24°C at night, averaged over the last 10 years.
Does it rain a lot in Bandar Seri Begawan in October?
Around 27 days with rain (≥ 1 mm) in the month — 86% of days.