Is It Monsoon in Bandar Seri Begawan, City-States? Rainfall and Weather by Month

Bandar Seri Begawan, City-States JANUARY
27°
Shoulder season
24° to 31°
Rain Persists
Still within the wetter part of the year, warm and humid throughout.
☔ Umbrella essential⚠️ Flash-flood aware
28°
Peak season
24° to 31°
Driest of the Best
Among the driest months of the year, part of the best window.
☀️ Sunscreen✨ Best sightseeing weather
28°
Peak season
24° to 32°
Driest Month
The driest month of the year, part of the best window.
☀️ Sunscreen✨ Best sightseeing weather
28°
Peak season
24° to 33°
Comparatively Dry
Still comparatively dry, rounding out the best window, with rain ticking back up.
🥵 Heat protection☀️ Sunscreen
29°
Shoulder season
24° to 33°
Hottest Month
The hottest month of the year on average, with rain a regular presence.
☔ Umbrella essential🥵 Heat protection
28°
Shoulder season
24° to 33°
Steady Rain
Rain remains a regular, near-daily presence.
☔ Umbrella essential🥵 Heat protection
28°
Shoulder season
24° to 33°
Steady Rain
Similar to June, consistently warm and wet.
☔ Umbrella essential🥵 Heat protection
28°
Shoulder season
24° to 33°
Steady Rain
Still consistently wet, typical of this equatorial climate.
☔ Umbrella essential🥵 Heat protection
28°
Shoulder season
24° to 32°
Rain Persists
Consistently wet, as the year moves toward the northeast monsoon.
☔ Umbrella essential🥵 Heat protection
28°
Off-peak season
24° to 32°
Monsoon Arrives
Rain increases sharply as the northeast monsoon sets in.
☔ Heavy rain gear⚠️ Flash-flood aware
28°
Off-peak season
24° to 32°
Very Wet
Among the wettest months of the year, with an added risk of landslides and flooding.
☔ Heavy rain gear⚠️ Flash-flood aware
28°
Off-peak season
24° to 32°
Wettest Month
The rainiest month of the year, with an added risk of landslides and flooding.
☔ Heavy rain gear⚠️ Flash-flood aware
Drag through the year Jan
Jan
⭐️
Feb
⭐️
Mar
⭐️
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
This month
Rainfall
320 mm
18 rainy days this month
Sunshine
6.5 hrs/day
50% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
165 mm
12 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
84%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
145 mm
13 rainy days this month
Sunshine
7.5 hrs/day
58% of daylight hours
Humidity
83%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
239 mm
16 rainy days this month
Sunshine
8 hrs/day
62% of daylight hours
Humidity
84%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
259 mm
18 rainy days this month
Sunshine
7.5 hrs/day
58% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
239 mm
17 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
239 mm
17 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
84%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
231 mm
17 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
84%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
236 mm
18 rainy days this month
Sunshine
6.5 hrs/day
50% of daylight hours
Humidity
85%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
315 mm
21 rainy days this month
Sunshine
6.5 hrs/day
50% of daylight hours
Humidity
86%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
325 mm
22 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
87%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
Rainfall
361 mm
22 rainy days this month
Sunshine
7 hrs/day
54% of daylight hours
Humidity
87%
Air feels heavy and sticky
Wind
6 km/h
Light, barely noticeable
★★★ peak season, ★★☆ decent shoulder months, ★☆☆ true off-peak, based on rain frequency, heat, and haze.
Seasons at a glance
🌟
Peak season: Feb, Mar, Apr
Bandar Seri Begawan's driest stretch. February through April is historically the calmest window for rain in Brunei's capital.
🌤️
Shoulder season: Jan, May, Jun, Jul, Aug, Sep
This tier spans January and May through September, a mix of moderate rain typical of this consistently wet, equatorial climate.
Off-peak season: Oct, Nov, Dec
The heart of the northeast monsoon. October through December sees the heaviest rain of the year, with an added risk of landslides and localized flooding.
Good to know
🕌
Brunei's capital on the coast of Borneo
Bandar Seri Begawan, formerly known as Brunei Town, sits on the northern coast of Borneo at 4 to 5 degrees north latitude.
🌧️
The northeast monsoon brings the heaviest rain
Mid-October through January is historically the wettest stretch, with rain sometimes causing landslides and floods, especially from November to January.
🌡️
Nights never get cold
Temperatures have historically never dropped below 20°C at night in recent decades, consistent with Brunei's equatorial position.
⛰️
Home to a mountainous exclave
Ulu Temburong National Park, in the Temburong exclave, protects Brunei's mountainous southeast, including Bukit Pagon, the country's highest peak at 1,800 meters.
🌀
Mostly spared from typhoons
Brunei sits at the southern edge of the typhoon-affected zone, so it is generally not affected, or only marginally, even though the typhoon season nominally runs from May to December.
Top attractions
1
Omar Ali Saifuddien Mosque
A landmark golden-domed mosque in the heart of the capital, reflected in its own lagoon and illuminated at night.
2
Kampong Ayer
A historic water village of stilt houses on the Brunei River, sometimes called the "Venice of the East."
3
Ulu Temburong National Park
A protected rainforest reserve in Brunei's mountainous Temburong exclave, known for canopy walkways and river trips.
Frequently asked questions
When is monsoon season in Bandar Seri Begawan?
Bandar Seri Begawan's wettest stretch historically runs from mid-October through January, driven by the northeast monsoon, with December historically the wettest month.
What is the best time of year to visit Bandar Seri Begawan?
February and March are historically the driest months and the best time for a visit.
What is the least favorable time to visit Bandar Seri Begawan?
October through January is historically the wettest period, best avoided, and can bring an added risk of landslides and flooding, especially from November to January.
Which month has the most rain in Bandar Seri Begawan?
December is historically the wettest month, averaging around 361mm of rain.
Which month is the driest in Bandar Seri Begawan?
March is historically the driest month, averaging around 145mm of rain.
How hot does Bandar Seri Begawan get?
May is historically the warmest month on average, with temperatures fairly stable year-round given the equatorial climate.
What should I pack for Bandar Seri Begawan?
Lightweight, tropics-friendly clothing year-round, a scarf for the breeze, a light sweatshirt for air-conditioned spaces, and a light raincoat or umbrella.
Does Brunei get typhoons?
Brunei sits at the southern edge of the typhoon-affected zone, so it is generally not affected, or only marginally, even during the nominal typhoon season from May to December.
Is the sea warm in Brunei year-round?
Yes. Sea temperatures historically range from about 27.5°C in February to 30°C in June, warm enough for swimming any time of year.
Is Ulu Temburong National Park near Bandar Seri Begawan?
It's in Temburong, a separate exclave of Brunei reached by boat and road, home to Bukit Pagon, the country's highest peak at 1,800 meters.