When to Visit Bandar Seri Begawan
Climate guide & best times to travel
Best Time to Visit
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Year-Round Essentials
Drier Period (Feb-Apr)
Transition Period (May-Jun)
Wet Season (Jul-Sep)
Peak Wet Season (Oct-Jan)
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Month-by-Month Guide
January
January sits right in the middle of the wet season with substantial rainfall—around 320mm (12.6 inches)—though it typically comes in short, intense bursts rather than all-day drizzle. Temperatures are consistent with the rest of the year at 33°C (91°F), and you'll find fewer crowds since many travelers avoid the wetter months. The Omar Ali Saifuddien Mosque looks particularly photogenic after rain when everything's washed clean.
February
February marks the beginning of the transition toward drier conditions, with rainfall dropping to a more manageable 163mm (6.4 inches). The heat stays steady at 33°C (92°F), but you'll notice fewer afternoon thunderstorms interrupting your plans. It's actually a pretty decent time to visit if you want to avoid the peak tourist periods while still getting reasonably cooperative weather.
March
March is one of the driest months you'll get in Bandar Seri Begawan, with only about 142mm (5.6 inches) of rain—though that's still more than many places see in their wet season. Temperatures tick up slightly to 34°C (93°F), and the lower rainfall means you can plan outdoor activities with a bit more confidence. Humidity stays constant, so you'll still want breathable clothing.
April
April sees rainfall starting to pick up again to around 241mm (9.5 inches), though it's still significantly drier than the November-January period. Temperatures reach 34°C (94°F), which combined with the 70% humidity can feel pretty intense during midday. The month tends to be popular with visitors trying to catch the tail end of the drier weather before the wetter months return.
May
May continues the trend toward wetter conditions with 259mm (10.2 inches) of rainfall, typically arriving as afternoon thunderstorms that can be quite dramatic. The temperature holds at 34°C (94°F), and you'll want to plan indoor activities or early morning excursions to avoid both the heat and the likely afternoon downpours. The rainforest looks particularly lush during this time.
June
June brings consistent rainfall at 239mm (9.4 inches) and temperatures that peak at 34°C (94°F). The wet pattern is well-established by now, so you'll want to embrace the tropical weather rather than fight it—mornings tend to be clearer, with storms building in the afternoon. Tourist numbers stay relatively low, which means you'll have attractions mostly to yourself.
July
July maintains the pattern with 241mm (9.5 inches) of rain and temperatures at 34°C (94°F). The rain tends to be predictable—you can often set your watch by the afternoon storms—which actually makes planning easier once you adjust to the rhythm. The Kampong Ayer water village is particularly atmospheric during light rain, though you'll want proper rain gear.
August
August sees temperatures at their annual peak of 35°C (95°F), though honestly the difference from other months is barely noticeable. Rainfall sits at 231mm (9.1 inches), and the combination of heat and humidity means you'll want to take things slow during the middle of the day. Air-conditioned museums and the Royal Regalia Museum become particularly appealing during afternoon hours.
September
September continues with steady conditions—34°C (94°F) and 236mm (9.3 inches) of rainfall. The weather pattern is well-established by now, with morning sunshine giving way to afternoon clouds and likely storms. It's a quiet time for tourism, which can be nice if you prefer exploring without crowds, though you'll need flexibility in your daily plans.
October
October marks the beginning of the wetter season with rainfall jumping to 312mm (12.3 inches). Temperatures drop slightly to 33°C (93°F), though 'drop' is generous—you probably won't notice the difference. The increased rainfall means you'll want to pack proper rain gear and have backup indoor plans, but the storms can be quite spectacular to watch from covered areas.
November
November sits firmly in the wet season with 323mm (12.7 inches) of rain—this is when you'll see the most persistent rainfall patterns. Temperatures stay at 33°C (92°F), and while the rain can be inconvenient for outdoor plans, it does bring cooler air and some relief from the constant heat. Tourist numbers are at their lowest, so you'll have attractions practically to yourself.
December
December is typically the wettest month with 358mm (14.1 inches) of rainfall, though it's worth noting that this doesn't mean 31 days of constant rain—just more frequent and heavier downpours. Temperatures hold at 33°C (92°F), and the festive season can make it an interesting time to visit if you don't mind working around the weather. The city looks particularly beautiful when wet, with all the gold domes gleaming.