Brunei is located near the equator and has a tropical rainforest climate characterized by high temperatures, high humidity, and abundant rainfall throughout the year. Although there are small temperature variations across seasons, the influence of the monsoon results in wet and relatively dry periods, which are related to cultural events.
Spring (March to May)
Climate Characteristics
- Temperature: Stable at about 23 to 32°C
- Precipitation: Rainfall slightly decreases from April to May, with increased sunny intervals
- Characteristics: High humidity with frequent short showers
Major Events and Culture
| Month |
Event |
Relation to Weather |
| March |
Brunei Marathon |
Held during relatively cooler times in the morning and evening. High humidity and short rain influence the runners. |
| April |
Dragon Boat Regatta |
Traditional competition held on rivers. Boat racing continues even in light rain. |
| April-May |
Start of Ramadan |
Fasting occurs during the high heat and humidity of the day. Outdoor dining and markets are lively at night. |
Summer (June to August)
Climate Characteristics
- Temperature: Highest humidity with temperatures around 24 to 32°C
- Precipitation: Heavy showers are frequent from June to August, with a high total rainfall
- Characteristics: Thunderstorms and severe downpours occur regularly
Major Events and Culture
| Month |
Event |
Relation to Weather |
| June |
Hari Raya Aidiladha |
Islamic festival. Prayers and meals are held in mosques during breaks in the rain. |
| July |
Sultan's Birthday |
A royal celebration. Outdoor parades require rain gear, and short rain showers are expected. |
| August |
Summer School Vacation |
Families tend to visit shopping malls or cool retreats (like Kuala Temburong). |
Autumn (September to November)
Climate Characteristics
- Temperature: Gradually decreasing rainfall with temperatures around 23 to 31°C
- Precipitation: A brief period of stability in October, with relatively stable weather
- Characteristics: High humidity transitions from the long rainy season, making it more comfortable
Major Events and Culture
| Month |
Event |
Relation to Weather |
| October |
Ulu Ulu National Park Festival |
Held in a protected forest area. Outdoor activities are planned for dry days. |
| November |
Mawlid al-Nabi (Prophet's Birthday) |
An Islamic event. Night processions and city lighting shine during the cool nights of the dry season. |
Winter (December to February)
Climate Characteristics
- Temperature: Almost constant year-round at about 23 to 31°C
- Precipitation: Increased rainfall again due to monsoon influences in December and January
- Characteristics: Heavy rains may occur, with humidity peaking during the year
Major Events and Culture
| Month |
Event |
Relation to Weather |
| January |
Chinese New Year (Spring Festival) |
Celebrated mainly within the Chinese community. Gatherings indoors are common, having little impact from rain. |
| February |
National Day |
February 23. Parades and fireworks may require rain gear and waterproof measures. |
Summary of Seasonal Events and Climate Relations
| Season |
Climate Characteristics |
Example Major Events |
| Spring |
Short showers, high humidity |
Brunei Marathon, Dragon Boat Regatta, Start of Ramadan |
| Summer |
Heavy downpours, rainy |
Hari Raya, Sultan's Birthday, Summer School Vacation |
| Autumn |
Reduced rainfall, comfortable |
Ulu Ulu Park Festival, Prophet's Birthday |
| Winter |
Return of heavy rains, peak humidity |
Chinese New Year, National Day |
Additional Notes
- Many cultural events in Brunei are based on the Islamic calendar and vary in date each year.
- A notable feature is the prevalence of indoor facilities and events in mosques, accommodating the high temperature and humidity.
- Given the potential for sudden heavy rain, waterproof measures are essential for outdoor events.
The climate and seasonal events in Brunei are closely interconnected, fostering a unique culture that harmonizes tradition and the natural environment.
Patchy rain possible