Climate Insights for Bintulu

The climate in Bintulu is warm and mild. The average annual temperature is 25°C and approximately 222mm of precipitation falls per year. November is the wettest month, receiving around 33mm of rainfall. Bintulu sits near the equator, so seasonal temperature differences are minimal throughout the year.

Bintulu sees moderate temperature variation throughout the year, ranging from 20°C to 32°C. The warmest month is September, when average highs reach 32°C and the mean temperature sits around 26°C. October is the coolest month, with minimum temperatures around 20°C and an average of 23°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between September and October, with a 3°C shift in average temperatures.

Bintulu is a quite dry location, receiving approximately 222mm of precipitation annually, which averages out to around 18mm per month. The wettest month is August, averaging 33mm of rainfall. October and November also tend to see above-average precipitation. The driest month is April, with just 5mm. That's 28mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Bintulu is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 7km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Bintulu, which began on June 21, 2026. Bintulu sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in September at around 32°C, while the coldest stretch bottoms out in October near 20°C. Autumn is next, beginning on September 23, 2026 — 16 days from now.

The best time to visit Bintulu is during April, May, June, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 17mm per month. By contrast, September can be uncomfortably hot with temperatures reaching 32°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Bintulu based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.