Bintulu climate
Bintulu (Malaysia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 26 °C79 °F, and about 3,819 mm150 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Bintulu climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2883 | 2374 | 2678 | 49119 |
| Feb | 2883 | 2374 | 2678 | 29512 |
| Mar | 2984 | 2474 | 2679 | 26210 |
| Apr | 2984 | 2475 | 2780 | 27911 |
| May | 2984 | 2576 | 2780 | 2389.4 |
| Jun | 2984 | 2476 | 2780 | 2419.5 |
| Jul | 2984 | 2475 | 2679 | 2399.4 |
| Aug | 2984 | 2475 | 2780 | 27311 |
| Sep | 2984 | 2475 | 2680 | 29211 |
| Oct | 2984 | 2475 | 2679 | 34013 |
| Nov | 2883 | 2475 | 2679 | 41116 |
| Dec | 2883 | 2475 | 2679 | 45818 |
| Year | 2984 | 2374 | 2679 | 3,819150 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 92% | 90% | 4.7 | 11:57 |
| Feb | 91% | 86% | 5.1 | 12:01 |
| Mar | 90% | 83% | 5.5 | 12:05 |
| Apr | 91% | 82% | 5.5 | 12:11 |
| May | 91% | 83% | 5.2 | 12:16 |
| Jun | 90% | 84% | 5.1 | 12:18 |
| Jul | 90% | 84% | 5.1 | 12:17 |
| Aug | 89% | 84% | 5.2 | 12:13 |
| Sep | 90% | 88% | 5.1 | 12:08 |
| Oct | 91% | 90% | 4.9 | 12:02 |
| Nov | 92% | 91% | 4.9 | 11:58 |
| Dec | 92% | 91% | 4.7 | 11:56 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Bintulu is like
The warmest month is May, with an average high of 29 °C84 °F and a low of 25 °C76 °F. The coldest is February, when highs average 28 °C83 °F and lows 23 °C74 °F. Temperatures barely change through the year: the warmest and the coolest month differ by only 1.1 °C2 °F.
It is very wet, receiving about 3,819 mm150 in of precipitation per year. The wettest three-month stretch is November–January, which brings 36% of the annual total. The wettest month is January (491 mm19 in), the driest is May (238 mm9.4 in).
Relative humidity ranges from 89% in August to 92% in December. The clearest skies (lowest average cloud amount, 82%) are typical of April. Average wind speed near the ground ranges from 1 km/h (1 mph) in January to 1 km/h (1 mph) in August.
Best time to visit Bintulu
No month comes close to our comfort ideal here. The least demanding months are May, June and July (average highs 29 °C84 °F, 29 °C84 °F and 29 °C84 °F).
The most challenging month is January, which is very wet (491 mm19 in) and humid (92% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Bintulu
- Wetter months (October–January) — highs 2883 to 29 °C84 °F, lows 2374 to 24 °C75 °F, about 425 mm17 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (February–September) — highs 2883 to 29 °C84 °F, lows 2374 to 25 °C76 °F, about 265 mm10 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
How Bintulu compares
Compared with Sibu, about 166 km to the southwest, Bintulu has practically the same average temperature and receives a similar amount of precipitation.
Of the 32 places in Malaysia covered by World Climates, Bintulu is the 31st warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Malaysia climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Rantauprapat (Indonesia, Af), Timika (Indonesia, Af) and Subulussalam (Indonesia, Af).
Nearby places
- Sibu 166 km · 26 °C79 °F · 3,687 mm145 in
- Miri 173 km · 28 °C82 °F · 2,891 mm114 in
- Bandar Seri Begawan 285 km · 27 °C81 °F · 2,989 mm118 in
- Kuching 350 km · 27 °C80 °F · 3,803 mm150 in
- Kota Kinabalu 459 km · 28 °C82 °F · 2,716 mm107 in
- Tarakan 506 km · 28 °C82 °F · 2,897 mm114 in
- Singkawang 515 km · 27 °C81 °F · 2,942 mm116 in
- Pontianak 544 km · 26 °C79 °F · 3,311 mm130 in
Frequently asked questions
What is the warmest month in Bintulu?
May is the warmest month in Bintulu, with an average high of 29 °C (84 °F) and an average low of 25 °C (76 °F).
What is the coldest month in Bintulu?
February is the coldest month, with an average high of 28 °C (83 °F) and an average low of 23 °C (74 °F).
When does it rain the most in Bintulu?
January is the wettest month with about 491 mm (19.3 in) of precipitation; May is the driest with about 238 mm (9.4 in).
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.