Sibu climate
Sibu (Malaysia) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 26 °C79 °F, and about 3,687 mm145 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Sibu climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2883 | 2374 | 2678 | 48919 |
| Feb | 2883 | 2373 | 2678 | 35114 |
| Mar | 2984 | 2374 | 2679 | 31412 |
| Apr | 2984 | 2475 | 2680 | 28611 |
| May | 2984 | 2476 | 2780 | 2379.3 |
| Jun | 2984 | 2475 | 2679 | 2248.8 |
| Jul | 2984 | 2374 | 2679 | 2028.0 |
| Aug | 2984 | 2374 | 2679 | 2429.5 |
| Sep | 2984 | 2374 | 2679 | 2429.5 |
| Oct | 2983 | 2374 | 2679 | 28211 |
| Nov | 2883 | 2374 | 2679 | 38815 |
| Dec | 2883 | 2374 | 2678 | 42917 |
| Year | 2984 | 2373 | 2679 | 3,687145 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 93% | 92% | 4.2 | 11:00 |
| Feb | 92% | 89% | 4.6 | 12:03 |
| Mar | 92% | 85% | 5.1 | 12:06 |
| Apr | 92% | 82% | 5.2 | 12:10 |
| May | 92% | 81% | 4.9 | 12:13 |
| Jun | 92% | 82% | 4.8 | 12:15 |
| Jul | 92% | 83% | 4.9 | 12:14 |
| Aug | 91% | 84% | 4.9 | 12:11 |
| Sep | 92% | 89% | 4.6 | 12:07 |
| Oct | 93% | 90% | 4.5 | 12:04 |
| Nov | 93% | 91% | 4.5 | 12:01 |
| Dec | 94% | 93% | 4.3 | 11:59 |
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 Sibu is like
The warmest month is May, with an average high of 29 °C84 °F and a low of 24 °C76 °F. The coldest is February, when highs average 28 °C83 °F and lows 23 °C73 °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 3,687 mm145 in of precipitation per year. The wettest three-month stretch is November–January, which brings 35% of the annual total. The wettest month is January (489 mm19 in), the driest is July (202 mm8.0 in).
Relative humidity ranges from 91% in August to 94% in December. The clearest skies (lowest average cloud amount, 81%) are typical of May. Average wind speed near the ground ranges from 0 km/h (0 mph) in January to 1 km/h (0 mph) in May.
Best time to visit Sibu
No month comes close to our comfort ideal here. The least demanding months are June, July and September (average highs 29 °C84 °F, 29 °C84 °F and 29 °C84 °F).
The most challenging month is January, which is very wet (489 mm19 in) and humid (93% 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 Sibu
- Wetter months (November–March) — highs 2883 to 29 °C84 °F, lows around 23 °C73 °F, about 394 mm16 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 (April–October) — highs around 29 °C83 °F, lows 2374 to 24 °C76 °F, about 245 mm9.7 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 Sibu compares
Compared with Kuching, about 185 km to the southwest, Sibu is on average 0.9 °C1.5 °F cooler and receives a similar amount of precipitation. The difference is largest in May (1 °C1.8 °F cooler).
Of the 32 places in Malaysia covered by World Climates, Sibu is the 32nd warmest by annual mean temperature and the 3rd 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 Pekanbaru (Indonesia, Af).
Nearby places
- Bintulu 166 km · 26 °C79 °F · 3,819 mm150 in
- Kuching 185 km · 27 °C80 °F · 3,803 mm150 in
- Miri 336 km · 28 °C82 °F · 2,891 mm114 in
- Singkawang 351 km · 27 °C81 °F · 2,942 mm116 in
- Pontianak 379 km · 26 °C79 °F · 3,311 mm130 in
- Bandar Seri Begawan 451 km · 27 °C81 °F · 2,989 mm118 in
- Sampit 552 km · 27 °C81 °F · 2,662 mm105 in
- Palangkaraya 553 km · 26 °C79 °F · 2,850 mm112 in
Frequently asked questions
What is the warmest month in Sibu?
May is the warmest month in Sibu, with an average high of 29 °C (84 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Sibu?
February is the coldest month, with an average high of 28 °C (83 °F) and an average low of 23 °C (73 °F).
When does it rain the most in Sibu?
January is the wettest month with about 489 mm (19.2 in) of precipitation; July is the driest with about 202 mm (8.0 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.