Sibu climate

Name: Sibu
Address: MY

Sibu is warmest in May, with average highs of 30 °C, and coldest in January, when nights average 23 °C. December is the wettest month (351 mm) and July the driest (179 mm). Figures are 1991–2020 climate normals.

Across a full year Sibu averages 2,994 mm of rain and 364 days above 25 °C.

Malaysia · population 198,239 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month May 30 °C
Coldest month January 23 °C
Driest month July 179 mm
Wettest month December 351 mm
Least cloud July 83 % cloud
Hottest on record August 35 °C
Coldest on record January 20 °C

What to expectSibu through the year

Sibu changes little through the year. Average daily highs stay between 29 and 30 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 364 days a year reach 25 °C, 192 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in August.

Rain is spread fairly evenly through the year, from 179 mm in July to 351 mm in December. There is no dry season to aim for.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.2 °C	323 mm	93 %
February	29.5 °C	247 mm	92 %
March	30.2 °C	236 mm	90 %
April	30.4 °C	236 mm	88 %
May	30.5 °C	219 mm	86 %
June	30.3 °C	183 mm	83 %
July	30.3 °C	179 mm	83 %
August	30.4 °C	191 mm	85 %
September	30.2 °C	242 mm	89 %
October	29.8 °C	279 mm	92 %
November	29.4 °C	308 mm	94 %
December	29.1 °C	351 mm	94 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.2 °C	22.9 °C	25.2 °C	33.5 °C	19.6 °C	30	10
February	29.5 °C	23.0 °C	25.5 °C	32.7 °C	19.6 °C	28	12
March	30.2 °C	23.3 °C	25.9 °C	33.3 °C	20.8 °C	31	19
April	30.4 °C	23.7 °C	26.2 °C	33.0 °C	22.1 °C	30	20
May	30.5 °C	24.0 °C	26.5 °C	33.7 °C	21.9 °C	31	21
June	30.3 °C	23.7 °C	26.4 °C	33.7 °C	21.9 °C	30	19
July	30.3 °C	23.5 °C	26.3 °C	34.6 °C	21.1 °C	31	19
August	30.4 °C	23.5 °C	26.3 °C	35.1 °C	21.3 °C	31	20
September	30.2 °C	23.4 °C	26.1 °C	33.7 °C	21.9 °C	30	18
October	29.8 °C	23.3 °C	25.7 °C	33.5 °C	21.8 °C	31	15
November	29.4 °C	23.2 °C	25.5 °C	32.4 °C	21.6 °C	30	11
December	29.1 °C	23.1 °C	25.3 °C	32.2 °C	20.4 °C	31	9

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	323 mm	28	12 h/day	93 %	91 %	8.6 km/h
February	247 mm	24	12 h/day	92 %	89 %	8.8 km/h
March	236 mm	27	12 h/day	90 %	90 %	7.9 km/h
April	236 mm	27	12 h/day	88 %	91 %	7.2 km/h
May	219 mm	26	12 h/day	86 %	91 %	7.1 km/h
June	183 mm	22	12 h/day	83 %	90 %	7.3 km/h
July	179 mm	21	12 h/day	83 %	89 %	7.6 km/h
August	191 mm	22	12 h/day	85 %	89 %	7.8 km/h
September	242 mm	25	12 h/day	89 %	90 %	7.7 km/h
October	279 mm	28	12 h/day	92 %	91 %	8.0 km/h
November	308 mm	28	12 h/day	94 %	92 %	8.0 km/h
December	351 mm	29	12 h/day	94 %	92 %	8.4 km/h

How Sibu compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Sibu	30 °C	23 °C	2,994 mm	364
Bintulu · Malaysia	31 °C	23 °C	3,355 mm	364
Kuching · Malaysia	31 °C	23 °C	3,507 mm	364
Miri · Malaysia	30 °C	24 °C	2,631 mm	365
Singkawang · Indonesia	30 °C	24 °C	2,901 mm	365
Pontianak · Indonesia	31 °C	23 °C	2,876 mm	365
Bandar Seri Begawan · Brunei	30 °C	24 °C	2,363 mm	365

Planning a trip? See the best time to visit Sibu.

QuestionsCommon questions about Sibu’s climate

When is the best time to visit Sibu?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, May is the warmest month and July the driest. The month-by-month table above has the full picture.

How hot does Sibu get?

In May, the warmest month, daily highs average 30 °C. About 192 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 23 °C in January, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Sibu?

December, averaging 351 mm over 29 days with rain. The driest month is July with 179 mm. The year as a whole averages 2,994 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Sibu rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 2.300°, 111.817° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.